env命令
linux系统中的环境变量是很多的,就算是一些常用的环境变量我们也不一定能记得全名。env命令可以显示当前操作系统所有的环境变量,下面的示例代码是Ubuntu系统的。
示例
dai@ubuntu:~$ env USER=dai XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0 XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0 SSH_AUTH_SOCK=/run/user/1000/keyring-6YCIFa/ssh DEFAULTS_PATH=/usr/share/gconf/ubuntu.default.path XDG_CONFIG_DIRS=/etc/xdg/xdg-ubuntu:/usr/share/upstart/xdg:/etc/xdg PATH=/usr/local/arm/arm-2009q3/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin PWD=/home/dai HOME=/home/dai UPSTART_EVENTS=started starting LOGNAME=dai QT4_IM_MODULE=xim XDG_DATA_DIRS=/usr/share/ubuntu:/usr/share/gnome:/usr/local/share/:/usr/share/ DBUS_SESSION_BUS_ADDRESS=unix:abstract=/tmp/dbus-PERqBL8H1o LESSOPEN=| /usr/bin/lesspipe %s INSTANCE=Unity UPSTART_JOB=unity-settings-daemon TEXTDOMAIN=im-config XDG_RUNTIME_DIR=/run/user/1000 DISPLAY=:0 XDG_CURRENT_DESKTOP=Unity GTK_IM_MODULE=ibus LESSCLOSE=/usr/bin/lesspipe %s %s TEXTDOMAINDIR=/usr/share/locale/ COLORTERM=gnome-terminal XAUTHORITY=/home/dai/.Xauthority dai@ubuntu:~$
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