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Full Discussion: Count matching filenames in a folder
Top Forums Shell Programming and Scripting Count matching filenames in a folder Post 302330931 by Scott on Thursday 2nd of July 2009 06:55:43 PM
Old 07-02-2009
The fist "ls" is used to test if any files matching this criteria are found. The output of ls is "thrown away" (to /dev/null) - the point being to know if there are such files, not to list them. If files are found, the "if [ $? -eq 0 ]" will be true (the ls returned 0 meaning success - files were found). But ls will write to standard error if no files are found. You can get rid of the error by directing standard error to /dev/null too. The simplest way is to direct standard error to standard output (which you threw away to /dev/null), so...

Change:

Code:
ls -1rt abc[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9].txt > /dev/null

To:

Code:
ls -1rt abc[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9].txt > /dev/null 2>&1

I hope this was explanatory and not at all boring to read!
Last edited by Scott; 07-02-2009 at 08:10 PM..
 

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LEARN ABOUT OSF1

rmm

rmm(1)							      General Commands Manual							    rmm(1)

NAME

       rmm - remove messages (only available within the message handling system, mh)

SYNOPSIS

       rmm [+folder] [msgs] [-help]

OPTIONS

       Prints a list of the valid options to this command.

       The default settings for this command are:

       +folder defaults to the current folder msgs defaults to the current message

DESCRIPTION

       The rmm command deletes the current message from the current folder.

       You can specify messages and folders other than the current ones by using the +folder and msgs arguments.

       The current message is not changed by rmm, so a next will advance to the next message in the folder as expected.

       If you have defined a component rmmproc: in your file, then instead of simply renaming the message file, rmm will call the named program to
       delete the file.

       The rmm command removes messages by renaming the message files with a preceding comma. Many sites consider files that start with a comma to
       be a temporary backup, and arrange for cron(8) to remove such files once a day.

PROFILE COMPONENTS

       Path: To determine your Mail directory

       rmmproc: Program to delete the message

FILES

       The user profile.

SEE ALSO

       rmf(1)

																	    rmm(1)
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