setコマンド
set [--abefhkmnptuvxBCHP] [-o option] [argument ...]
If no options or arguments are supplied, set displays the names and values of all shell
variables and functions, sorted according to the current locale, in a format that may be
reused as input. When options are supplied, they set or unset shell attributes. Options,
if specified, have the following meanings:
| オプション |
説明 |
-a
|
Mark variables which are modified or created for export. |
-b
|
Cause the status of terminated background jobs to be reported immediately, rather than
before printing the next primary prompt. |
-e
|
Exit immediately if a simple command (see section Simple Commands) exits with a
non-zero status, unless the command that fails is part of an until or while loop, part of
an if statement, part of a && or || list, or if the command's return status is
being inverted using !. |
-f
|
Disable file name generation (globbing). |
-h
|
Locate and remember (hash) commands as they are looked up for execution. This option
is enabled by default. |
-k
|
All arguments in the form of assignment statements are placed in the environment for a
command, not just those that precede the command name. |
-m
|
Job control is enabled (see section Job Control). |
-n
|
Read commands but do not execute them; this may be used to check a script for syntax
errors. This option is ignored by interactive shells. |
-o
|
-o option-name Set the option corresponding to option-name:
allexport
|
Same as -a. |
braceexpand
|
Same as -B. |
emacs
|
Use an emacs-style line editing interface (see section Command Line Editing). |
errexit
|
Same as -e. |
hashall
|
Same as -h. |
histexpand
|
Same as -H. |
history
|
Enable command history, as described in section Bash History Facilities. This option
is on by default in interactive shells. |
ignoreeof
|
An interactive shell will not exit upon reading EOF. |
keyword
|
Same as -k. |
monitor
|
Same as -m. |
noclobber
|
Same as -C. |
noexec
|
Same as -n. |
noglob
|
Same as -f. |
notify
|
Same as -b. |
nounset
|
Same as -u. |
onecmd
|
Same as -t. |
physical
|
Same as -P. |
posix
|
Change the behavior of Bash where the default operation differs from the POSIX 1003.2
standard to match the standard (see section Bash POSIX Mode). This is intended to make
Bash behave as a strict superset of that standard. |
privileged
|
Same as -p. |
verbose
|
Same as -v. |
vi
|
Use a vi-style line editing interface. |
xtrace
|
Same as -x. |
|
-p
|
Turn on privileged mode. In this mode, the $BASH_ENV and $ENV files are not processed,
shell functions are not inherited from the environment, and the SHELLOPTS variable, if it
appears in the environment, is ignored. This is enabled automatically on startup if the
effective user (group) id is not equal to the real user (group) id. Turning this option
off causes the effective user and group ids to be set to the real user and group ids. |
-t
|
Exit after reading and executing one command. |
-u
|
Treat unset variables as an error when performing parameter expansion. An error
message will be written to the standard error, and a non-interactive shell will exit. |
-v
|
Print shell input lines as they are read. |
-x
|
Print a trace of simple commands and their arguments after they are expanded and
before they are executed. |
-B
|
The shell will perform brace expansion (see section Brace Expansion). This option is
on by default. |
-C
|
Prevent output redirection using `>', `>&', and `<>' from overwriting
existing files. |
-H
|
Enable `!' style history substitution (see section History Expansion). This option is
on by default for interactive shells. |
-P
|
If set, do not follow symbolic links when performing commands such as cd which change
the current directory. The physical directory is used instead. By default, Bash follows
the logical chain of directories when performing commands which change the current
directory. For example, if `/usr/sys' is a symbolic link to `/usr/local/sys' then:
$ cd /usr/sys; echo $PWD
/usr/sys
$ cd ..; pwd
/usr
If set -P is on, then:
$ cd /usr/sys; echo $PWD
/usr/local/sys
$ cd ..; pwd
/usr/local |
--
|
If no arguments follow this option, then the positional parameters are unset.
Otherwise, the positional parameters are set to the arguments, even if some of them begin
with a `-'. |
-
|
Signal the end of options, cause all remaining arguments to be assigned to the
positional parameters. The `-x' and `-v' options are turned off. If there are no
arguments, the positional parameters remain unchanged. |
Using `+' rather than `-' causes these options to be turned off. The options can also
be used upon invocation of the shell. The current set of options may be found in $-. The
remaining N arguments are positional parameters and are assigned, in order, to $1, $2, ...
$N. The special parameter # is set to N. The return status is always zero unless an
invalid option is supplied.
|
