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I need to add the following lines to the end of .bashrc file in Ubuntu. How can I add these lines automatically using a script. If I run the script, then it automatically inserts the lines at the end of .bashrc file.

export APP="/opt/tinyos-2.x/apps"
export TOS="/opt/tinyos-2.x/tos"
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up vote 12 down vote accepted

Use the echo command to append lines to the .bashrc script

So in your script use these lines

echo 'export APP=/opt/tinyos-2.x/apps' >> ~/.bashrc 

echo  'export TOS=/opt/tinyos-2.x/tos' >> ~/.bashrc 

Make sure to use >> (append), if you use a single > you will overwrite the file.

~/.bashrc indicates .bashrc is in your home directory

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