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Top Forums Shell Programming and Scripting [ ! -e a.log ] & [ ! -f a.log ] difference b/w these two Post 302269769 by Lakris on Thursday 18th of December 2008 03:29:35 PM
Old 12-18-2008
Hi,
"Everything is a file..."
but not everything is a regular file.
-e return true (and ! reverse the result) if there exist something named a.log
-f return true (and ! reverse the result) if there is something named a.log and is a regular file,such as a text file or a binary, what most people think of as normal files.


Code:
lakris@ubuntu:~$ [ -e /dev/audio ] && echo true
true
lakris@ubuntu:~$ [ -f /dev/audio ] && echo true
lakris@ubuntu:~$

/Lakris

Last edited by Lakris; 12-18-2008 at 04:32 PM.. Reason: clarification
 

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WHAT-PATCH(1)                                                 General Commands Manual                                                WHAT-PATCH(1)

NAME
what-patch - detect which patch system a Debian package uses SYNOPSIS
what-patch [options] DESCRIPTION
what-patch examines the debian/rules file to determine which patch system the Debian package is using. what-patch should be run from the root directory of the Debian source package. OPTIONS
Listed below are the command line options for what-patch: -h, --help Display a help message and exit. -v Enable verbose mode. This will include the listing of any files modified outside or the debian/ directory and report any additional details about the patch system if available. AUTHORS
what-patch was written by Kees Cook <kees@ubuntu.com>, Siegfried-A. Gevatter <rainct@ubuntu.com>, and Daniel Hahler <ubuntu@thequod.de>, among others. This manual page was written by Jonathan Patrick Davies <jpds@ubuntu.com>. Both are released under the GNU General Public License, version 3 or later. SEE ALSO
The Ubuntu MOTU team has some documentation about patch systems at the Ubuntu wiki: https://wiki.ubuntu.com/PackagingGuide/PatchSystems cdbs-edit-patch(1), dbs-edit-patch(1), dpatch-edit-patch(1) DEBIAN Debian Utilities WHAT-PATCH(1)
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