#!/bin/bash # /etc/passwd ¸¦ º¸°í »ç¿ëÀÚ °èÁ¤À̸§¿¡¼ "½ÇÁ¦ À̸§"À» ¾Ë¾Æ³¿. ARGCOUNT=1 # ÇÑ °³ ÀÎÀÚ¸¸ ÇÊ¿ä. E_WRONGARGS=65 file=/etc/passwd pattern=$1 if [ $# -ne "$ARGCOUNT" ] then echo "»ç¿ë¹ý: `basename $0` USERNAME" exit $E_WRONGARGS fi file_excerpt () # ÆÄÀÏ¿¡¼ ÆÐÅÏÀ» °Ë»öÇؼ ÇØ´ç ºÎºÐÀ» Ãâ·Â. { while read line # while ¿¡¼ ²À "[ condition ]" À» ¾È ½áµµ µË´Ï´Ù. do echo "$line" | grep $1 | awk -F":" '{ print $5 }' # awk °¡ ":" ±¸ºÐÀÚ¸¦ ¾²µµ·Ï. done } <$file # ÇÔ¼ö Ç¥ÁØÀÔ·ÂÀ¸·Î ÀçÁöÇâ. file_excerpt $pattern # ÀÌ Àüü ½ºÅ©¸³Æ®´Â ´ÙÀ½Ã³·³ Çصµ µË´Ï´Ù. # grep PATTERN /etc/passwd | awk -F":" '{ print $5 }' # ¾Æ´Ï¸é # awk -F: '/PATTERN/ {print $5}' # ȤÀº # awk -F: '($1 == "username") { print $5 }' # »ç¿ëÀÚ À̸§À» º¸°í ½ÇÁ¦À̸§À» ã¾Æ³¿ # ÇÏÁö¸¸, ÀÌ·± ¹æ¹ýÀº ±³À°ÀûÀÌÁö´Â ¾ÊÀº °Í °°³×¿ä. exit 0