La commande set -o

lami20j@debian-acer:~/iso$ help set 
set: set [--abefhkmnptuvxBCHP] [-o option-name] [arg ...] 
    Set or unset values of shell options and positional parameters. 
     
    Change the value of shell attributes and positional parameters, or 
    display the names and values of shell variables. 
     
    Options: 
      -a  Mark variables which are modified or created for export. 
      -b  Notify of job termination immediately. 
      -e  Exit immediately if a command exits with a non-zero status. 
      -f  Disable file name generation (globbing). 
      -h  Remember the location of commands as they are looked up. 
      -k  All assignment arguments are placed in the environment for a 
          command, not just those that precede the command name. 
      -m  Job control is enabled. 
      -n  Read commands but do not execute them. 
      -o option-name 
          Set the variable corresponding to option-name: 
              allexport    same as -a 
              braceexpand  same as -B 
              emacs        use an emacs-style line editing interface 
              errexit      same as -e 
              errtrace     same as -E 
              functrace    same as -T 
              hashall      same as -h 
              histexpand   same as -H 
              history      enable command history 
              ignoreeof    the shell will not exit upon reading EOF 
              interactive-comments 
                           allow comments to appear in interactive commands 
              keyword      same as -k 
              monitor      same as -m 
              noclobber    same as -C 
              noexec       same as -n 
              noglob       same as -f 
              nolog        currently accepted but ignored 
              notify       same as -b 
              nounset      same as -u 
              onecmd       same as -t 
              physical     same as -P 
              pipefail     the return value of a pipeline is the status of 
                           the last command to exit with a non-zero status, 
                           or zero if no command exited with a non-zero status 
              posix        change the behavior of bash where the default 
                           operation differs from the Posix standard to 
                           match the standard 
              privileged   same as -p 
              verbose      same as -v 
              vi           use a vi-style line editing interface 
              xtrace       same as -x