Builtin Commands

Contents

  1. Builtin Commands
    1. :
    2. Alias
    3. Bg
    4. Bind
    5. Break
    6. Builtin
    7. Caller
    8. Cd
    9. Command
    10. CompGen
    11. Complete
    12. CompOpt
    13. Continue
    14. Declare
    15. Dirs
    16. Disown
    17. Echo
    18. Enable
    19. Eval
    20. Exec
    21. Exit
    22. Export
    23. Fc
    24. Fg
    25. GetOpts
    26. Hash
    27. Help
    28. History
    29. Jobs
    30. Kill
    31. Let
    32. Local
    33. LogOut
    34. MapFile
    35. PopD
    36. PrintF
    37. PushD
    38. Pwd
    39. Read
    40. ReadArray
    41. ReadOnly
    42. Return
    43. Set
    44. Shift
    45. ShOpt
    46. Source
    47. Test
    48. Time
    49. Trap
    50. TypeSet
    51. UnAlias
    52. UnSet
    53. Wait

:

Does nothing; arguments passed to it are expanded but immediately discarded.

Alias

See here.

Bg

Bind

Break

Builtin

Execute a builtin command. This is only useful when reimplementing a builtin but still need to call the original builtin within the function.

Caller

Cd

Change the current working directory to a new path. Can be a relative or absolute path, as well as the special . and .. directories.

Note the rules for tilde expansion when using the ~ symbol here.

cd - changes the current working directory to the previous working directory.

There is also special behavior around specifying nothing. cd is the same as cd ~.

Command

Execute a command. This can be useful to call a command when there is a function with the same name. It can also be used to determine if a command is locally available. 

if ! command -v mypy >/dev/null 2>&1; then
  echo "cannot locate mypy; is it installed?"
  exit
fi

CompGen

See here.

Complete

See here.

CompOpt

See here.

Continue

Declare

Dirs

Disown

Echo

Enable

Eval

Exec

Exit

If used in an interactive shell, or when used in a script that is sourced, causes the shell session to exit.

Export

Fc

Fg

GetOpts

Hash

Help

History

Jobs

Kill

Let

Local

LogOut

MapFile

PopD

PrintF

PushD

Pwd

Prints the current working directory.

Read

ReadArray

ReadOnly

Return

Only valid within a function definition. See here.

Set

See here.

Shift

ShOpt

See here.

Source

Aliased to ..

Test

Aliased to [.

See here.

Time

Trap

TypeSet

UnAlias

UnSet

Wait

CategoryRicottone