diff --git a/Start_RQC.sh b/Start_RQC.sh
index 32d3fa6aa29af0e42d9696c05de51b67d3e50ee7..0682d5d4c36c6644c34782f1adaba01028d25caa 100755
--- a/Start_RQC.sh
+++ b/Start_RQC.sh
@@ -1,14 +1,15 @@
 #!/bin/bash
 
-rqc_version="v.2022.11"
+snakemake_base_version="v.2023.02"
+rqc_version="v.2023.03"
 ###I###R###D######U###2###3###3#######T###R###A###N###S###V###I###H###M###I####
 # Name ___________________ Start_RQC.sh
-# Version ________________ v.2022.11
+# Version ________________ v.2023.03
 # Author _________________ Nicolas Fernandez
 # Affiliation ____________ IRD_U233_TransVIHMI
 # Aim ____________________ Bash script running quality_control.smk snakefile
 # Date ___________________ 2021.10.12
-# Latest modifications ___ 2022.11.18
+# Latest modifications ___ 2023.03.01
 # Use ____________________ bash Start_RQC.sh
 
 ###############################################################################
@@ -32,7 +33,7 @@ ${blue}Author${nc} _________________ Nicolas Fernandez
 ${blue}Affiliation${nc} ____________ IRD_U233_TransVIHMI
 ${blue}Aim${nc} ____________________ Bash script for ${red}R${nc}eads ${red}Q${nc}quality ${red}C${nc}ontrol
 ${blue}Date${nc} ___________________ 2021.10.12
-${blue}Latest modifications${nc} ___ 2022.11.18
+${blue}Latest modifications${nc} ___ 2023.03.01
 ${blue}Run${nc} ____________________ bash Start_RQC.sh
 "
 
@@ -106,22 +107,29 @@ ${green}#####${nc} ${red}SETTINGS${nc} ${green}#####${nc}
 ${green}--------------------${nc}
 "
 
-workdir=$(cd "$(dirname "${BASH_SOURCE[0]}" )" && pwd)                                        # Get working directory
-fastq=$(expr $(ls -l ${workdir}/resources/reads/*.fastq.gz | wc -l))                          # Get fastq.gz files count
-samples=$(expr ${fastq} \/ 2)                                                                 # {fastq.gz count} / 2 = samples count (paired-end)
-conda_version=$(conda --version | sed "s/conda //")                                           # Get conda version
-snakemake_version=$(grep -o -E "snakemake_version: '.+'" ${workdir}/config/config.yaml | \
-		    sed "s/snakemake_version: //" | sed "s/'//g")                             # Get snakemake version
-conda_frontend=$(grep -o -E "conda_frontend: '.+'"  ${workdir}/config/config.yaml | \
-		 sed "s/conda_frontend: //" | sed "s/'//g")                                   # Get conda frontend
-max_threads=$(grep -o -E "cpus: [0-9]+" ${workdir}/config/config.yaml | sed "s/cpus: //")     # Get user config for max threads
-max_memory=$(grep -o -E "ram: [0-9]+" ${workdir}/config/config.yaml | sed "s/ram: //")        # Get user config for max memory
-memory_per_job=$(expr ${max_memory} \/ ${max_threads})                                        # Calcul maximum memory usage per job
-mapper=$(grep -o -E "mapper: '.+'" ${workdir}/config/config.yaml | \
-	 sed "s/mapper: //" | sed "s/'//g")                                                   # Get user config mapper
-subset=$(grep -o -E "subset: [0-9]+" ${workdir}/config/config.yaml | sed "s/subset: //")      # Get user config subset
-time_stamp_start=$(date +"%Y-%m-%d %H:%M")                                                    # Get analyzes starting time
-SECONDS=0                                                                                     # Initialize SECONDS counter
+workdir=$(cd "$(dirname "${BASH_SOURCE[0]}" )" && pwd)                           # Get working directory
+config_file="${workdir}/configuration/config.yaml"                               # Get configuration file
+fastq=$(expr $(ls -l ${workdir}/resources/reads/*.fastq.gz | wc -l))             # Get fastq.gz files count
+
+if [[ "${fastq}" == "0" ]]                                                       # Start GeVarLi with at least 1 sample                                                              
+then
+    echo -e "${red}¡${nc} No fastq file detected in ${ylo}resources/reads/${nc} ${red}!${nc}                                                                                         
+${red}SARS-CoV-2${nc} ${ylo}resources/data_test/${nc} fastq will be used as sample example                                                                                           
+"
+    cp ${workdir}/resources/data_test/*.fastq.gz ${workdir}/resources/reads/     # use data_test/*.fastq.gz                                                                          
+fi
+
+samples=$(expr ${fastq} \/ 2)                                                    # {fastq.gz count} / 2 = samples count (paired-end)                                                 
+conda_version=$(conda --version | sed "s/conda //")                              # Get conda version                                                                                 
+snakemake_version=$(grep -o -E "snakemake_version: '.+'" ${config_file} | sed "s/snakemake_version: //" | sed "s/'//g") # Get snakemake version                                      
+conda_frontend=$(grep -o -E "frontend: '.+'"  ${config_file} | sed "s/frontend: //" | sed "s/'//g")                     # Get conda frontend                                         
+max_threads=$(grep -o -E "cpus: [0-9]+" ${config_file} | sed "s/cpus: //")       # Get user config for max threads                                                                   
+max_memory=$(grep -o -E "ram: [0-9]+" ${config_file} | sed "s/ram: //")          # Get user config for max memory                                                                    
+memory_per_job=$(expr ${max_memory} \/ ${max_threads})                           # Calcul maximum memory usage per job                                                               
+aligner=$(grep -o -E "aligner: '.+'" ${config_file} | sed "s/aligner: //" | sed "s/'//g")       # Get user config aligner                                                            
+time_stamp_start=$(date +"%Y-%m-%d %H:%M")                                       # Get analyzes starting time                                                                        
+time_stamp_archive=$(date +"%Y-%m-%d_%Hh%M")                                     # Get analyzes time to archive (wo space)                                                           
+SECONDS=0                                                                        # Initialize SECONDS counter                                                                        
 
 # Print some analyzes settings
 echo -e "
@@ -136,38 +144,41 @@ ${blue}max Threads${nc} ____________ ${red}${max_threads}${nc} of ${ylo}${logica
 ${blue}max Memory${nc} _____________ ${red}${max_memory}${nc} of ${ylo}${ram_gb}${nc} Gb available
 ${blue}job Memory${nc} _____________ ${red}${memory_per_job}${nc} Gb per job
 
-${blue}Mapper${nc} _________________ ${ylo}${mapper}${nc}
-${blue}Subet${nc} __________________ ${ylo}${subset}${nc} reads
+${blue}Aligner${nc} ________________ ${ylo}${aligner}${nc}
 
 ${blue}Start time${nc} _____________ ${time_stamp_start}
 "
 
 ###############################################################################
-###### RQC Base Conda Environment Installation ######
+###### Snakemake Installation ######
 echo -e "
 ${green}------------------------------------------------------------------------${nc}
-${green}#####${nc} ${red}RQC-BASE CONDA ENVIRONMENT INSTALLATION${nc} ${green}#####${nc}
-${green}---------------------------------------------------${nc}
+${green}#####${nc} ${red}SNAKEMAKE-BASE INSTALLATION${nc} ${green}#####${nc}
+${green}---------------------------------------${nc}
 "
 
-# Test if 'rqc-base' environment exist
-if [[ $(conda info --envs | grep -o -E "^rqc-base_${rqc_version}") ]]
+# Test if latest 'snakemake-base' environment exist                                                                                                                                  
+if [[ $(conda info --envs | grep -o -E "^snakemake-base_${snakemake_base_version}") ]]
 then
-    echo -e "
-Conda environment ${ylo}rqc-base_${rqc_version}${nc} it's already created
+    echo -e "                                                                                                                                                                        
+Conda environment ${ylo}snakemake-base_${snakemake_base_version}${nc} it's already created!                                                                                          
 "
 else
-    echo -e "
-Conda environment ${ylo}rqc-base_${rqc_version}${nc} will be now created
+    echo -e "                                                                                                                                                                        
+Conda environment ${red}snakemake-base${nc} ${ylo}${snakemake_base_version}${nc} will be now created, with:
+
+# ${red}Mamba${nc}     ver. ${ylo}1.0.0${nc}  (to create snakemake-conda's environments faster)
+# ${red}Snakemake${nc} ver. ${ylo}7.18.1${nc} (to run GeVarLi)
+# ${red}Rename${nc}    ver. ${ylo}1.601${nc}  (to rename fastq files)
+# ${red}Graphviz${nc}  ver. ${ylo}6.0.1${nc}  (to dot snakemake DAG)
 "
-   # Create a 'rqc-base' environment, with :
-    # Mamba     ver. 1.0.0  (to create snakemake-conda's environments faster)
-    # Snakemake ver. 7.18.1 (to run RQC)
-    # Rename    ver. 1.601  (to rename fastq files)
-    # Graphviz  ver. 6.0.1  (to dot snakemake DAG)
-    conda env create -f ${workdir}/workflow/envs/${os}/rqc-base_${rqc_version}.yaml
+    conda env create -f ${workdir}/workflow/environments/${os}/snakemake-base_${snakemake_base_version}.yaml
 fi
 
+# Remove old 'gevarli-base' environment
+conda env remove --name rqc-base_v.2022.11
+
+
 ###############################################################################
 ###### Conda Env. Activation ######
 echo -e "
@@ -176,10 +187,12 @@ ${green}#####${nc} ${red}CONDA ACTIVATION${nc} ${green}#####${nc}
 ${green}----------------------------${nc}
 "
 
+echo -e "conda activate ${red}snakemake-base${nc} ${ylo}${snakemake_base_version}${nc}"
+
 # intern shell source conda
 source ~/miniconda3/etc/profile.d/conda.sh 2> /dev/null          # local user
 source /usr/local/miniconda3/etc/profile.d/conda.sh 2> /dev/null # HPC server
-conda activate rqc-base_${rqc_version}
+conda activate snakemake-base_${snakemake_base_version}
 
 ###############################################################################
 ###### Rename samples ######
@@ -189,12 +202,18 @@ ${green}#####${nc} ${red}RENAME FASTQ FILES${nc} ${green}#####${nc}
 ${green}------------------------------${nc}
 "
 
-# Rename fastq files to remove "_001" Illumina pattern.
-## De/comment (#) if you want keep Illumina barcode-ID and/or Illumina line-ID
-#rename "s/_S\d+_/_/" ${workdir}/resources/reads/*.fastq.gz 2> /dev/null                # Remove barcode-ID like {_S001_}
-#rename "s/_L\d+_/_/" ${workdir}/resources/reads/*.fastq.gz 2> /dev/null                # Remove line-ID ID like {_L001_}
+# Rename fastq files to remove "_001" Illumina pattern (mandatory)
+## De/comment line (#) if you want keep Illumina barcode-ID and/or Illumina line-ID
+echo -e "Removing ${red}'_S'${nc} index tag ID"
+rename "s/_S\d+_/_/" ${workdir}/resources/reads/*.fastq.gz 2> /dev/null                # Remove barcode-ID like {_S001_}
+echo -e "Removing ${red}'_L'${nc} line tag ID"
+rename "s/_L\d+_/_/" ${workdir}/resources/reads/*.fastq.gz 2> /dev/null                # Remove line-ID ID like {_L001_}
+echo -e "Removing ${red}'_001'${nc} illumina tag ID"
 rename "s/_001.fastq.gz/.fastq.gz/" ${workdir}/resources/reads/*.fastq.gz 2> /dev/null # Remove end-name ID like {_001}.fastq.gz
 
+echo -e "
+If you want to keep Illumina ${blue}barcode-ID${nc} and/or Illumina ${blue}line-ID${nc}, please edit ${ylo}Start_GeVarLi.sh${nc} script (l.199).
+"
 
 ###############################################################################
 ###### Call snakemake pipelines ######
@@ -220,7 +239,7 @@ for snakefile in ${snakefile_list} ; do
     echo -e "${blue}-- ${snakefile} --${nc}" ;
     snakemake \
 	--directory ${workdir}/ \
-        --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+        --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
         --config os=${os} \
         --rerun-incomplete \
         --unlock ;
@@ -241,7 +260,7 @@ for snakefile in ${snakefile_list} ; do
     echo -e "${blue}-- ${snakefile} --${nc}" ;
     snakemake \
         --directory ${workdir}/ \
-        --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+        --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
         --cores ${max_threads} \
         --config os=${os} \
         --rerun-incomplete \
@@ -266,7 +285,7 @@ for snakefile in ${snakefile_list} ; do
     echo -e "${blue}-- ${snakefile} --${nc}" ;
     snakemake \
         --directory ${workdir}/ \
-        --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+        --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
         --cores ${max_threads} \
         --config os=${os} \
         --rerun-incomplete \
@@ -295,7 +314,7 @@ for snakefile in ${snakefile_list} ; do
     echo -e "${blue}-- ${snakefile} --${nc}" ;
     snakemake \
         --directory ${workdir}/ \
-        --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+        --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
         --cores ${max_threads}\
         --config os=${os} \
         --rerun-incomplete \
@@ -326,7 +345,7 @@ for snakefile in ${snakefile_list} ; do
     echo -e "${blue}-- ${snakefile} --${nc}" ;
     snakemake \
         --directory ${workdir}/ \
-        --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+        --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
         --cores ${max_threads} \
         --max-threads ${max_threads} \
         --config os=${os} \
@@ -362,7 +381,7 @@ for snakefile in ${snakefile_list} ; do
 	for extention in ${extention_list} ; do
 	    snakemake \
 		--directory ${workdir}/ \
-                --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+                --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
                 --${graph} \
 	    | dot -T${extention} \
             2> /dev/null \
@@ -374,7 +393,7 @@ done
 for snakefile in ${snakefile_list} ; do
     snakemake \
         --directory ${workdir} \
-        --snakefile ${workdir}/workflow/rules/${snakefile}.smk \
+        --snakefile ${workdir}/workflow/snakefiles/${snakefile}.smk \
         --summary > ${workdir}/results/10_Reports/files-summaries/${snakefile}_files-summary.txt \
     2> /dev/null ;
 done
@@ -420,7 +439,7 @@ Author _________________ Nicolas Fernandez
 Affiliation ____________ IRD_U233_TransVIHMI
 Aim ____________________ Bash script for RQC
 Date ___________________ 2021.10.12
-Latest modifications ___ 2022.11.18
+Latest modifications ___ 2023.03.01
 Run ____________________ bash Start_RQC.sh
 
 Operating System _______ ${os}
@@ -456,8 +475,9 @@ cd ${workdir}/results/
 tar -zcf 10_Reports_archive.tar.gz 10_Reports
 
 # Gzip results directory
+mkdir -p ${workdir}/archives/ 2> /dev/null
 cd ${workdir}/
-tar -zcf Results_${time_stamp_archive}_${reference}_${aligner}-${min_cov}X_${samples}sp_archive.tar.gz results
+tar -zcf archives/Results_${time_stamp_archive}_${samples}sp_archive.tar.gz results/
 
 echo -e "
 ${green}------------------------------------------------------------------------${nc}
diff --git a/config/config.yaml b/configuration/config.yaml
similarity index 59%
rename from config/config.yaml
rename to configuration/config.yaml
index 3b57aeb3e5d9648c0221ec08c721d791f4e0305f..706fa49849760dab4281bf92dccca83641fca03d 100644
--- a/config/config.yaml
+++ b/configuration/config.yaml
@@ -1,12 +1,12 @@
 ---
 ###I###R###D######U###2###3###3#######T###R###A###N###S###V###I###H###M###I####
 # Name ___________________ config.yaml
-# Version ________________ v.2022.11
+# Version ________________ v.2023.03
 # Author _________________ Nicolas Fernandez
 # Affiliation ____________ IRD_U233_TransVIHMI
 # Aim ____________________ Configuration yaml file for quality_control.smk snakefile
 # Date ___________________ 2021.10.12
-# Latest modifications ___ 2022.11.18
+# Latest modifications ___ 2023.03.01
 # Use ____________________ Edit default settings
 
 ###############################################################################
@@ -21,41 +21,15 @@ resources:
     ## '.'        # Local (i.e. GeVarLi root directory)
     ## '/scratch' # HPC (set it to match your HPC usage)
 
-conda_frontend: 'mamba' # Conda frontend (conda or mamba)
-
-# conda_version:     '22.9.0' # Conda version (upgrade from "4.12.0")
-# mamba_version:     '1.0.0'  # Mamba version (faster than conda)
-# snakemake_version: '7.18.1' # Snakemake version (upgrade from  "6.12.3")
-# rename_version:    '1.601'  # Rename version (to rename fastq files)
-# graphviz_version:  '6.0.1'  # GraphViz version (to do dot snakemake DAG)
-
-
-### ENVIRONNEMENTS -----------------------------------------------------------------------------------
-conda:
-  osx:                                                     # Conda OSX environement yaml files:
-    bowtie2:      '../envs/osx/bowtie2_v.2.4.5.yaml'         # Bowtie2      ver. 2.4.5
-    bwa:          '../envs/osx/bwa_v.0.7.17.yaml'            # BWA          ver. 0.7.17
-    fastq-screen: '../envs/osx/fastq-screen_v.0.15.2.yaml'   # Fastq-Screen ver. 0.15.2
-    fastqc:       '../envs/osx/fastqc_v.0.11.9.yaml'         # FastQC       ver. 0.11.9
-    rqc-base:     '../envs/osx/rqc-base_v.2022.11'           # RQC-Base     ver. 2022.11
-    multiqc:      '../envs/osx/multiqc_v.1.12.yaml'          # MultiQC      ver. 1.12
-  linux:                                                   # Conda Linux environement yaml files:
-    bowtie2:      '../envs/linux/bowtie2_v.2.4.5.yaml'       # Bowtie2      ver. 2.4.5
-    bwa:          '../envs/linux/bwa_v.0.7.17.yaml'          # BWA          ver. 0.7.17
-    fastq-screen: '../envs/linux/fastq-screen_v.0.15.2.yaml' # Fastq-Screen ver. 0.15.2
-    fastqc:       '../envs/linux/fastqc_v.0.11.9.yaml'       # FastQC       ver. 0.11.9
-    rqc-base:     '../envs/linux/rqc-base_v.2022.11'         # RQC-Base     ver. 2022.11
-    multiqc:      '../envs/linux/multiqc_v.1.12.yaml'        # MultiQC      ver. 1.12
-
 ### FASTQSCREEN --------------------------------------------------------------------------------------
 fastq-screen:
-  config: 'config/fastq-screen_bwa.conf' # Path to the fastq-screen configuration file
+  config: 'configuration/fastq-screen_bwa.conf' # Path to the fastq-screen configuration file
   # Available options:
-    #- 'config/fastq-screen_bwa.conf'     # Default fastq-screen configuration file for bwa users
-    #- 'config/fastq-screen_bowtie2.conf' # Default fastq-screen configuration file for bowtie2 users
-    #- 'config/fastq-screen_custom.conf'  # Your cutom fastq-screen configuration file
+    #- 'configuration/fastq-screen_bwa.conf'     # Default fastq-screen configuration file for bwa users
+    #- 'configuration/fastq-screen_bowtie2.conf' # Default fastq-screen configuration file for bowtie2 users
+    #- 'configuration/fastq-screen_custom.conf'  # Your cutom fastq-screen configuration file
   subset: 10000                      # Don't use whole sequences, but a subset reads (default: "1000") [INT] (0=all)
-  mapper: 'bwa'                      # Mapper used by fastq-screen for alignments (default "bwa")
+  aligner: 'bwa'                      # Mapper used by fastq-screen for alignments (default "bwa")
   # Available options:
     #- 'bwa'     # Burrows-Wheeler Aligner (default, somme small genomes indexes provided, see "fastq-screen_bwa.conf")
     #- 'bowtie2' # Bowtie2                 (somme small genomes indexes provided, see "fastq-screen_bowtie2.conf")
@@ -84,6 +58,36 @@ bowtie2:
     #- ''              # (default)
     #- '--large-index' # Force generated index to be "large", even if reference has fewer than 4 billion nucleotides
 
+### ENVIRONNEMENTS -----------------------------------------------------------------------------------
+
+# conda_version:     '22.9.0' # Conda version (upgrade from "4.12.0")
+# mamba_version:     '1.0.0'  # Mamba version (faster than conda)
+# snakemake_version: '7.18.1' # Snakemake version (upgrade from  "6.12.3")
+# rename_version:    '1.601'  # Rename version (to rename fastq files)
+# graphviz_version:  '6.0.1'  # GraphViz version (to do dot snakemake DAG)
+
+conda:
+  frontend: 'mamba' # Conda frontend (conda or mamba)
+  # Available options:                                                                                                                                                               
+    #- 'mamba' # mamba (default)                                                                                                                                                     
+    #- 'conda' # conda                                                                                                                                                               
+  osx: # Conda OSX environement yaml files:
+    snakemake-base: '../environments/osx/snakemake-base_v.2023.02.yaml' # Snakemake-Base ver. 2023.02
+    #rqc-tools:      '../environments/osx/rqc-tools_v.2023.03'           # RQC-Tools      ver. 2023.03
+    bowtie2:        '../environments/osx/bowtie2_v.2.4.5.yaml'          # Bowtie2        ver. 2.4.5
+    bwa:            '../environments/osx/bwa_v.0.7.17.yaml'             # BWA            ver. 0.7.17
+    fastq-screen:   '../environments/osx/fastq-screen_v.0.15.2.yaml'    # Fastq-Screen   ver. 0.15.2
+    fastqc:         '../environments/osx/fastqc_v.0.11.9.yaml'          # FastQC         ver. 0.11.9
+    multiqc:        '../environments/osx/multiqc_v.1.12.yaml'           # MultiQC        ver. 1.12
+  linux: # Conda Linux environement yaml files:
+    snakemake-base: '../environments/linux/snakemake-base_v.2023.02.yaml' # Snakemake-Base ver. 2023.02
+    #rqc-tools:      '../environments/linux/rqc-tools_v.2023.03'           # RQC-Tools      ver. 2023.03
+    bowtie2:        '../environments/linux/bowtie2_v.2.4.5.yaml'          # Bowtie2        ver. 2.4.5
+    bwa:            '../environments/linux/bwa_v.0.7.17.yaml'             # BWA            ver. 0.7.17
+    fastq-screen:   '../environments/linux/fastq-screen_v.0.15.2.yaml'    # Fastq-Screen   ver. 0.15.2
+    fastqc:         '../environments/linux/fastqc_v.0.11.9.yaml'          # FastQC         ver. 0.11.9
+    multiqc:        '../environments/linux/multiqc_v.1.12.yaml'           # MultiQC        ver. 1.12
+
 ### OPERATING-SYSTEM ---------------------------------------------------------------------------------
 os: 'osx' # Operating System (default: "osx")
 # Available options:
diff --git a/config/fastq-screen_bowtie2.conf b/configuration/fastq-screen_bowtie2.conf
similarity index 100%
rename from config/fastq-screen_bowtie2.conf
rename to configuration/fastq-screen_bowtie2.conf
diff --git a/config/fastq-screen_bwa.conf b/configuration/fastq-screen_bwa.conf
similarity index 78%
rename from config/fastq-screen_bwa.conf
rename to configuration/fastq-screen_bwa.conf
index ecdbcac5b97dc4738a3e954023ef5da275b1eaa1..05134f52c6a478d31176331b8f7038ecc3b84009 100644
--- a/config/fastq-screen_bwa.conf
+++ b/configuration/fastq-screen_bwa.conf
@@ -26,13 +26,13 @@ DATABASE	Vectors		resources/indexes/bwa/UniVec_wo_phiX_and_kanamycin
 #### Putative Hosts  (Large genomes) -----
 
 ### Gorilla g4
-#DATABASE	Gorilla		resources/indexes/bwa/Gorilla-gorilla_g4
+DATABASE	Gorilla		resources/indexes/bwa/Gorilla-gorilla_g4
 ### Chimpanzee t3
-#DATABASE	Chimpanzee	resources/indexes/bwa/Pan_troglodytes_t3
+DATABASE	Chimpanzee	resources/indexes/bwa/Pan_troglodytes_t3
 ### Human - Homo-sapiens_h38_NC-000001.11
-#DATABASE	Human		resources/indexes/bwa/Homo-sapiens_h38_NC000001-11
+DATABASE	Human		resources/indexes/bwa/Homo-sapiens_h38_NC000001-11
 ### Bat v1
-#DATABASE	Bat		resources/indexes/bwa/Pteropus-vampyrus_v1
+DATABASE	Bat		resources/indexes/bwa/Pteropus-vampyrus_v1
 
 #### Main Viruses (Small genomes) -----
 
@@ -52,18 +52,18 @@ DATABASE	HIV		resources/indexes/bwa/HIV-1_HXB2_K03455-1
 ### E. coli (Bacteria) - QC_Echerichia-coli_CP060121.1
 DATABASE	Ecoli		resources/indexes/bwa/Echerichia-coli_CP060121-1
 ### S. cerevisiae (Yeast) - sequence
-#DATABASE	Scerevisiae	resources/indexes/bwa/Saccharomyces-cerevisiae
+DATABASE	Scerevisiae	resources/indexes/bwa/Saccharomyces-cerevisiae
 ### C. elegans (Nematode) - sequence
-#DATABASE	Celegans	resources/indexes/bwa/Caenorhabditis-elegans
+DATABASE	Celegans	resources/indexes/bwa/Caenorhabditis-elegans
 ### D. melanogaster (Fruit fly) - sequence
-#DATABASE	Dmelanogaster	resources/indexes/bwa/Drosophila-melanogaster
+DATABASE	Dmelanogaster	resources/indexes/bwa/Drosophila-melanogaster
 ### D. rerio (Zebrafish) - sequence
-#DATABASE    	Drerio		resources/indexes/bwa/Danio-rerio
+DATABASE    	Drerio		resources/indexes/bwa/Danio-rerio
 ### X. laevis (Xenope) - sequence
-#DATABASE     	Xlaevis		resources/indexes/bwa/Xenopus-laevis
+DATABASE     	Xlaevis		resources/indexes/bwa/Xenopus-laevis
 ### G. gallus - sequence
-#DATABASE     	Ggallus		ressources/indexes/bwa/Gallus-gallus
+DATABASE     	Ggallus		ressources/indexes/bwa/Gallus-gallus
 ### Mouse m39
-#DATABASE	Mouse		resources/indexes/bwa/Mus-musculus_m39
+DATABASE	Mouse		resources/indexes/bwa/Mus-musculus_m39
 ### Arabidopsis t10 (Plant) - sequence from NCBI (ftp://ftp.ncbi.nlm.nih.gov/genomes/all/GCF/000/001/735/GCF_000001735.3_TAIR10/GCF_000001735.3_TAIR10_genomic.fna.gz)
-#DATABASE	Arabidopsis	resources/indexes/bwa/Arabidopsis-thaliana_t10_NC003070-9
+DATABASE	Arabidopsis	resources/indexes/bwa/Arabidopsis-thaliana_t10_NC003070-9
diff --git a/resources/data_test/.gitkeep b/resources/data_test/.gitkeep
new file mode 100644
index 0000000000000000000000000000000000000000..f13c79cb973f7529714edbaff5ce25450f3cf7ff
--- /dev/null
+++ b/resources/data_test/.gitkeep
@@ -0,0 +1 @@
+Git: keep this non empty file!
\ No newline at end of file
diff --git a/resources/data_test/SARS-CoV-2_Omicron-BA-1-1_Covid-Seq-Lib-on-MiSeq_250000-reads_R1.fastq.gz b/resources/data_test/SARS-CoV-2_Omicron-BA-1-1_Covid-Seq-Lib-on-MiSeq_250000-reads_R1.fastq.gz
new file mode 100644
index 0000000000000000000000000000000000000000..efda6523124e705811d70e9ee78e11f542bdd582
Binary files /dev/null and b/resources/data_test/SARS-CoV-2_Omicron-BA-1-1_Covid-Seq-Lib-on-MiSeq_250000-reads_R1.fastq.gz differ
diff --git a/resources/data_test/SARS-CoV-2_Omicron-BA-1-1_Covid-Seq-Lib-on-MiSeq_250000-reads_R2.fastq.gz b/resources/data_test/SARS-CoV-2_Omicron-BA-1-1_Covid-Seq-Lib-on-MiSeq_250000-reads_R2.fastq.gz
new file mode 100644
index 0000000000000000000000000000000000000000..852cc3f5735a9b9c2628b78f12b8e1f2719d7d6f
Binary files /dev/null and b/resources/data_test/SARS-CoV-2_Omicron-BA-1-1_Covid-Seq-Lib-on-MiSeq_250000-reads_R2.fastq.gz differ
diff --git a/workflow/envs/linux/bowtie2_v.2.4.5.yaml b/workflow/environments/linux/bowtie2_v.2.4.5.yaml
similarity index 100%
rename from workflow/envs/linux/bowtie2_v.2.4.5.yaml
rename to workflow/environments/linux/bowtie2_v.2.4.5.yaml
diff --git a/workflow/envs/linux/bwa_v.0.7.17.yaml b/workflow/environments/linux/bwa_v.0.7.17.yaml
similarity index 100%
rename from workflow/envs/linux/bwa_v.0.7.17.yaml
rename to workflow/environments/linux/bwa_v.0.7.17.yaml
diff --git a/workflow/envs/linux/fastq-screen_v.0.15.2.yaml b/workflow/environments/linux/fastq-screen_v.0.15.2.yaml
similarity index 100%
rename from workflow/envs/linux/fastq-screen_v.0.15.2.yaml
rename to workflow/environments/linux/fastq-screen_v.0.15.2.yaml
diff --git a/workflow/envs/linux/fastqc_v.0.11.9.yaml b/workflow/environments/linux/fastqc_v.0.11.9.yaml
similarity index 100%
rename from workflow/envs/linux/fastqc_v.0.11.9.yaml
rename to workflow/environments/linux/fastqc_v.0.11.9.yaml
diff --git a/workflow/envs/linux/multiqc_v.1.12.yaml b/workflow/environments/linux/multiqc_v.1.12.yaml
similarity index 100%
rename from workflow/envs/linux/multiqc_v.1.12.yaml
rename to workflow/environments/linux/multiqc_v.1.12.yaml
diff --git a/workflow/envs/linux/rqc-base_v.2022.11.yaml b/workflow/environments/linux/snakemake-base_v.2023.02.yaml
similarity index 99%
rename from workflow/envs/linux/rqc-base_v.2022.11.yaml
rename to workflow/environments/linux/snakemake-base_v.2023.02.yaml
index 4fa951d8536984a62a3dfc887099b1b0de18d22b..1fdbaa7f5f6bef1bc50ec3873c97ff980f8bcc96 100644
--- a/workflow/envs/linux/rqc-base_v.2022.11.yaml
+++ b/workflow/environments/linux/snakemake-base_v.2023.02.yaml
@@ -1,4 +1,4 @@
-name: rqc-base_v.2022.11
+name: snakemake-base_v.2023.02
 channels:
   - bioconda
   - conda-forge
diff --git a/workflow/envs/osx/bowtie2_v.2.4.5.yaml b/workflow/environments/osx/bowtie2_v.2.4.5.yaml
similarity index 100%
rename from workflow/envs/osx/bowtie2_v.2.4.5.yaml
rename to workflow/environments/osx/bowtie2_v.2.4.5.yaml
diff --git a/workflow/envs/osx/bwa_v.0.7.17.yaml b/workflow/environments/osx/bwa_v.0.7.17.yaml
similarity index 100%
rename from workflow/envs/osx/bwa_v.0.7.17.yaml
rename to workflow/environments/osx/bwa_v.0.7.17.yaml
diff --git a/workflow/envs/osx/fastq-screen_v.0.15.2.yaml b/workflow/environments/osx/fastq-screen_v.0.15.2.yaml
similarity index 100%
rename from workflow/envs/osx/fastq-screen_v.0.15.2.yaml
rename to workflow/environments/osx/fastq-screen_v.0.15.2.yaml
diff --git a/workflow/envs/osx/fastqc_v.0.11.9.yaml b/workflow/environments/osx/fastqc_v.0.11.9.yaml
similarity index 100%
rename from workflow/envs/osx/fastqc_v.0.11.9.yaml
rename to workflow/environments/osx/fastqc_v.0.11.9.yaml
diff --git a/workflow/envs/osx/multiqc_v.1.12.yaml b/workflow/environments/osx/multiqc_v.1.12.yaml
similarity index 100%
rename from workflow/envs/osx/multiqc_v.1.12.yaml
rename to workflow/environments/osx/multiqc_v.1.12.yaml
diff --git a/workflow/envs/osx/rqc-base_v.2022.11.yaml b/workflow/environments/osx/snakemake-base_v.2023.02.yaml
similarity index 99%
rename from workflow/envs/osx/rqc-base_v.2022.11.yaml
rename to workflow/environments/osx/snakemake-base_v.2023.02.yaml
index 876cff05f607863c51bf12cf4eef6f9695f84cae..fdb030f2764c252707b1b8a35c2dec6e2af21926 100644
--- a/workflow/envs/osx/rqc-base_v.2022.11.yaml
+++ b/workflow/environments/osx/snakemake-base_v.2023.02.yaml
@@ -1,4 +1,4 @@
-name: rqc-base_v.2022.11
+name: snakemake-base_v.2023.02
 channels:
   - bioconda
   - conda-forge
diff --git a/workflow/rules/indexing_genomes.smk b/workflow/snakefiles/indexing_genomes.smk
similarity index 98%
rename from workflow/rules/indexing_genomes.smk
rename to workflow/snakefiles/indexing_genomes.smk
index d496a05d5725846a2918c78e905a08337f34a263..33e428bdeb4dabd7fa733d1bb7fb60680b88a2e3 100755
--- a/workflow/rules/indexing_genomes.smk
+++ b/workflow/snakefiles/indexing_genomes.smk
@@ -4,13 +4,13 @@
 # Affiliation ____________ IRD_U233_TransVIHMI
 # Aim ____________________ Snakefile with indexing genomes rules
 # Date ___________________ 2022.09.28
-# Latest modifications ___ 2022.11.18
+# Latest modifications ___ 2023.03.01
 # Use ____________________ snakemake -s indexing_genomes.smk --use-conda 
 
 ###############################################################################
 ###### CONFIGURATION ######
 
-configfile: "config/config.yaml"
+configfile: "configuration/config.yaml"
 
 ###############################################################################
 ###### FUNCTIONS ######
diff --git a/workflow/rules/quality_control.smk b/workflow/snakefiles/quality_control.smk
similarity index 93%
rename from workflow/rules/quality_control.smk
rename to workflow/snakefiles/quality_control.smk
index f65e0cc26d9ee81d16868b880d2b586b95fdd294..91d283e2905037938b667d3b5d0091436c5eea11 100755
--- a/workflow/rules/quality_control.smk
+++ b/workflow/snakefiles/quality_control.smk
@@ -4,13 +4,13 @@
 # Affiliation ____________ IRD_U233_TransVIHMI
 # Aim ____________________ Snakefile with quality control rules
 # Date ___________________ 2021.09.28
-# Latest modifications ___ 2022.11.18
+# Latest modifications ___ 2023.03.01
 # Run ____________________ snakemake -s quality_control.smk --use-conda 
 
 ###############################################################################
 ###### CONFIGURATION ######
 
-configfile: "config/config.yaml"
+configfile: "configuration/config.yaml"
 
 ###############################################################################
 ###### FUNCTIONS ######
@@ -38,9 +38,9 @@ MULTIQC = config["conda"][OS]["multiqc"]          # MultiQC
 ###############################################################################
 ###### PARAMETERS ######
 
-CONFIG = config["fastq-screen"]["config"] # Fastq-screen --conf
-MAPPER = config["fastq-screen"]["mapper"] # Fastq-screen --aligner
-SUBSET = config["fastq-screen"]["subset"] # Fastq-screen --subset
+CONFIG = config["fastq-screen"]["config"]   # Fastq-screen --conf
+ALIGNER = config["fastq-screen"]["aligner"] # Fastq-screen --aligner
+SUBSET = config["fastq-screen"]["subset"]   # Fastq-screen --subset
 
 
 ###############################################################################
@@ -86,7 +86,7 @@ rule fastqscreen_contamination_checking:
         cpus = CPUS
     params:
         config = CONFIG,
-        mapper = MAPPER,
+        aligner = ALIGNER,
         subset = SUBSET
     input:
         fastq = "resources/reads/"
@@ -99,7 +99,7 @@ rule fastqscreen_contamination_checking:
         "-q "                            # --quiet: Only show log warning
         "--threads {resources.cpus} "    # --threads: Specifies across how many threads bowtie will be allowed to run
         "--conf {params.config} "        # path to configuration file
-        "--aligner {params.mapper}  "    # -a: choose aligner 'bowtie', 'bowtie2', 'bwa'
+        "--aligner {params.aligner}  "   # -a: choose aligner 'bowtie', 'bowtie2', 'bwa'
         "--subset {params.subset} "      # Don't use the whole sequence file, but create a subset of specified size
         "--outdir {output.fastqscreen} " # Output directory
         "{input.fastq}/*.fastq.gz "      # Input file.fastq