CODEWITHSUNDEEP
linuxbash
Vivek Goel
Vivek Goel

Reputation: 24140

How to include relative script source file bashrc

I have multiple bash file. I want to write a master bash file which will include all required bash file in current directory. I tried like this 

#!/bin/bash
HELPER_DIR=`dirname $0`
.$HELPER_DIR/alias

But I when I put following line in my $HOME/.bashrc 

if [ -f /home/vivek/Helpers/bash/main.bash ]; then
    . /home/vivek/Helpers/bash/main.bash
fi

I am getting error no such file ./alias. File alias is there. How can I include relative bash file ?

Upvotes: 3

Views: 2632

Answers (3)

Voziv
Voziv

Reputation: 69

$( dirname "${BASH_SOURCE[0]}" ) returns . if you invoke the script from the same directory or a relative path if you call it using a relative path such as ../myscript.sh.

I use script_dir=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd ) to get the directory that the script is in.

Here's an example script to test this functionality:

#!/bin/bash
# This script is located at /home/lrobert/test.sh

# This just tests the current PWD
echo "PWD: $(pwd)"


# Using just bash source returns the relative path to the script
# If called from /home with the command 'lrobert/test.sh' this returns 'lrobert'
bash_source="$(dirname "${BASH_SOURCE[0]}")"
echo "bash_source: ${bash_source}"


# This returns the actual path to the script
# Returns /home/lrobert when called from any directory
script_dir=$( cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
echo "script_dir: ${script_dir}"

# This just tests to see if our PWD was modified
echo "PWD: $(pwd)"

Upvotes: 1

pankar
pankar

Reputation: 1701

You need to leave a space after the "dot"

. $HELPER_DIR/alias

Upvotes: 1

Igor Chubin
Igor Chubin

Reputation: 64563

Use $( dirname "${BASH_SOURCE[0]}" ) instead.

I added these two lines two my ~/.bashrc:

echo '$0=' $0
echo '$BASH_SOURCE[0]=' ${BASH_SOURCE[0]}

and started bash:

$ bash
$0= bash
$BASH_SOURCE[0]= /home/igor/.bashrc

There is a difference between $0 and $BASH_SOURCE when you start a script with source (or .) or in ~/.bashrc.

Upvotes: 3

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