shell編程系列20--文本處理三劍客之awk常用選項awk選項總結選項 解釋 -v 參數傳遞 -f 指定腳本文件 -F 指定分隔符 -V 查看awk的版本號[root@localhost shell]# awk -v num2="$num1" -v var1="$var" 'BEGIN{print num2,var1}' 20 hello world# -f 選項 文件中讀取表達式 [root@localhost shell]# cat 1.awk BEGIN{str="I hava a tream"location=index(str,"ea")print location } [root@localhost shell]# awk -f 1.awk 12[root@localhost shell]# awk -f 2.awk Transaction $ Start,Event ID:9002 [root@localhost shell]# cat 2.awk BEGIN{str="Transaction 243 Start,Event ID:9002"count=sub(/[0-9]+/,"$",str)print str }# -F 指定分隔符 [root@localhost shell]# awk -F ":" '{print $7}' passwd /bin/bash /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /bin/sync /sbin/shutdown /sbin/halt /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /sbin/nologin /bin/bash /sbin/nologin /bin/bash /sbin/nologin# 顯示版本號 [root@localhost shell]# awk -V GNU Awk 4.0.2 Copyright (C) 1989, 1991-2012 Free Software Foundation.This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

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轉載于:https://www.cnblogs.com/reblue520/p/11016891.html

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