(scripts) added script to check if a service is running, added script to

set a reminder with `at(d)`

scripts/process-status.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+
+get_process_status() {
+    if (($# != 1)); then
+        echo "get_process_status() takes exactly ONE argument"
+        return 1
+    fi
+    if ! status="$(systemctl status "$*")"; then
+        echo "could not find a process named [$*]"
+        return 1
+    fi
+    if ! status="$(echo "${status}" | grep -P "Active:")"; then
+        echo "failed to find line"
+        return 1
+    fi
+    if ! status="$(echo "${status}" | grep -oP "(?<=\()\w+(?=\))")"; then
+        echo "failed to find status"
+        return 1
+    fi
+    echo "${status}"
+    return 0
+}
+
+check_process_status() {
+    if (($# != 1)) && [[ -z "${stdin}" ]]; then
+        echo "check_process_status() takes exactly ONE argument != #$#"
+        return 1
+    fi
+    if [[ "$1" == "-" ]]; then
+        input="$(cat)"
+    else
+        input="$1"
+    fi
+    if [[ "${input}" != "running" ]]; then
+        return 1
+    fi
+    return 0
+}
+
+is_process_running() {
+    get_process_status "$*" | check_process_status - >/dev/null 2>&1
+}