Question

1

Expand $PATH problem $HOME/bin is set twice

rated 0 times [ 1] [ 0] / answers: 1 / hits: 791 / 2 Years ago, sat, march 26, 2022, 5:42:09

I'm using in xubuntu bionic as shell bash.

I'll try to expand my $PATH for my user over $HOME/.profile.

if [ -d "$HOME/bin" ] ; then

    PATH="$HOME/bin:$PATH"

fi



if [ -d "$HOME/.local/bin" ] ; then

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

fi

The result is a little bit unexpected.

echo $PATH

/home/alex/.local/bin:/home/alex/bin:/home/alex/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games

$HOME/bin is set twice. How can I avoid it?

In $HOME/.bashrc is nothing declared.

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eaderitable

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1 Year ago

answered 2 Years ago tiowift · Accepted Answer

I use Stephen Collyer's "Bash Path Functions" (see his article Stephen Collyer's article in Linux Journal). It permits me to use the "colon separated list" as a datatype in shell programming. For example, I can produce a list of all the directories in the current directory by:

dirs="";for i in * ; do if [ -d $i ] ; then addpath -p dirs $i; fi; done

Then, listpath -p dirs produces a list.

Using uniqpath and listpath (from bash_path_funcs), one could simply:

walt@bat:~(0)$ PATH=$HOME/bin:$PATH

+walt@bat:~(0)$ listpath

/home/walt/bin

/home/walt/bin

/usr/local/sbin

/usr/local/bin

/usr/sbin

/usr/bin

/sbin

/bin

/usr/games

/usr/local/games

/snap/bin

/home/walt/rpi/tools/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin



+walt@bat:~(0)$ uniqpath -p PATH

+walt@bat:~(0)$ listpath

/home/walt/bin

/usr/local/sbin

/usr/local/bin

/usr/sbin

/usr/bin

/sbin

/bin

/usr/gameswalt@bat:~(0)$ PATH=$HOME/bin:$PATH