# What is PATH environment variable and how to add it

I just installed picc-9.82.9453-linux.run from Microchip website, and at the end it asked me

==> NOTE: You may wish to add the following
/usr/hitech/picc/9.82/bin

What does it mean?

I also need to add this to the environment path

NOTE: You may wish to add the following
/usr/hitech/picc-18/pro/9.66/bin

-
PATH is a global operating system variable that contains names of files that are to be executed without specyfing the whole path to them. For example You can just write startx to start graphic environemnt instead of /bin/some other folders/startx –  Misery May 24 '12 at 15:56
After editing .profile restart your system to get the changes to take effect. (Perhaps there is a way around this, but restarting certainly works) –  thn May 30 '13 at 8:42

Partial duplicate: How to add a directory to my path?

PATH is an enviroment variable. Basically, it tells your machine were to search for programs, so when you run your picc program, you can just do this:

picc


/usr/hitech/picc/9.82/bin/picc

To add a directory to your $PATH, follow any one of the below. 1. simply edit ~/.profile gedit ~/.profile  find the following line: PATH="$HOME/bin:$PATH"  and change it to: PATH="$HOME/bin:$PATH:/usr/hitech/picc/9.82/bin"  2. Run the below command in terminal export PATH=$PATH:/usr/hitech/picc/9.82/bin

i do not clearly understand what do i edited /etc/profile but the link in your answer says something like this if [ -d "$HOME/bin" ] ; then PATH="$PATH:$HOME/bin" fi  what do do with this? – ths May 24 '12 at 16:09 There you go. I updated the answer. – reverendj1 May 24 '12 at 16:18 what to do if i need to add more than 1 path? – ths May 24 '12 at 16:32 Just keep adding a colon, then your new path to that string. i.e. PATH="$HOME/bin:\$PATH:/usr/hitech/picc/9.82/bin:/my/new/path" –  reverendj1 May 24 '12 at 16:37