Linux 에서 Path 지정하기 (Original page http://www.cyberciti.biz/faq/unix-linux-adding-path/)

UNIX / Linux: Set your PATH Variable Using set or export Command

Finding out your current path

 
echo "$PATH"
 

OR

 
printf "%s\n" "$PATH"
 

How do I modify my path?

Bash, Sh, Ksh shell syntax to modify $PATH

If you are using bash, sh, or ksh, at the shell prompt, type:

## please note 'PATH' is CASE sensitivity and must be in UPPERCASE ##
export PATH=$PATH:/path/to/dir1
export PATH=$PATH:/path/to/dir1:/path/to/dir2
 

OR

## please note 'PATH' is CASE sensitivity and must be in UPPERCASE ##
PATH=$PATH:/path/to/dir1; export PATH
 

Tcsh or csh shell syntax to modify $PATH

If you are using tcsh or csh, shell enter:

 ## please note 'path' is case sensitivity and must be in lowercase ##
set path = ($path /path/to/dir1)
set path = ($path /path/to/dir1 /path/to/dir2)
 

OR

## please note 'PATH' is CASE sensitivity and must be in UPPERCASE ##
setenv PATH $PATH:/path/to/dir1
setenv PATH $PATH:/path/to/dir1:/path/to/dir2
 

To make these changes permanent, add the commands described above to the end of your~/.profile file for sh and ksh shell, or ~/.bash_profile file for bash shell:

## BASH SHELL ##
echo 'export PATH=$PATH:/usr/local/bin'  >> ~/.bash_profile
 

KSH/sh shell user try:

## KSH / SH SHELL ##
echo 'export PATH=$PATH:/usr/local/bin'  >> ~/.profile
 

In this final example add /usr/local/bin/ and /scripts/admin/ to your path under csh / tcsh shell, enter:

 
set path = ($path /usr/local/bin /scripts/admin)
 

OR

 
setenv PATH $PATH:/usr/local/bin:/scripts/admin
 

To make these changes permanent, add the commands described above to the end of your~/.cshrc file:

 
echo 'set path = ($path /usr/local/bin /scripts/admin)'  >> ~/.cshrc
 

OR

 
echo 'setenv PATH $PATH:/usr/local/bin:/scripts/admin'  >> ~/.cshrc
 

To verify new path settings, enter:
$ echo $PATH