Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
Next revision
Previous revision
syntax:shellvars [2018/07/12 07:59]
thebonsai EPOCH*
syntax:shellvars [2019/07/07 05:19] (current)
thebonsai [HISTSIZE]
Line 91: Line 91:
 bottom. When a subroutine is executed, the parameters supplied are pushed onto bottom. When a subroutine is executed, the parameters supplied are pushed onto
 ''​BASH_ARGV''​. ''​BASH_ARGV''​.
 +
 +==== BASH_ARGV0 ====
 +
 +^Variable: ​ |''​BASH_ARGV0'' ​ ^Since: ​ |5.0-alpha ​  |
 +^Type: ​ |string ​ ^Read-only: ​ |no  |
 +^Set by Bash:  |yes  ^Default: |same as ''​$0'' ​ |
 +
 +Expands to the name of the shell or shell script - as the special parameter ''​$0''​ does. Assignments to ''​BASH_ARGV0''​ causes the value to be assigned to ''​$0''​.
 +
 +If this parameter is unset, it loses its special properties, even if subsequently reset.
 +
  
 ==== BASH_CMDS ==== ==== BASH_CMDS ====
Line 741: Line 752:
 ^Variable: ​ |''​HISTSIZE'' ​ ^Since: ​ |unknown ​  | ^Variable: ​ |''​HISTSIZE'' ​ ^Since: ​ |unknown ​  |
 ^Type: ​ |normal variable ​ ^Read-only: ​ |no  | ^Type: ​ |normal variable ​ ^Read-only: ​ |no  |
-^Set by Bash:  |if unset  ^Default: |500  |+^Set by Bash:  |if unset  ^Default: |set at compile time (default ​500 |
  
 The number of commands to remember in the command history. The number of commands to remember in the command history.
Line 939: Line 950:
 ^Set by Bash:  |no  ^Default: |system-dependent (set on compile time)  | ^Set by Bash:  |no  ^Default: |system-dependent (set on compile time)  |
  
-The search path for commands. +The search path for commands. ​This is a colon-separated list of directories in which the shell looks for commands.
- +
-It is a colon-separated list of directories in which the shell looks for commands.+
  
 A zero-length (null) directory name in the value of ''​PATH''​ indicates the current directory. A zero-length (null) directory name in the value of ''​PATH''​ indicates the current directory.
Line 948: Line 957:
 trailing colon. trailing colon.
  
 +There can be a static path compiled in for use in a restricted shell.
 ==== POSIXLY_CORRECT ==== ==== POSIXLY_CORRECT ====
 ^Variable: ​ |''​POSIXLY_CORRECT'' ​ ^Since: ​ |unknown ​  | ^Variable: ​ |''​POSIXLY_CORRECT'' ​ ^Since: ​ |unknown ​  |
Line 978: Line 988:
  
 Characters removed are replaced with an ellipsis. Characters removed are replaced with an ellipsis.
 +
 +==== PS0 ====
 +^Variable: ​ |''​PS0'' ​ ^Since: ​ |4.4.0 ​  |
 +^Type: ​ |normal variable ​ ^Read-only: ​ |no  |
 +^Set by Bash:  |if unset  ^Default: |"''''" ​ |
 +
 +Expanded and displayed by interactive shells after reading a complete command but before executing it.
  
 ==== PS1 ==== ==== PS1 ====
  • syntax/shellvars.1531382398.txt
  • Last modified: 2018/07/12 07:59
  • by thebonsai