Updating bashrc

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And because any programs you run from a bash prompt are called by bash, the new path is in force for anything you run from the bash prompt.The bottom line is that to add a new directory to the path, you must append or prepend the directory to the $PATH environment variable within a script included in the shell, and you must export the I can't speak for other distributions, but Ubuntu has a file, /etc/environment, that is the default search path for all users.That information, along with your comments, will be governed by DISQUS’ privacy policy.By commenting, you are accepting the IBM commenting guidelines and the DISQUS terms of service.and Remove duplicate $PATH entries with awk command to avoid adding duplicates or remove them. PATH is just an environment variable, and if you want to add to the PATH, you have to rebuild the variable with exactly the contents you want.That is, what you give as an example to question 2 is exactly what you want to do, unless I'm totally missing the point of the question. I have a generic profile that I install on every machine I work on that looks like this, to accommodate for potentially-missing directories: export PATH=/opt/bin:/usr/local/bin:/usr/contrib/bin:/bin:/usr/bin:/usr/sbin:/usr/bin/X11 # add optional items to the path for bindir in $HOME/local/bin $HOME/bin; do if [ -d $bindir ]; then PATH=$PATH:$ fi done Inclusion basically incorporates the "called" script in the "calling" script. So it's effective inside the "calling" script or program.

I need to add the following lines to the end of .bashrc file in Ubuntu.

file, is there some refresh command to be able immediately use the new aliases or functions without closing the terminal (in my case xfce4-terminal with a few tabs open, many files open and in the middle of the work)?

"you will have to run this in every instance." - Note that zsh users can set TMOUT and TRAPALRM appropriately to stat and (if necessary) re-source ~/.zshrc once per second, or at any other reasonable interval.

But of course, it's not effective in any programs or scripts called by the calling program.

To make it effective all the way down the call chain, you must follow the setting of the environment variable with an export command.

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