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Setting permanent PATH

asked 2014-04-06 04:59:58 -0600

Oded gravatar image

updated 2014-04-17 02:49:06 -0600

Ahmad Samir gravatar image

Hello, i was trying to add a specific path to the PATH enviroment variable. I read some answers about this, but didnt succeed. Right now, although the file "/etc/profiles" contains the desired path, when i type:

# echo $PATH

i don't see it. i was looking to add it to the files "/etc/profile" and "/etc/bashrc" as well, but didnt find where.

Please help, Oded

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So, how do i set a permanent change to PATH?

Oded gravatar imageOded ( 2014-04-06 07:53:38 -0600 )edit

If you want to change the PATH env var for just one user, revert the changes you did in /etc/profile and instead edit ~/.bash_profile.

By default you should find these two lines in ~/.bash_profile:

PATH=$PATH:$HOME/.local/bin:$HOME/bin

export PATH

for example in this case $HOME/bin is added to the PATH env var. Note that you'll need to log out / log in for the changes to take effect in bash sessions (or you can source ~/.bash_profile manually until you log out / log in).

Ahmad Samir gravatar imageAhmad Samir ( 2014-04-06 11:02:35 -0600 )edit

Thanks for your answer, but i think i don't have this file. Anyway, not in /ect and not in / And, i would like to set the PATH env var to all users.

Oded gravatar imageOded ( 2014-04-07 02:23:34 -0600 )edit

@Ahmad Samir - looks like you have all the info for a very thorough answer!

randomuser gravatar imagerandomuser ( 2014-04-17 00:29:21 -0600 )edit

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answered 2014-04-07 03:00:08 -0600

Ahmad Samir gravatar image

updated 2014-04-17 02:48:40 -0600

~ is your home directory, so ~/.bash_profile is in your home dir and it's created by default when you create a user account.

To add a custom path to the PATH env var for all users, you can edit /etc/profile and/or /etc/bashrc but I think it's better to create a file under /etc/profile.d/ e.g. /etc/profile.d/file.sh (the name doesn't matter but the extension must be .sh), and put this in it:

PATH=$PATH:/path/to/wherever
export PATH
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Thanks! Even if an answer is covered in more broad terms by another, it can be helpful for people looking for a specific answer to have some overlap.

randomuser gravatar imagerandomuser ( 2014-04-17 14:14:25 -0600 )edit
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answered 2015-01-17 14:00:27 -0600

this post is marked as community wiki

This post is a wiki. Anyone with karma >750 is welcome to improve it.

Ahmad Samir is right for the following reasons: 1. Security. 2. It is cleaner because it promotes modularity. However to activate and test immediately without loging out you can make the settings available to the shell environment by sourcing as follows:

source /etc/profile.d/allusersoath.sh or using sh interpreter sh /etc/profile.d/allusersoath.sh or using bash interpreter bash /etc/profile.d/allusersoath.sh or use . command . /etc/profile.d/allusersoath.sh it will execute the script in the current shell without forking a sub shell. In other words, this executes the commands specified in the scriptfile in the current shell, and prepares the environment for you.

Cheers Robinson G. G.

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answered 2016-08-01 12:39:20 -0600

ptrck4193 gravatar image

As indicated by /etc/bashrc and /etc/profile, create custom.sh in /etc/profile.d/ by executing

  1. touch /etc/profile.d/custom.sh

    and
    
  2. chmod +x /etc/profile.d/custom.sh

This file is not a sytem file such as /etc/bashrc, but customed (hence the name) to the user such as ~/.bashrc. Enter into this file the following (not my actual file, just a demonstration)

>  if shopt -q login_shell; then
>    printf '%s %s\n  %s\n' 'Loading /etc/profile.d/custom.sh'\
>      '(See /etc/bashrc or /etc/profile)...'\
>      'Invoking interactive login shell...'
>    if [ "$TERM" = "linux" ]; then
>      printf '%b %s%b\n' "\E[32mHi $USER from Virtual Console" `tty` "\E[0m"
>    fi
>    printf '%s:\n' 'Set following ENV variable(s)'
>    printf '  %s\n' '1. SAMPLE_VAR1'
>    SAMPLE_VAR1="From file /etc/profile.d/custom.sh, a sample variable."
>  else
>    printf '%s %s\n  %s\n' 'Loading /etc/profile.d/custom.sh'\
>      '(See /etc/bashrc or /etc/profile)...'\
>      'Invoking interactive non-login shell...'
>    printf '%s:\n' 'Set following ENV variable(s)'
>    printf '%s\n' '1. SAMPLE_VAR2'
>    SAMPLE_VAR2="From file /etc/profile.d/custom.sh, a sample variable."
>    if my_bin=$(echo $PATH | grep "$HOME/bin"); then
>      printf '%s\n' "Path to \"${my_bin##*:}\" already set."
>    else
>      PATH=$PATH:$HOME/bin
>    fi
>  fi

Into the files

  1. /etc/bashrc (system; interactive non-login; functions and aliases)
  2. /etc/profile (system; interactive login; environment variables)
  3. ~/.bashrc (user; interactive non-login; functions and aliases)
  4. ~/.bash_profile (user; interactive login; environment variables)

enter, for example,

"# My Section"

"printf '%s\n' 'Loading /etc/bashrc...'"

"# Done My Section"

Now

  1. CTRL+ALT+F3 for text mode (Virtual Console)
  2. Open new terminal in graphical mode thereby starting a new bash session (pseudo-terminal)
  3. In the pseudo-terminal, enter su - (Super-user: if you have the privelege)

Caveat: don't put environment variables into ~/.bashrc; use custom.sh.

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Asked: 2014-04-06 04:59:58 -0600

Seen: 43,022 times

Last updated: Jan 17 '15