系统信息
wch@wch-virtual-machine[foo] uname -a
Linux wch-virtual-machine 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 11:55:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
网络配置
ifconfig
关于shell
##显示所有有效shell
wch@wch-virtual-machine[foo] cat /etc/shells
# /etc/shells: valid login shells
/bin/sh
/bin/dash
/bin/bash
/bin/rbash
/bin/zsh
/usr/bin/zsh
/bin/tcsh
/usr/bin/tcsh
/bin/csh
/usr/bin/screen
/bin/ksh93
##显示当前shell
wch@wch-virtual-machine[foo] echo $SHELL
/bin/zsh
wch@wch-virtual-machine[foo] echo $0
zsh
##修改shell为zsh
chsh -s /bin/zsh
