use shellckeck and other Hippolyte correction

vm-start.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/bash
 #
 
 #RESULT_POSSIBLE=("init","start","start_backup","create","backup","restore","suppr")
@@ -36,13 +36,14 @@ OPTION available
     options=<option>    additinal options to give to qemu. By default is
                         -display gtk -vga qxl
 "
-MAIN_LOCATION="$HOME/virtual_machine/"
+MAIN_LOCATION="$HOME/virtual_machine"
 OPTION="-display gtk \
-    -vga qxl"
+    -usbdevice tablet"
 
         # other options choices
         #
         #-display sdl
+        #-vga qxl
         #-usbdevice tablet \
 
 
@@ -54,12 +55,12 @@ HELP() {
 
 INIT() {
     echo "INIT for vm $1"
-    NAME=$1
+    NAME="$1"
     read -p "How many proccessor will you use ? " -r NPROC
     read -p "How much memory will you need ? " -r MEMORY
     read -p "Do you want to forward ssh port (y/n) " -r entry
 
-    if [[ $entry =~ ^[yY]$ ]]
+    if [[ "$entry" =~ ^[yY]$ ]]
     then
         FORWARD=",hostfwd=tcp::10022-:22" # forward VM 22 port to Host 10022 
     else
@@ -70,108 +71,102 @@ INIT() {
     cat << EOF > "conf/$NAME-vm_var.sh"
 NAME="$NAME"
 VMHOSTNAME="\$NAME-vm"
+VMDRIVE="\${VMHOSTNAME}.cow"
 NPROC="$NPROC"
 MEMORY="$MEMORY"
 FORWARD="$FORWARD"
-LOCATION="\$NAME-sandbox/"
+LOCATION="\$NAME-sandbox"
 EOF
-    chmod +x conf/$NAME-vm_var.sh
+    chmod +x "conf/$NAME-vm_var.sh"
+
+}
+
+start_the_vm() {
+    echo "${MAIN_LOCATION}/${LOCATION}/${VMDRIVE}"
+    echo "$OPTION"
+    qemu-system-x86_64 \
+        -enable-kvm \
+        -cpu host \
+        -smp "$NPROC" \
+        -net nic \
+        -net user"$FORWARD",hostname="$VMHOSTNAME" \
+        -m "$MEMORY" \
+        -drive file="${MAIN_LOCATION}/${LOCATION}/${VMDRIVE}" \
+        $OPTION
 
 }
 
 START() {
-    qemu-system-x86_64 \
+    start_the_vm
-        -enable-kvm \
-        -cpu host \
-        -smp $NPROC \
-        -net nic \
-        -net user$FORWARD,hostname=$VMHOSTNAME \
-        -m $MEMORY \
-        -drive file=${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow \
-        $OPTION \
-        -daemonize
 
 }
 
 START_BACKUP() {
-    qemu-system-x86_64 \
+    VMDRIVE="${VMDRIVE}.backup"
-        -enable-kvm \
+    start_the_vm
-        -cpu host \
-        -smp $NPROC \
-        -net nic \
-        -net user$FORWARD,hostname=$VMHOSTNAME \
-        -m $MEMORY \
-        -drive file=${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow.backup \
-        $OPTION \
-        -daemonize
 
 }
 
 CREATE() {
 
-    if [ -z ${SIZE+x} ] 
+    if [ -z "${SIZE+x}" ] 
     then
         SIZE="40G"
     fi
 
-    if [ ! -f "${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow" ]
+    if [ ! -f "${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow" ]
     then
-        echo "create directory ${MAIN_LOCATION}${LOCATION}"
+        echo "create directory ${MAIN_LOCATION}/${LOCATION}/"
-        mkdir -p ${MAIN_LOCATION}${LOCATION}
+        mkdir -p "${MAIN_LOCATION}/${LOCATION}/"
-        qemu-img create -f qcow2 ${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow $SIZE
+        qemu-img create -f qcow2 "${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow" "$SIZE"
     fi
 
     if [ "${UEFI}" == "set" ]
     then
         echo "create UEFIVAR"
-        if [ ! -f ${MAIN_LOCATION}${LOCATION}OVMF_VARS.4m.fd ]
+        if [ ! -f "${MAIN_LOCATION}/${LOCATION}/OVMF_VARS.4m.fd" ]
         then
-            cp /usr/share/edk2/x64/OVMF_VARS.4m.fd ${MAIN_LOCATION}${LOCATION}
+            cp /usr/share/edk2/x64/OVMF_VARS.4m.fd "${MAIN_LOCATION}/${LOCATION}"
         else
             echo "INFO, UEFIVAR already existing"
         fi
     fi
 
-
+    OPTION="$OPTION \
-    qemu-system-x86_64 \
-        -enable-kvm \
-        -cpu host \
-        -smp $NPROC \
-        -net nic \
-        -net user$FORWARD,hostname=$VMHOSTNAME \
-        -m $MEMORY \
-        -drive file=${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow \
         -boot d \
-        -drive file="$1",media=cdrom \
+        -drive file=$1,media=cdrom"
-        $OPTION
+
+    start_the_vm
+
+
 }
 
 RESTORE() {
     echo "Are you sure you want to restore the rescue? (y/N)"
     read -r entry
-    if [[ $entry =~ ^[yY]$ ]]
+    if [[ "$entry" =~ ^[yY]$ ]]
     then
-        cp -i ${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow.backup ${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow
+        cp -i "${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow.backup" "${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow"
         echo "Done"
     fi
 }
 
 
 BACKUP() {
-    # Should test if the folder ${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow exist or else it will arrive an error.
+    # Should test if the folder ${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow exist or else it will arrive an error.
     read -p "Are you sure you want to backup the volume? If you continue the previous backup will be lost (y/N) " -r entry
-    if [[ $entry =~ ^[yY]$ ]]
+    if [[ "$entry" =~ ^[yY]$ ]]
     then
-        cp -i ${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow ${MAIN_LOCATION}${LOCATION}${VMHOSTNAME}.cow.backup
+        cp -i "${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow" "${MAIN_LOCATION}/${LOCATION}/${VMHOSTNAME}.cow.backup"
         echo "Done"
     fi
 }
 
 SUPPRESS() {
     read -p "Are you sure you want to delete all data relative to the vm $1? (y/N)" -r entry
-    if [[ $entry =~ ^[yY]$ ]]
+    if [[ "$entry" =~ ^[yY]$ ]]
     then 
-        rm -Ri ${MAIN_LOCATION}${LOCATION}
+        rm -Ri "${MAIN_LOCATION}/${LOCATION}"
     fi
 }
 
@@ -179,8 +174,7 @@ SUPPRESS() {
 
 # gère les paramètres
 
-for i in $@;
+for i in "$@"; do
-do
     if [ "$i" == "-h" ] || [ "$i" == "--help" ]
     then
         HELP
@@ -202,7 +196,7 @@ fi
 
 # vérifie que le dossier pour stocker les vms existe & change le dossier actif pour qu'il soit cellui du lanceur.
 
-mkdir -p $MAIN_LOCATION
+mkdir -p "$MAIN_LOCATION"
 cd "$( dirname "$( readlink -f "$0" )" )" || exit
 
 # Véréfie qu'il y ait bien un fichier de config pour la vm que l'on tente de démarer dans la cas contraire en génére un.
@@ -210,16 +204,16 @@ cd "$( dirname "$( readlink -f "$0" )" )" || exit
 
 if [ "$2" == "init" ]
 then
-    INIT $1
+    INIT "$1"
 elif [ ! -f "conf/$1-vm_var.sh" ]
 then
     echo "no config file found. creating one in conf/${1}-vm_var.sh"
-    INIT $1
+    INIT "$1"
 fi
 
 #Vérifie si l'option UEFI est set dans le fichier de config. Si oui l'ajoutte aux options.
 
-. conf/$1-vm_var.sh
+. "conf/$1-vm_var.sh"
 
 for (( i=3; i<=$#; i++)); do
     if [ "${!i%=*}" == "nproc" ]
@@ -233,7 +227,7 @@ for (( i=3; i<=$#; i++)); do
         UEFI="set"
         OPTION="$OPTION \
             -drive if=pflash,format=raw,readonly=on,file=/usr/share/edk2/x64/OVMF_CODE.4m.fd \
-            -drive if=pflash,format=raw,file=${MAIN_LOCATION}${LOCATION}OVMF_VARS.4m.fd"
+            -drive if=pflash,format=raw,file=${MAIN_LOCATION}/${LOCATION}/OVMF_VARS.4m.fd"
     fi
 done
 
@@ -243,7 +237,7 @@ then
     UEFI="set"
     OPTION="$OPTION \
         -drive if=pflash,format=raw,readonly=on,file=/usr/share/edk2/x64/OVMF_CODE.4m.fd \
-        -drive if=pflash,format=raw,file=${MAIN_LOCATION}${LOCATION}OVMF_VARS.4m.fd"
+        -drive if=pflash,format=raw,file=${MAIN_LOCATION}/${LOCATION}/OVMF_VARS.4m.fd"
 fi
 
 
@@ -269,7 +263,7 @@ then
     if [ $# -ge 3 ]
     then
         echo "using image disk $3" # Error here, please don't think that there will be only three devices, should be improve like with an install-device parametter.
-        CREATE $3 # TODO
+        CREATE "$3" # TODO
     else
         echo "$#"
         echo "Error, no image defined." >&2
@@ -277,7 +271,7 @@ then
 elif [ "$2" == "suppr" ]
 then
     echo "suppressing all data of the vm $1"
-    SUPPRESS $1
+    SUPPRESS "$1"
 else
     echo "commande $2 inconnue" >&2
     HELP