A question on PATH

[satimis]

Hi folks,

BLFS 6.1

On running following command
# echo $PATH

/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:.

Which file shall I edit to change it as;
/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/X11R6/bin

Please advise. TIA

BR
satimis

[RustamB]

To set PATH var you may want to add the following line to your .bashrc file in your home directory (or to /root directory if you want this PATH to be available to all users)

export PATH=$PATH:/add/your/path

[satimis]

Hi RustamB,

Tks for your advice. However I can't understand follows;

1)
On FC3 Host
# echo $PATH

/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/satimis/bin

# cat /root/.bash_profile

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH
unset USERNAME

How can "PATH=$PATH:$HOME/bin" showed "/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/satimis/bin" on running "echo $PATH"?


2)
BLFS 6.1
# echo $PATH

/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:.

# cat /mnt/lfs/root/.bash_profile

<snip>
append &#40;&#41; &#123;
  # First remove the directory
  local IFS='&#58;'
  local NEWPATH
  for DIR in $PATH; do
     if &#91; "$DIR" != "$1" &#93;; then
       NEWPATH=$&#123;NEWPATH&#58;+$NEWPATH&#58;&#125;$DIR
     fi
  done

  # Then append the directory
  export PATH=$NEWPATH&#58;$1
&#125;

if &#91; -f "$HOME/.bashrc" &#93; ; then
        source $HOME/.bashrc
fi

if &#91; -d "$HOME/bin" &#93; ; then
  append $HOME/bin
fi

unset append

# End ~/.bash_profile

The path is not showed there. How "echo $PATH" displayed "/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:." ?

Please advise. TIA

BR
satimis

[satimis]

Hi RustamB,

Tks for your advice. However I can't understand follows;

1)
On FC3 Host
# echo $PATH

/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/satimis/bin

# cat /root/.bash_profile

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH
unset USERNAME

How can "PATH=$PATH:$HOME/bin" showed "/usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/bin:/usr/bin:/bin:/usr/X11R6/bin:/home/satimis/bin" on running "echo $PATH"?


2)
BLFS 6.1
# echo $PATH

/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:.

# cat /mnt/lfs/root/.bash_profile

<snip>
append &#40;&#41; &#123;
  # First remove the directory
  local IFS='&#58;'
  local NEWPATH
  for DIR in $PATH; do
     if &#91; "$DIR" != "$1" &#93;; then
       NEWPATH=$&#123;NEWPATH&#58;+$NEWPATH&#58;&#125;$DIR
     fi
  done

  # Then append the directory
  export PATH=$NEWPATH&#58;$1
&#125;

if &#91; -f "$HOME/.bashrc" &#93; ; then
        source $HOME/.bashrc
fi

if &#91; -d "$HOME/bin" &#93; ; then
  append $HOME/bin
fi

unset append

# End ~/.bash_profile

The path is not showed there. How can "echo $PATH" display "/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:." ?

Please advise. TIA

BR
satimis

[RustamB]

The path is not showed there. How can "echo $PATH" display "/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:." ?

PATH is also set somewhere else, but I'm not sure where and why.

When you do the following

export PATH=$PATH:/your/path

you ADD /your/path to existing PATH variable. If you want to entirely replace it with your PATH variable then run

export PATH=/your/path

[satimis]

Hi RustamB,

Tks for your advice.

There are 3 different paths;

1)
As User
bash-3.00$ echo $PATH

/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin

2)
As "su"
bash-3.00$ su
Password:
root@localhost:/home/satimis# echo $PATH

/usr/gnu/bin:/usr/local/bin:/bin:/usr/bin:.

3)
As "su -"
Password:
root@localhost:~# echo $PATH

/usr/local/sbin:/usr/local/bin:/bin:/usr/bin:/sbin:/usr/sbin:/usr/X11R6/bin

Which of them is the correct path? TIA

BR
satimis

[RustamB]

There is no such a thing as correct path. The correct is the one, when all your programs work fine. So I can't say which one is correct for your If you are not sure what to include in your PATH, use as much values as you can Unused paths will not do any harm, so I would reccommend you just add you desired path values to existing PATH. Like this:

export PATH=$PATH:/qqq/www/eee

add this line in /yourhomedir/.bashrc file or in /root/.bashrc.

[satimis]

Hi RustamB

export PATH=$PATH:/qqq/www/eee

add this line in /yourhomedir/.bashrc file or in /root/.bashrc.

root@localhost:/home/satimis# cat /home/satimis/.bashrc

cat: /home/satimis/.bashrc: No such file or directory

root@localhost:/home/satimis# locate bashrc

/root/.bashrc

/home/satimis/./bashrc seems not existing. But bash-3.00$ echo $PATH

/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin

has output.

What shall i do, creating a new empty file? OR copy /root/.bashrc to there?

root@localhost:/home/satimis# cat /root/.bashrc

# Begin ~/.bashrc
# Written for Beyond Linux From Scratch
# by James Robertson <jameswrobertson@earthlink.net>

# Personal aliases and functions.

# Personal environment variables and startup programs should go in
# ~/.bash_profile.  System wide environment variables and startup
# programs are in /etc/profile.  System wide aliases and functions are
# in /etc/bashrc.

if &#91; -f "/etc/bashrc" &#93; ; then
        source /etc/bashrc
fi

# End ~/.bashrc

Shall I add the line immediately above "End ~/.bashrc"

BR
satimis

[RustamB]

Create new file ".bashrc" in your home dir and add that command line there.

[satimis]

Create new file ".bashrc" in your home dir and add that command line there.

So the file contains only one line?

Tks

BR
satimis