#!/bin/bash # max2.sh: ¾ÆÁÖ Å« µÎ Á¤¼öÁß Å« ¼ö ±¸Çϱâ. # ÀÌ ½ºÅ©¸³Æ®´Â ¾Õ¿¡¼ ¼Ò°³Çß´ø "max.sh" ¿¹Á¦¸¦ # Å« Á¤¼ö¿¡ ´ëÇؼ µ¿ÀÛÇϵµ·Ï ¼öÁ¤ÇÑ °ÍÀÔ´Ï´Ù. EQUAL=0 # µÎ ¸Å°³º¯¼ö°¡ °°À» °æ¿ìÀÇ ¸®ÅÏ °ª. MAXRETVAL=256 # ÇÔ¼ö°¡ ¸®ÅÏÇÒ ¼ö ÀÖ´Â ÃÖ´ë ¾ç¼ö. E_PARAM_ERR=-99999 # ¸Å°³º¯¼ö ¿¡·¯. E_NPARAM_ERR=99999 # "ÀϹÝȵÈ"(Normalized) ¸Å°³º¯¼ö ¿¡·¯. max2 () # µÎ ¼ýÀÚÁß Å« ¼ö¸¦ ¸®ÅÏ. { if [ -z "$2" ] then return $E_PARAM_ERR fi if [ "$1" -eq "$2" ] then return $EQUAL else if [ "$1" -gt "$2" ] then retval=$1 else retval=$2 fi fi # -------------------------------------------------------------- # # ¿©±â°¡ Å« Á¤¼ö¸¦ ¸®ÅÏÇÒ ¼ö ÀÖ°Ô ÇØ ÁÖ´Â ºÎºÐÀÔ´Ï´Ù. if [ "$retval" -gt "$MAXRETVAL" ] # ¹üÀ§¸¦ ³Ñ´Â ¼ö¶ó¸é, then let "retval = (( 0 - $retval ))" # À½¼ö·Î Á¶ÀýÇØ ÁÝ´Ï´Ù. # (( 0 - $VALUE )) °¡ VALUE ÀÇ ºÎÈ£¸¦ ¹Ù²ãÁÝ´Ï´Ù. fi # ´ÙÇེ·´°Ôµµ, Å« *À½¼ö* ¸®ÅÏÀº °¡´ÉÇÕ´Ï´Ù. # -------------------------------------------------------------- # return $retval } max2 33001 33997 return_val=$? # -------------------------------------------------------------------------- # if [ "$return_val" -lt 0 ] # "Á¶ÀýµÈ" À½¼ö¶ó¸é, then let "return_val = (( 0 - $return_val ))" # ¾ç¼ö·Î º¯È¯. fi # $return_valÀÇ "Àý´ë°ª". # -------------------------------------------------------------------------- # if [ "$return_val" -eq "$E_NPARAM_ERR" ] then # ¸Å°³º¯¼ö ¿¡·¯ "Ç÷¡±×"µµ ºÎÈ£°¡ ¹Ù²ò´Ï´Ù. echo "¿¡·¯: ¸Å°³º¯¼ö°¡ ¸ðÀÚ¶ø´Ï´Ù." elif [ "$return_val" -eq "$EQUAL" ] then echo "µÎ ¼ýÀÚ°¡ °°½À´Ï´Ù." else echo "µÎ ¼ýÀÚÁß Å« ¼ö´Â $return_val ÀÔ´Ï´Ù." fi exit 0