Linux シェル変数コマンド

set

set
BASH=/bin/bash
BASH_ARGC=()
BASH_ARGV=()
BASH_LINENO=()
BASH_REMATCH=([0]="z")
BASH_SOURCE=()
BASH_VERSINFO=([0]="3" [1]="2" [2]="57" [3]="1" [4]="release" [5]="x86_64-apple-darwin19")
BASH_VERSION='3.2.57(1)-release'
COLUMNS=145
CPPFLAGS=-I/usr/local/opt/openssl@1.1/include
DIRSTACK=()
EUID=501
GROUPS=()
HISTFILE=/Users/kaede/.bash_sessions/5731033B-FE81-4488-9C44-85C77EDA7002.historynew
HISTFILESIZE=500
HISTSIZE=500
HOME=/Users/kaede

シェルに入っている変数を全部表示する

env

env
MANPATH=/opt/local/man:/opt/local/man:
LDFLAGS=-L/usr/local/opt/openssl@1.1/lib
TERM_PROGRAM=Apple_Terminal
TERM=xterm-256color
SHELL=/bin/bash
USER=kaede

PWD=/Users/kaede/code/temp/fileOperate/xz

PATH=/Users/kaede/.rbenv/shims:/opt/local/bin:/opt/local/sbin:/usr/local/opt/libiconv/bin:/.............
HOME=/Users/kaede

シェル変数の中の環境変数を出力する

PWD, SHELL, USER, PATH, などが見れる

printenv

env より表示される数が少ない？

printenv
MANPATH=/opt/local/man:/opt/local/man:
LDFLAGS=-L/usr/local/opt/openssl@1.1/lib
TERM_PROGRAM=Apple_Terminal
TERM=xterm-256color
SHELL=/bin/bash

PWD=/Users/kaede/code/temp/fileOperate/xz
XPC_FLAGS=0x0
RBENV_SHELL=bash
XPC_SERVICE_NAME=0
HOME=/Users/kaede
SHLVL=1
LOGNAME=kaede
LC_CTYPE=UTF-8