Μηνιαία αρχεία: Σεπτέμβριος 2017


Find all git repositories and perform a pull operation on them.

The following command will find all git projects in your home folder and perform a pull operation on them.

find ~ -name ".git" -type d -exec bash -c "echo '{}' && cd '{}'/.. && git pull" \;

The above command is based on finding the .git folders that exist in any clone of a git repository. Once a .git folder is found, it will navigate to its parent folder where it will perform the pull request.

Bonus – Automate the procedure using a cron job

The following entry in crontab allows us to periodically perform a pull request on all the cloned repositories that we have in a specific folder. Specifically, it will perform this operation once every five minutes.

*/5    *    *    *    *    cd /home/bytefreaks/Projects; find . -name ".git" -type d -exec bash -c "echo '{}' && cd '{}'/.. && git pull" \; &> /tmp/bf.git.log

Please note that it would be easier to use an ssh key that does not have a password for this automation.
If you do not, the you will need to either pass the password via this configuration line (not recommended) or have a key agent running to provide the password for the key.
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Redirecting standard error (stderr)

The following command will redirect stderr to a different file than the one stdout is redirected to:

command >log.txt 2>errors.txt;

In case you want to redirect stderr to stdout (&1), and then redirect stdout to a file you can use the following setup:

command >mixed-log.txt 2>&1;

The following command will have the same effect as the previous one, the difference between them is the way they are implemented. This time we will redirect both the stdout and stderr to a file:

command &> mixed-log.txt;