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shell_options.txt
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shell_options.txt
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SHELL_OPTIONS
set -OPT_ABBR
set -o OPT_NAME
shopt -o -s OPT_NAME... #turns on une option simple du shell courant (voir doc)
set +OPT_ABBR
set +o OPT_NAME
shopt -o -u OPT_NAME... #turns off une option simple du shell courant (voir doc)
#!/bin/bash -OPT_ABBR #Il est possible de le declarer egalement apres le
#!/bin/bash +o OPT_NAME #Shebang
bash +OPT_ABBR scrit.sh #Il est possible aussi de le declarer dans la commande
bash -o OPTNAM scrit.sh #lancant le script (notamment en console). Certaines
#options, dont -i, ne sont valables qu'ainsi.
shopt -s OPT_NAME... #turns on une option complexe du shell courant
shopt -u OPT_NAME... #turns out une option complexe du shell courant
shopt #Imprime toutes les options complexes courantes et leur
shopt -p #valeur
shopt OPT_NAME #Imprime la valeur d'OPT_NAME
shopt -q OPT_NAME #Mode silencieux de shopt (teste une variable)
$- #ensemble des abbréviations des options simples (en
#ayant une) passees au shell
SHELLOPTS #ensembles des noms des options simples passées au shell
BASHOPTS #ensemble des options complexes passees au shell
#(Bash 4)
RESTRICTED MODE ==> #/bin/rbash équivaut à /bin/bash -r
LISTE D'OPTIONS #Voici la liste des options simples (I et N signifient
SIMPLES ==> #shell interactif ou non pour le fait que l'option soit
#activée par DEFO) :
ABBR NOM DEFO DESCRIPTION
I N
-B brace expansion O O #Enable brace expansion
-C noclobber N N #Prevent overwriting of files by redirection (may
#be overridden by >|)
-E errtrace N N #ERR-traps are inherited by shell functions,
#command substitutions, and subshells
-T functrace N N #DEBUG- and RETURN-traps are inherited by shell
#functions, command substitutions, and subshells
-H histexpand O N #Enable !-style history expansion.
-P physical N N #Don't follow symlinks when changing directories
#use the physical filesystem structure.
-a allexport N N #Export all defined variables
-b notify N N #Notify when jobs running in background terminate
#(don't wait for the next prompt), et exécute
#toute trap sur SIGCHLD également.
-e errexit N N #Abort script when a command exits with non-zero
#status (except in until or while loops, if-tests,
#&& and || constructs)
-f noglob N N #Globbing disabled
-h hashall O O #Remember the location of commands as they are
#looked up for execution.
-i interactive O N #Script runs in interactive mode
-m monitor O N #Job control is enabled. Background processes run
#in a separate process group and a line containing
#their exit status is printed upon their
#completion
-n noexec N N #Read commands in script, but do not execute them,
#useful for syntax check
-p privileged N N #Script runs as "suid"
-r restricted N N #restricted mode. Il devient interdit :
# - de tenter de supprimer le restricted mode
# - de tenter de lancer un nouveau shell (d'ou
# interdiction d'exec)
# - d'utiliser cd, command -p, enable
# - de rediriger les outputs
# - de changer $SHELLOPTS, $PATH, $SHELL,
# $BASH_ENV ou $ENV
# - de lancer une commande en utilisant son
# chemin
# - de mettre un chemin de fichier contenant un
# slash comme argument de source ou de hash -p
# - at startup, n'hérite pas des fonctions de son
# parent
-s stdin N N #Read commands from stdin
-t onecmd N N #Exit after first command
-u nounset N N #Attempt to use undefined variable outputs error
#message, and forces an exit
-v verbose N N #Print each command to stdout before executing it
-x xtrace N N #Similar to -v, but expands commands, print to
#stderr, et utilise PS4
emacs O N #Use an emacs-style command line editing interface
history O N #If set, command historization is done
ignoreeof N N #Set $IGNOREEOF to 10. See shell variables.
pipefail N N #If set, the exit code from a pipeline is
#different to the normal ("last command in
#pipeline") behaviour: TRUE when no command
#failed, FALSE when something failed (code of the
#rightmost command that failed)
posix N N #When set, Bash runs in POSIX mode.
vi N O #Enables a vi-style command line editing interface
LISTE D'OPTIONS #Voici la liste des options simples (I et N signifient
COMPLEXES ==> #shell interactif ou non pour le fait que l'option soit
#activée par DEFO).
#Les options suivantes sont propres à Bash 4 :
# - autocd
# - checkjobs
# - compat32
# - compat40
# - dirspell
# - globstar
#INTER décrit si l'option doit avoir en shell interactif
#(I), non-interactif (N), ou les deux (IN)
#Voici donc :
NOM DEFO INTER DESCRIPTION
I N
autocd N N I #Une commande correspondant à un chemin de
#répertoire exécute cd "ce répertoire"
cdable_vars N N IN #Si dans cd STRING, STRING n'est pas un chemin
#valide, le considère comme une $VAR contenant un
#chemin
cdspell N N I #Minor errors in the spelling of DIR dans cd DIR
#will be corrected :
# - character used for another
# - a missing character
# - a character written twice
checkhash N N IN #checks that a command found in the hash table
#exists before trying to execute it. If a hashed
#command no longer exists, a normal path search is
#performed.
checkjobs N N I #lists the status of any stopped and running jobs
#before exiting an interactive shell. If any jobs
#are running, this causes the exit to be deferred
#until a second exit is attempted without an
#intervening command. The shell always postpones
#exiting if any jobs are stopped.
checkwinsizeN N IN #checks the window size after each command and, if
#necessary, updates the values of the variables
#LINES and COLUMN
cmdhist O O IN #save all lines of a multiple-line command in the
#same history entry. This allows easy re-editing of
#multi-line commands.
compat31 N N IN #Compatiblity mode for Bash 3.1
compat32 N N IN #Compatiblity mode for Bash 3.2
compat40 N N IN #Compatiblity mode for Bash 4.0
dirspell N N IN #Bash will perform spelling corrections on directory
#names to match a glob.
dotglob N N IN #* includes dotfiles (sauf . et ..)
execfail N N N #will not exit if it cannot execute the file
#specified as an argument to exec
expand_
aliases O N IN #aliases are expanded
extdebug N N IN #behavior intended for use by debuggers is enabled,
#comme le fait d'afficher le numéro de ligne et
#source file des fonctions)
extglob N N IN #Active le globbing étendu. Doit être activé une
#ligne avant l'utilisant des extended pattern
#(ligne séparée par newline et non ;)
extquote O O IN #$' ' is performed within parameter expansions
#enclosed in double quotes. Doit être activé une
#ligne avant l'utilisant des extended pattern
#(ligne séparée par newline et non ;)
failglob N N IN #globbing failing to match filenames during result
#in an error message.
force_
fignore O O I #the files with names ending by the FIGNORE shell
#variable are not auto-completed
globstar N N IN #recursive globbing with ** is enabled.
gnu_errfmt N N IN #shell error messages are written in the "standard
#GNU error message format".
histappend N N I #the history list is appended to the HISTFILE when
#the shell exits, rather than overwriting it
histreedit N N I #Able to re-edit a failed history substitution
histverify N N I #Allow to review a history substitution result by
#loading the resulting line into the editing
#buffer, rather than directly executing it.
hostcompleteO O I #If set, Bash completion also completes hostnames.
huponexit N N I #If set, Bash will send the SIGHUP signal to all
#jobs when an interactive login shell exits.
interactive
_comments O O I #Allow commenting in interactive shells
lithist N N I #if the cmdhist option is enabled, multi-line
#commands are saved to the history with embedded
#newlines rather than using semicolon separators
#where possible.
login_shell N N IN #The option is set when Bash is a login shell. This
#is a readonly option.
mailwarn N N I #If set, and a file that Bash is checking for mail
#has been accessed since the last time it was
#checked, the message "The mail in mailfile has
#been read" is displayed.
no_empty_
cmd_
completion N N I #Bash will not autocomplete on an empty line.
nocaseglob N N IN #Words containing globbing for performing pathname
#expansion get case-insensitive, ainsi que les tests
# [[ =~ ]].
nocasematch N N IN #case structures et [[ ]] tests ( ==, !=, =~ )
#deviennent insensibles à la casse
nullglob N N I #patterns which match no files expand to a null
#string, rather than themselves.
progcomp O O I #Autocompletion is enabled
promptvars O O I #prompt strings undergo :
# - parameter expansion
# - command substitution
# - arithmetic expansion
# - quote removal
#after being expanded using the prompt sequence
restricted #The option is set when Bash is a restricted shell.
_shell N N I #This is a readonly option.
shift_ #shift prints an error message when the shift count
verbose N N I #exceeds the number of positional parameters.
sourcepath O O I #source builtin uses PATH to find the directory
#containing the file supplied as an argument
xpg_echo N N I #echo a toujours l'option -e d'impliqué