比如我的命令:export -p
declare -x MAIL="/var/mail/wbs"
declare -x OLDPWD="/home/wbs/design/test"
declare -x PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games"
declare -x PWD="/home/wbs/design"
declare -x QT_QPA_PLATFORMTHEME="appmenu-qt5"
declare -x SHELL="/bin/bash"
declare -x SHLVL="1"
declare -x SSH_CLIENT="172.19.112.112 64188 1015"
declare -x SSH_CONNECTION="172.19.112.112 64188 172.19.168.17 1015"
declare -x SSH_TTY="/dev/pts/17"
declare -x TERM="xterm"
declare -x USER="wbs"
declare -x XDG_RUNTIME_DIR="/run/user/1000"
declare -x XDG_SESSION_ID="4"
wbs@lan:design$