bashrc: new repeat and parallel

linux-bash/bash_aliases.sh

@@ -123,6 +123,45 @@ add() {
     fi
     diff
 }
+parallel() {
+    if [ $# -lt 2 ]; then
+        echo "Usage: parallel <number_of_instances> <command>"
+        return 1
+    fi
+
+    count=$1
+    shift
+    command="$@"
+
+    for i in $(seq 1 $count); do
+        eval "$command" &
+    done
+
+    wait
+}
+
+repeat() {
+    if [ $# -lt 2 ]; then
+        echo "Usage: repeat <interval>[s|m|h] <command>"
+        return 1
+    fi
+
+    interval=$(echo $1 | sed 's/[smh]$//')
+    unit=${1##*[0-9]}
+    command="${@:2}"
+
+    case $unit in
+        s|'') seconds=$interval;;
+        m) seconds=$((interval * 60));;
+        h) seconds=$((interval * 3600));;
+        *) echo "Invalid time unit. Use 's' for seconds, 'm' for minutes, 'h' for hours, or no unit for seconds."; return 1;;
+    esac
+
+    while true; do
+        eval $command
+        sleep $seconds
+    done
+}
 alias remote="git remote -v"
 alias stash="git stash"
 alias branch="git branch"