定义普通变量
发布时间:2020-12-15 21:12:25 所属栏目:安全 来源:网络整理
导读:1.定义普通变量实践 [[email?protected] ~]# a=1[[email?protected] ~]# b=‘2‘[[email?protected] ~]# c="3"[[email?protected] ~]# echo "$a"1[[email?protected] ~]# echo "$b"2[[email?protected] ~]# echo "${c}" ? 2. export 命令的说明 当前shell窗
1.定义普通变量实践 [[email?protected] ~]# a=1 [[email?protected] ~]# b=‘2‘ [[email?protected] ~]# c="3" [[email?protected] ~]# echo "$a" 1 [[email?protected] ~]# echo "$b" 2 [[email?protected] ~]# echo "${c}" ? 2. export命令的说明 当前shell窗口及子shell窗口生效 在新开的shell窗口不会生效,生效需要写入配置文件 #?定义变量 [[email?protected] scripts]# CSLN=clsn [[email?protected] scripts]# export CSLN1=1 #?当前窗口查看 [[email?protected] scripts]# echo $CSLN clsn [[email?protected] scripts]# echo $CSLN1 1 #?编写测试脚本 [[email?protected] scripts]# vim quanju.sh #!/bin/bash echo $CSLN echo $CSLN1 #?使用sh执行 [[email?protected] scripts]# sh quanju.sh 1 #?使用source?执行 [[email?protected] scripts]# source quanju.sh clsn 1 ? 3. 环境变量相关配置文件/etc/proflie /etc/bashrc ~/.bashrc ~/.bash_profile /etc/proflie.d/? #?目录 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |