91

Is it possible to coerce bash to reload the .profile file without logging out and back in again?

117

This should work for the current terminal:

. ~/.profile

. is a bash builtin and a synonym for source, see man bash:

. filename [arguments]
source filename [arguments]
     Read and execute commands from filename in the current shell environment (…).

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  • 24
    It will be effective only in the current terminal. – enzotib Aug 29 '11 at 14:14
  • @enzotib Is there a way to work around that? – Matty Aug 29 '11 at 14:20
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    @Matty: no, to make the changes visible to the whole graphical environment, you can only restart the session – enzotib Aug 29 '11 at 14:22
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    The only issue with this is if you remove something from path it would not take effect until you restart – Aras Sep 12 '16 at 19:44
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    @Aras makes an IMPORTANT POINT that deserves expansion: If something is removed from ~/.profile, that change will not take effect after . ~/.profile reload. For example, add a function to ~/.profile: function externalip () { curl http://ipecho.net/plain; echo; }, then ~/.profile - IT WORKS. Now remove that function from ~/.profile, then . ~/.profile again. The function is still available - only restarting (log out & in) will remove it. – Seamus Mar 26 '19 at 1:17
13

If you don't want to start a new shell but execute the script in the current shell, you source it:

source script_name.sh

source = .

The Bash source built-in is a synonym for the Bourne shell . (dot) command.

courtesy - tldp.org

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