Why Do You Need the Explicit Pathname to Execute? Post: 302737379

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Top Forums UNIX for Dummies Questions & Answers Why Do You Need the Explicit Pathname to Execute? Post 302737379 by sudon't on Wednesday 28th of November 2012 11:42:29 PM

11-29-2012

Registered User

Quote:

Originally Posted by Corona688

That is a terrible idea. Never put relative paths inside your PATH. At best it's a security risk, at worst, it will cause things to actually fail. The shell tries to cache what programs are available when it runs, but this will not work right when things in PATH are relative. Everything inside PATH must be an absolute path!

Second, there's a reason the current directory is not included for running executables. It's not "missing", it's on purpose. It's to prevent people from dumping malign files into a folder you frequent and having you accidentally run them.

Ok, I kinda get that it might be about having executables in permissions protected directories, but if all you need to do is use the absolute pathname, it doesn't seem like much security. Especially if it's just a dot-slash. Of course, it forces you to make sure executing it is what you want to do.
So you guys think that's what the deal is?

---------- Post updated at 11:42 PM ---------- Previous update was at 11:41 PM ----------

Quote:

Originally Posted by bipinajith

I think the reason is because current directory is missing in the PATH variable value. Add current directory and retry:-

Code:

export PATH="$PATH:."

I have no need to put these practice scripts I'm doing in my PATH. It's not an issue - just something I was wondering about. If I ever write something useful, I'll stick it in /usr/local/bin Smilie

I should have mentioned - I'm running Mac OS, bash shell.

Last edited by sudon't; 11-29-2012 at 12:54 AM.. Reason: mention OS

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xdg-user-dirs-update

XDG-USER-DIRS-UPD(1)						   User Commands					      XDG-USER-DIRS-UPD(1)

NAME

       xdg-user-dirs-update - Update XDG user dir configuration

SYNOPSIS

       xdg-user-dirs-update [OPTION...] [--set NAME PATH...]

DESCRIPTION

       xdg-user-dirs-update updates the current state of the users user-dirs.dir. If none existed before then one is created based on the system
       default values, or falling back to the old non-translated filenames if such directories exists. The list of old directories used are:
       ~/Desktop, ~/Templates and ~/Public.

       If an old configuration exists it is updated with any new default directories. Additionally, any configured directories that point to
       non-existing locations are reset by pointing then to the users home directory. This typically happens when the users removed the directory,
       so they likely don't want to use it anymore.

       On the first run a user-dirs.locale file is created containing the locale that was used for the translation. This is used later by gui
       tools like xdg-user-dirs-gtk-update to detect if the locale was changed, letting you to migrate from the old names.

       xdg-user-dirs-update is normally run automatically at the start of a user session to update the XDG user dirs according to the users
       locale.

OPTIONS

       The following options are understood:

       --help
	   Print help output and exit.

       --force
	   Update existing user-dirs.dir, but force a full reset. This means: Don't reset nonexisting directories to HOME, rather recreate the
	   directory. Never use backwards compatible non-translated names. Always recreate user-dirs.locale.

       --dummy-output PATH
	   Write the configuration to PATH instead of the default configuration file. Also, no directories are created.

       --set NAME PATH
	   Sets the XDG user dir with the given name.

	   NAME should be one of the following:
	       DESKTOP
	       DOWNLOAD
	       TEMPLATES
	       PUBLICSHARE
	       DOCUMENTS
	       MUSIC
	       PICTURES
	       VIDEOS

	   PATH must be an absolute path, e.g.	$HOME/Some/Directory.

FILES

       The XDG user dirs configuration is stored in the user-dirs.dir file in the location pointed to by the XDG_CONFIG_HOME environment variable.

ENVIRONMENT

       The XDG_CONFIG_HOME environment variable determines where the user-dirs.dirs file is located.

SEE ALSO

       xdg-user-dir(1), user-dirs.dirs(5), user-dirs.defaults(5), user-dirs.conf(5).

XDG
															      XDG-USER-DIRS-UPD(1)