Bash shell

User=>Shell
=>Kernel=>
Hardware

/etc/shells

/etc/passwd內的/bin/false

GNU加強版的sh

Bourne Again Shell

BASH的特色

history

set | grep HIST

! 16
Ctrl-R

指令補齊
檔案補齊

alias

jobs

variable

wildcard char

stdin/stdout /stderr
redirection

pipe
tee

command substitutioin