Linux env commands - 相关文章

【Linux env commands】的更多相关文章

linux env

.Linux的变量种类按变量的生存周期来划分,Linux变量可分为两类: 1.1 永久的:需要修改配置文件,变量永久生效. 1.2 临时的:使用export命令声明即可,变量在关闭shell时失效. .设置变量的三种方法 2.1 在/etc/profile文件中添加变量[对所有用户生效(永久的)] 用VI在文件/etc/profile文件中增加变量,该变量将会对Linux下所有用户有效,并且是“永久的”. 例如:编辑/etc/profile文件,添加CLASSPATH变量 # vi /etc/…

Linux useful commands

cat misc. cat xxx | more cat xxx | less cat > xxx , create a file xxx cat -n xxx | more with line number information. cat aaa.txt >> bbb.txt, the aaa.txt will be appened to bbb.txt tail a file with auto update when file change tail -f /var/log/sy…

Linux env命令详解

env:查询环境变量常用的命令展示查看当前环境的环境变量 [root@localhost ~]# env HOSTNAME=localhost.localdomain SELINUX_ROLE_REQUESTED= TERM=xterm SHELL=/bin/bash HISTSIZE=1000 SSH_CLIENT=192.168.25.1 49834 22 SELINUX_USE_CURRENT_RANGE= SSH_TTY=/dev/pts/1 USER=root LS_COLORS=…

linux basic commands

1. man - an interface to the on-line reference manuals $man man 2. apt - advanced package tool SEE ALSO: apt-cache, apt-get, apt.conf, sources.list $apt-cache search mysql 3.sudo - execute a command as another user (sudo allows a permitted user to ex…

Linux Basis --- commands of vi

EDIT mode to GENERAL mode: press ESC general mode: CLOSE FILE :q! :force to close the file but not save :wq! :force to save and close the file :q : close the file but not save :wq : save and close the file ENTER EDIT MODE i :insert a charactor…

Linux Network Commands

https://www.tecmint.com/linux-network-configuration-and-troubleshooting-commands/ http://www.tldp.org/LDP/GNU-Linux-Tools-Summary/html/c8319.htm https://likegeeks.com/linux-network-commands/ netstat -r…

Linux YUM (Yellowdog Updater, Modified) Commands for Package Management

Linux YUM (Yellowdog Updater, Modified) Commands for Package Management In this article, we will learn how to install, update, remove, find packages, manage packages and repositories on Linux systems using YUM (Yellowdog Updater Modified) tool develo…