features

sh/minutemaid

@@ -1,23 +1,30 @@
 #!/bin/zsh
 # crontab usage:
-# * * * * * ~/sh/minutemaid 9 do something # runs every nine minutes
-local bottom=0 strip=0 interval=2 opt=
-while getopts ':h' opt; do
+#* * * * * minutemaid 9 cd repo; git pull # runs every nine minutes
+
+local offset=0 opt=
+while getopts 'o:h' opt; do
     case $opt in
+    o)  offset="$OPTARG";;
     ?)  local fd=0
         [ $opt = h ] && fd=0 || fd=2
-        echo -E "usage: $0 {period} {command} [{args...}]" >&$fd
+        echo -E "usage: $0 [-o offset] {interval} [{command} [{args...}]]" >&$fd
         [ $opt = h ] && return 0 || return 1;;
     esac
 done
 shift $((OPTIND-1))
 
-local period=${1:?no period specified}
-shift
-local cmd=${1:?no command specified}
+local interval="${1:?no interval specified}"
 shift
 
-sec="$(date +%s)"
-let min=sec/60
-let mod=min%period
-[ $mod -eq 0 ] && "$cmd" "$@"
+local sec="$(date +%s)"
+let min=sec/60+offset
+let mod=min%interval
+if [ $# -gt 1 ]; then
+    local cmd="${1}"
+    shift
+
+    [ $mod -eq 0 ] && "$cmd" "$@"
+else
+    [ $mod -eq 0 ] && return 0 || return 1
+fi