#!/bin/bash # ¹®ÀÚ¿À» ÇÊÅ͸µÇϱâ À§Çؼ "case" ±¸¹® ¾²±â. SUCCESS=0 FAILURE=-1 isalpha () # ÀÔ·Â ¹®ÀÚ¿ÀÇ "ù¹ø° ¹®ÀÚ"°¡ ¾ËÆĺªÀÎÁö ¾Æ´ÑÁö È®ÀÎ. { if [ -z "$1" ] # ÀÎÀÚ ¾øÀÌ ³Ñ¾î¿Ô±º. then return $FAILURE fi case "$1" in [a-zA-Z]*) return $SUCCESS;; # ¹®ÀÚ·Î ½ÃÀÛÇÏ´ÂÁö. * ) return $FAILURE;; esac } # C ÀÇ "isalpha()" ÇÔ¼ö¿Í ºñ±³ÇØ º¸¼¼¿ä. isalpha2 () # "¹®ÀÚ¿ Àüü"°¡ ¾ËÆĺªÀÎÁö È®ÀÎ. { [ $# -eq 1 ] || return $FAILURE case $1 in *[!a-zA-Z]*|"") return $FAILURE;; *) return $SUCCESS;; esac } check_var () # isalpha() ÀÇ ÇÁ·ÐÆ®¿£µå(front-end) { if isalpha "$@" then echo "$* = ¾ËÆĺª" else echo "$* = ¾ËÆĺª ¾Æ´Ô" # ÀÎÀÚ°¡ ¾ø¾îµµ "¾ËÆĺª ¾Æ´Ô"ÀÓ. fi } a=23skidoo b=H3llo c=-What? d=`echo $b` # ¸í·É¾î ġȯ. check_var $a check_var $b check_var $c check_var $d check_var # ÀÎÀÚ¾øÀÌ ºÎ¸£¸é ¾î¶»°Ô µÉ±î¿ä? # S.C. °¡ ´õ ÁÁ°Ô °íħ. exit 0