Add possibility to remove keys from db

README.md

@@ -15,12 +15,14 @@ It is an extension of [redi.sh](https://github.com/crypt1d/redi.sh) which allows
     -h              : Tells the script that we are working with hashes, instead of regular variables.
     -r <min,max>    : When used with -a, defines the range of elements to get from the array. Default is all (0,-1).
     -g <name>       : Get the variable/array specified by <name> and output it to stdout.
-    -s <name>        : Set the variable/array specified by <name> with the input from stdin.
-    -f <name>        : Set the hash field specified by <name> with the input from stdin.
+    -s <name>       : Set the variable/array specified by <name> with the input from stdin.
+    -f <name>       : Set the hash field specified by <name> with the input from stdin.
     -p <password>   : Use "AUTH <password>" before running the SET/GET command to authenticate to redis.
     -H <hostname>   : Specify a custom hostname to connect to. Default is localhost.
-    -d <number>   : Specify a custom database number from range 0-15\. Default is 0
+    -d <number>     : Specify a custom database number from range 0-15\. Default is 0
     -P <port>       : Specify a custom port to connect to. Default is 6379.
+    -w <name>       : Deletes specified key from database
+    -W              : Deletes all keys (same as '-w *')
 ```
 
 ## Example:

redis.sh

@@ -40,7 +40,7 @@ REDIS_HOST="${REDIS_HOST:-127.0.0.1}"
 REDIS_PORT="${REDIS_PORT:-6379}"
 REDIS_DB="${REDIS_DB:-0}"
 REDIS_ARRAY_RANGE="0,-1"
-
+REDIS_WIPEOUT=""
 
 function redis_read_str() {
         typeset REDIS_STR="$@"
@@ -179,7 +179,16 @@ function redis_set_hash() {
         printf %b "*4\r\n\$4\r\nHSET\r\n\$${#redis_key}\r\n$redis_key\r\n\$${#redis_field}\r\n$redis_field\r\n\$${#redis_value}\r\n$redis_value\r\n"
 }
 
-while getopts g:s:r:P:H:p:d:f:ha opt; do
+function redis_wipeout_all() {
+  printf %b "*1\r\n\$7\r\nFLUSHDB\r\n"
+}
+
+function redis_wipeout() {
+  typeset redis_key="$1"
+  printf %b "*2\r\n\$3\r\DEL\r\n\$${#redis_key}\r\n$redis_key\r\n"
+}
+
+while getopts g:s:r:P:H:p:d:f:ha:w:W opt; do
 	case $opt in
 		p)
 			REDIS_PW=${OPTARG}
@@ -211,18 +220,24 @@ while getopts g:s:r:P:H:p:d:f:ha opt; do
     d)
 			REDIS_DB=${OPTARG}
 			;;
+	  w)
+	    REDIS_WIPEOUT=${OPTARG}
+	    ;;
+	  W)
+	    REDIS_WIPEOUT="*"
+	    ;;
 		*)
 			echo
 			echo USAGE:
-			echo "	$0 [-a|-h] [-r <range>] [-s <var>] [-g <var>] [-f <field>] [-p <password>] [-d <database_number>] [-H <hostname>] [-P <port>]"
+			echo "	$0 [-a|-h] [-W] [-w <var>] [-r <range>] [-s <var>] [-g <var>] [-f <field>] [-p <password>] [-d <database_number>] [-H <hostname>] [-P <port>]"
 			echo
 			exit 1
 			;;
 	esac
 done
 
-if [[ -z $REDIS_GET ]] && [[ -z $REDIS_SET ]]; then
-	echo "You must either GET(-g) or SET(-s)" >&2
+if [[ -z $REDIS_GET ]] && [[ -z $REDIS_SET ]] && [[ -z $REDIS_WIPEOUT ]]; then
+	echo "You must either GET(-g) or SET(-s) or WIPEOUT(-W, -w)" >&2
 	exit 1
 fi
 
@@ -241,6 +256,17 @@ if [[ ! -z $REDIS_PW ]]; then
     redis_read $FD 1>/dev/null 2>&1
 fi
 
+if [[ ! -z $REDIS_WIPEOUT ]]; then
+  if [[ "*" == $REDIS_WIPEOUT ]] ; then
+    redis_wipeout_all >&$FD
+  else
+    redis_wipeout "$REDIS_WIPEOUT" >&$FD
+  fi
+
+  exec {FD}>&-
+  exit 0
+fi
+
 if [[ ! -z $REDIS_GET ]]; then
 	if [[ $REDIS_ARRAY -eq 1 ]] || [[ $REDIS_HASH -eq 1 ]] ; then
 	  if [[ $REDIS_ARRAY -eq 1 ]] ; then