待完善
Bourne Shell内置命令
- :
- .
- break
- cd
- continue
- eval
- exec
- exit
- export
- getopts
- hash
- pwd
- readonly
- return
- shift
- test
- [
- times
- trap
- umask
- unset
Bash内置命令
- alias
- bind
- builtin
- caller
- command
- declare
- echo
- enable
- help
- let
- local
- logout
- mapfile
- printf
- read
- readarray
- source
- type
- typeset
- ulimit
- unalias
改变Shell行为的内置命令
- set
- shopt
POXIS规定的特殊内置命令
break : . continue eval exec exit export readonly return set
shift trap unset
