Setting PATH variable - Revision history

Marc at 13:55, 7 December 2008

2008-12-07T13:55:54Z

Marc at 13:44, 7 December 2008

2008-12-07T13:44:23Z

Marc at 13:43, 7 December 2008

2008-12-07T13:43:04Z

Marc at 13:41, 7 December 2008

2008-12-07T13:41:22Z

Marc at 13:41, 7 December 2008

2008-12-07T13:41:04Z

Marc: New page: '''PATH''' environment variable contains a list directories used by your operating system to search for executable files. When running commands in a terminal (MSYS for Windows or a classic...

2008-12-07T13:39:22Z

New page: '''PATH''' environment variable contains a list directories used by your operating system to search for executable files. When running commands in a terminal (MSYS for Windows or a classic...

New page

'''PATH''' environment variable contains a list directories used by your operating system to search for executable files. When running commands in a terminal (MSYS for Windows or a classical Linux terminal) their names are directly translated to real executable files by searching through all directories of the PATH variable for a matching file name. For instance, if you type ''geopsy'', it must be translated into ''/usr/local/sesarray/bin/geopsy'' or ''C:\Program Files\sesarray\bin\geopsy.exe''. Hence ''/usr/local/sesarray/bin'' or ''C:\Program Files\sesarray\bin'' must be listed in your '''PATH''' variable.

To get the current contents of the '''PATH'''

echo $PATH

A possible output can be:

/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin

Which is the default list of system paths.

To add new custom paths, you can add a new line in your [[Wikipedia:Shell_(computing)|shell]] configuration file.
There are several types of shell, to determine yours:

echo $SHELL

Which output can be
* /bin/bash
* /bin/tcsh
* /bin/csh

If your shell is ''bash'', edit the file ''~/.bashrc'' or ''~/.profile'' (Mac OS X)

export PATH=/new/path/for/executable/now/in/your/path:$PATH

If your shell is ''csh'' or ''tcsh'', edit the file ''~/.login''

setenv PATH /new/path/for/executable/now/in/your/path:$PATH

To commit these changes directly to the current terminal, you must source it:

source ~/.bashrc

Do NOT forget the last part of the line which recall the current content of '''PATH'''. If you get this error for all commands you type, you probably forgot to add '':$PATH'' at the end.

<any command name>: No such file or directory

Every time you will start a new terminal you will always have the same problem. To solve it you must edit your shell configuration file. You can still access to all commands by there absolute names:

/usr/bin/vi ~/.bashrc

To locate an executable (e.i. to make a request using current '''PATH''' variable), use command ''which''

which geopsy

@@ Line 3: / Line 3: @@
 For instance, if you type ''geopsy'', it translates to:
 * ''/usr/local/sesarray/bin/geopsy'' under Linux
-* ''C:\Program Files\sesarray\bin\geopsy.exe''
+* ''C:\Program Files\sesarray\bin\geopsy.exe'' under Windows
 Hence ''/usr/local/sesarray/bin'' or ''C:\Program Files\sesarray\bin'' must be listed in your '''PATH''' variable.

← Older revision		Revision as of 13:41, 7 December 2008
Line 1:		Line 1:
−	'''PATH''' environment variable contains a list directories used by your operating system to search for executable files. When running commands in a terminal (MSYS for Windows or a classical Linux terminal) their names are directly translated to real executable files by searching through all directories of the PATH variable for a matching file name. For instance, if you type ''geopsy'', it ~~must be translated into~~ ''/usr/local/sesarray/bin/geopsy'' or ''C:\Program Files\sesarray\bin\geopsy.exe''. Hence ''/usr/local/sesarray/bin'' or ''C:\Program Files\sesarray\bin'' must be listed in your '''PATH''' variable.	+	'''PATH''' environment variable contains a list directories used by your operating system to search for executable files. When running commands in a terminal (MSYS for Windows or a classical Linux terminal) their names are directly translated to real executable files by searching through all directories of the PATH variable for a matching file name.
		+
		+	For instance, if you type ''geopsy'', it translates to:
		+	* ''/usr/local/sesarray/bin/geopsy'' under Linux
		+	* ''C:\Program Files\sesarray\bin\geopsy.exe''
		+
		+	Hence ''/usr/local/sesarray/bin'' or ''C:\Program Files\sesarray\bin'' must be listed in your '''PATH''' variable.

	To get the current contents of the '''PATH'''		To get the current contents of the '''PATH'''

@@ Line 6: / Line 6: @@
 Hence ''/usr/local/sesarray/bin'' or ''C:\Program Files\sesarray\bin'' must be listed in your '''PATH''' variable.
 To get the current contents of the '''PATH'''
@@ Line 26: / Line 28: @@
 * /bin/tcsh
 * /bin/csh
 If your shell is ''bash'', edit the file ''~/.bashrc'' or ''~/.profile'' (Mac OS X)
@@ Line 38: / Line 42: @@
   source ~/.bashrc
 Do NOT forget the last part of the line which recall the current content of '''PATH'''. If you get this error for all commands you type, you probably forgot to add '':$PATH'' at the end.

@@ Line 29: / Line 29: @@
 If your shell is ''bash'', edit the file ''~/.bashrc'' or ''~/.profile'' (Mac OS X)
-   export PATH=/new/path/for/executable/now/in/your/path:$PATH
+   export PATH=/new/path/for/executables/now/in/your/path:$PATH
 If your shell is ''csh'' or ''tcsh'', edit the file ''~/.login''
-   setenv PATH /new/path/for/executable/now/in/your/path:$PATH
+   setenv PATH /new/path/for/executables/now/in/your/path:$PATH
 To commit these changes directly to the current terminal, you must source it:

@@ Line 43: / Line 43: @@
   <any command name>: No such file or directory
-Every time you will start a new terminal you will always have the same problem. To solve it you must edit your shell configuration file. You can still access to all commands by there absolute names:
+Every time you will start a new terminal you will always have the same problem. To solve it you must edit your shell configuration file. You can still access to all commands by their absolute names:
   /usr/bin/vi ~/.bashrc