Referencing variables in commands Post: 68082

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Top Forums Shell Programming and Scripting Referencing variables in commands Post 68082 by Just Ice on Thursday 31st of March 2005 12:37:17 AM

03-31-2005

Registered User

Quote:

Originally Posted by mharley

Also, is there a way to verify where one or more files bearing a variation on a filename exist within the directory? For example, all files under filename.*? I have been using

Code:

if [ -f filename.* ]

but I've been told that this statement is intended more for verifying the existance of a single file, not a range of files.

... this line will hold true if any file in the directory starts with "filename." so you will actually see what you're looking for if at least one of them exists in the directory ... verify this with ...

Code:

root_box:/tmp # touch filename.1 filen.1 filename.3 file.3 file4
root_box:/tmp # ls file*
file.3      file4       filen.1     filename.1  filename.3
root_box:/tmp # if [ -f filename.* ]
> then
>     ls filename.*
> else
>     ls           
> fi
filename.1  filename.3
root_box:/tmp # rm filename.1 filename.3
root_box:/tmp # ls
file.3          filen.1         orbit-root      speckeysd.lock
file4           mpHyay4c        plugtmp
root_box:/tmp # ls file*
file.3   file4    filen.1
root_box:/tmp # if [ -f filename.* ]
> then
>     ls filename.*
> else
>     ls           
> fi
file.3          filen.1         orbit-root      speckeysd.lock
file4           mpHyay4c        plugtmp
root_box:/tmp #

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service

service(8)						      System Manager's Manual							service(8)

NAME

       service - run a System V init script

SYNOPSIS

       service SCRIPT COMMAND [OPTIONS]

       service --status-all

       service --help | -h | --version

DESCRIPTION

       service	runs a System V init script in as predictable an environment as possible, removing most environment variables and with the current
       working directory set to /.

       The SCRIPT parameter specifies a System V init script, located in /etc/init.d/SCRIPT.  The  supported  values  of  COMMAND  depend  on  the
       invoked	script.  service passes COMMAND and OPTIONS to the init script unmodified.  All scripts should support at least the start and stop
       commands.  As a special case, if COMMAND is --full-restart, the script is run twice, first with the stop command, then with the start  com-
       mand.

       service --status-all runs all init scripts, in alphabetical order, with the status command.

EXIT CODES

       service calls the init script and returns the status returned by it.

FILES

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	      The directory containing System V init scripts.

ENVIRONMENT

       LANG, TERM
	      The only environment variables passed to the init scripts.

SEE ALSO

       /etc/init.d/skeleton,
       update-rc.d(8),
       init(8),
       invoke-rc.d(8).

								     Jan 2006								service(8)