feat: add isUpdated and cron error statement

- isUpdated (create_env_variable common.sh) to not propose overwrite field
- if cron does not exist, print error (log too)

libs/common.sh

@@ -50,8 +50,13 @@ create_env_variable() {
     local key="$1"
     local value="$2"
     local file="${3:-$ENV_FILE}"
+    local isUpdated="${4:-true}"
 
-    if [[ -z "$value" ]]; then
+    if [[ "$file" == '--' ]]; then
+        file=$ENV_FILE
+    fi
+
+    if [[ -z "$value" && "$isUpdated" == true ]]; then
         if grep -q "^$key=*" "$file" 2>/dev/null; then
             info_print "$key not updated." $WARN_FLAG
             return
@@ -61,6 +66,7 @@ create_env_variable() {
         fi
     fi
 
+    if [[ "$isUpdated" == true ]]; then 
         if grep -Eq "^${key}=" "$file" 2>/dev/null; then
             read -p "$key already set, overwrite? (y/N): " yn
 
@@ -77,6 +83,7 @@ create_env_variable() {
             echo "$key=$value" >> "$file"
             info_print "$key set." $SUCCESS_FLAG
         fi
+    fi
 }
 
 create_raw_line_variable() {

scripts/aws-backup.sh

@@ -22,8 +22,8 @@ if [[ "--install" == $INSTALLED ]]; then
     info_print "AWS configuration."
     aws configure
 
-    create_env_variable AWS_ACCESS_KEY_ID $(aws configure get aws_access_key_id)
-    create_env_variable AWS_SECRET_ACCESS_KEY $(aws configure get aws_secret_access_key)
+    create_env_variable AWS_ACCESS_KEY_ID $(aws configure get aws_access_key_id) -- false
+    create_env_variable AWS_SECRET_ACCESS_KEY $(aws configure get aws_secret_access_key) -- false
 
     touch "$BACKUP"
     info_print "$BACKUP created."
@@ -35,6 +35,11 @@ if [[ "--install" == $INSTALLED ]]; then
     done
     info_print "You can add more names later by editing $BACKUP."
 
+    if ! command -v crontab >/dev/null 2>&1; then
+        info_print "Error: crontab not found." $ERROR_FLAG
+        exit 1
+    fi
+
     CRON_JOB="0 0 * * * $SCRIPT_FILE/scripts/aws-backup.sh"
     crontab -l | grep -F "$CRON_JOB" > /dev/null 2>&1
     if ! crontab -l | grep -Fq "$CRON_JOB"; then

scripts/disk-monitor.sh

@@ -10,7 +10,7 @@ if [[ "--install" == $INSTALLED ]]; then
             disk-monitor Installation\n\
 --------------------------------------------------"
     if ! command -v crontab >/dev/null 2>&1; then
-        info_print "Cron job added." $ERROR_FLAG
+        info_print "Error: crontab not found." $ERROR_FLAG
         exit 1
     fi