making generic to run on multiple systems

backup.sh

@@ -61,7 +61,7 @@ print_help () {
 }
 
 print_and_log () {
-    /usr/bin/ts "%Y-%m-%dT%H:%M:%S" | /usr/bin/tee -a $BACKUP_LOG
+    /usr/bin/env ts "%Y-%m-%dT%H:%M:%S" | /usr/bin/tee -a $BACKUP_LOG
 }
 
 set -o errexit
@@ -70,6 +70,7 @@ set -o pipefail
 ACTION=$1
 DESTINATION=$2
 INPUT="${@:3}"
+RESTIC=$(which restic)
 
 if [[ -z $DESTINATION && $ACTION == "help" ]]; then
     print_logo
@@ -105,7 +106,7 @@ else
         "backup")
             if [[ $AC_POWER == 1 ]]; then
                 echo "backing up to $DESTINATION." | print_and_log
-                /usr/bin/restic \
+                RESTIC \
                     -r "$BACKUP_REPOSITORY" \
                     -p "$BACKUP_PASSWORD" \
                     --cleanup-cache \
@@ -120,7 +121,7 @@ else
             ;;
         "check")
             echo "Checking backup repository at $DESTINATION" | print_and_log
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -128,7 +129,7 @@ else
             ;;
         "find")
             echo "Searching for $INPUT at $DESTINATION" 
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -140,7 +141,7 @@ else
             ;;
         "init")
             echo "Initializing backup repository at $DESTINATION" | print_and_log
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -148,7 +149,7 @@ else
             ;;
         "mount")
             echo "Mounting backup repository $DESTINATION at $INPUT" | print_and_log
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -156,7 +157,7 @@ else
             ;;
         "restore")
             echo "Restoring from $DESTINATION, $INPUT" | print_and_log
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -164,7 +165,7 @@ else
             ;;
         "snapshots")
             echo "Listing snapshots on $DESTINATION"
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -172,7 +173,7 @@ else
             ;;
         "stats")
             echo "Printing statistics for $DESTINATION"
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -204,7 +205,7 @@ else
             ;;
         "unlock")
             echo "Unlocking backup repository at $DESTINATION" | print_and_log
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \
@@ -212,7 +213,7 @@ else
             ;;
         "clean")
             echo "Cleaning repository at $DESTINATION" | print_and_log
-            /usr/bin/restic \
+            RESTIC \
                 -r "$BACKUP_REPOSITORY" \
                 -p "$BACKUP_PASSWORD" \
                 --verbose \