OLDPWD

bash has a environment variable OLDPWD to keep track you last pwd when you cd directory

eg. when you cd a dir and want to copy a file from your place before cd

cp $OLDPWD/your_file ./

when you finished your work and want to return you last place

cd -


declare -x DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/0/bus" declare -x DISPLAY="localhost:11.0" declare -x HOME="/root" declare -x LANG="zh_CN.UTF-8" declare -x LANGUAGE="zh_CN:zh" declare -x LOGNAME="root" declare -x MOTD_SHOWN="pam" declare -x OLDPWD declare -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" declare -x PWD="/root" declare -x SHELL="/bin/bash" declare -x SHLVL="1" declare -x SSH_CLIENT="192.168.227.1 51811 22" declare -x SSH_CONNECTION="192.168.227.1 51811 192.168.227.129 22" declare -x SSH_TTY="/dev/pts/2" declare -x TERM="xterm" declare -x USER="root" declare -x XDG_DATA_DIRS="/usr/share/gnome:/usr/local/share/:/usr/share/" declare -x XDG_RUNTIME_DIR="/run/user/0" declare -x XDG_SESSION_CLASS="user" declare -x XDG_SESSION_ID="7" declare -x XDG_SESSION_TYPE="tty" declare -x DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/0/bus" declare -x DISPLAY="localhost:11.0" declare -x DOCKER_HOST="unix:///run/docker/docker.sock" declare -x HOME="/root" declare -x LANG="zh_CN.UTF-8" declare -x LANGUAGE="zh_CN:zh" declare -x LOGNAME="root" declare -x MOTD_SHOWN="pam" declare -x OLDPWD declare -x PATH="/usr/local/docker:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" declare -x PWD="/root" declare -x SHELL="/bin/bash" declare -x SHLVL="1" declare -x SSH_CLIENT="192.168.227.1 51811 22" declare -x SSH_CONNECTION="192.168.227.1 51811 192.168.227.129 22" declare -x SSH_TTY="/dev/pts/2" declare -x TERM="xterm" declare -x USER="root" declare -x XDG_DATA_DIRS="/usr/share/gnome:/usr/local/share/:/usr/share/" declare -x XDG_RUNTIME_DIR="/run/user/0" declare -x XDG_SESSION_CLASS="user" declare -x XDG_SESSION_ID="7" declare -x XDG_SESSION_TYPE="tty" -bash: n:/bin: 没有那个文件或目录 declare -x DBUS_SESSION_BUS_ADDRESS="unix:path=/run/user/0/bus" declare -x DISPLAY="localhost:11.0" declare -x DOCKER_HOST="unix:///run/docker/docker.sock" declare -x HOME="/root" declare -x LANG="zh_CN.UTF-8" declare -x LANGUAGE="zh_CN:zh" declare -x LOGNAME="root"
最新发布
03-12
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