please tell me function of operator ! in unix
! control.pls.desactivado.sh
! refer to history command in shell prompt.
!! # to run the previous command
!string # run recent command starting with characters in string.
little confusing about your file name:eek:
The exclamation mark has different meanings according to context. For example:
In the "find" command, ! means NOT.
In the "more" command, "! command" means break out of "more" and execute command. When searching within in "more", ! means NOT.
In the first line of a script the shebang line, #! states which shell is to be used to run the script.
In "vi" the exclamation mark has many meanings. ":! command" executes unix command. When editing "!" has other meanings (see "man vi").
! control.pls.desactivado.sh
You have not given us enough content! Is this a line from a shell script or is this a command you are entering interactively?