add main shell snippet

1 files changed, 34 insertions, 0 deletions

diff --git a/snippets/sh-mode/main b/snippets/sh-mode/main
new file mode 100644
index 0000000..34916fd
--- /dev/null
+++ b/snippets/sh-mode/main
@@ -0,0 +1,34 @@
+# -*- mode: snippet -*-
+# name: main
+# key: main
+# --
+#!/bin/sh
+
+set -eu
+
+fatal() {
+    printf "$*\n" >/dev/stderr
+    exit 1
+}
+
+usage() {
+    cat <<EOF
+usage: $0 OPTIONS <arg-1>
+
+OPTIONS
+  -h  display help
+EOF
+}
+
+OPTIND=1
+while getopts 'h' arg; do
+    case "$arg" in
+	h) usage; exit 0 ;;
+	?) fatal "unknown options" ;;
+    esac
+done
+shift $((OPTIND - 1))
+
+if [ $# -lt 1 ]; then
+    fatal "missing argument(s)"
+fi