qemush : n'exporter QEMUSH_NAME que quand on en a besoin

bin/qemush

@@ -51,7 +51,7 @@ error_usage() {
 
 # Function to start a virtual machine
 public_start() {
-    QEMUSH_NAME="$1"
+    export QEMUSH_NAME="$1"
 
     set -- "$@" \
         -name "$QEMUSH_NAME" \
@@ -66,7 +66,7 @@ public_start() {
 # Attach to a running virtual machine output, the latest opened if no
 # argument is provided
 public_attach() {
-    QEMUSH_NAME="$1"
+    export QEMUSH_NAME="$1"
     shift
 
     exec socat -,rawer,escape=15 "UNIX-CONNECT:$(pathof socket)"
@@ -90,7 +90,7 @@ public_ls() {
 
 # Create a copy-on-write disk for a virtual machine
 public_diskadd() {
-    QEMUSH_NAME="$1"
+    export QEMUSH_NAME="$1"
     shift
     exec qemu-img create -f qcow2 "$(pathof disk)" "$1"
 }
@@ -98,7 +98,7 @@ public_diskadd() {
 # Delete a disk
 public_diskrm() {
     for disk in "$@"; do
-        QEMUSH_NAME="$disk"
+        export QEMUSH_NAME="$disk"
         rm -vi -- "$(pathof disk)"
     done
 }
@@ -170,7 +170,7 @@ public_do() {
 
 # Expose SPICE via TCP
 public_spice() {
-    QEMUSH_NAME="$1"
+    export QEMUSH_NAME="$1"
     if [ -n "$2" ]; then
         port=$2
     else