Git pull for many repository directories
We have a projects directory that contains many git repository directories: ~me/projects/foo
~me/projects/goo
~me/projects/hoo
Solution 1: one by one
A novice solution is to change into each directory one by one like this: cd ~me/projects/foo && git pull
cd ~me/projects/goo && git pull
cd ~me/projects/hoo && git pull
Solution 2: find | while loop
A better solution is to use the shell's find command and pipe the results to a simple loop like this: find ~me/projects/ \
| while read line; do cd $line && git pull; done
Solution 3: find | xargs dirname | while loop
To find repository directories and filter out non-repostitory directories, we can use find with options, pipe to the xargs command and dirname command, then pipe to the while loop:
find ~me/projects/ -type d -name .git \
| xargs -n 1 dirname \
| while read line; do cd $line && git pull; done
See Git: How to find git repository directories
Bonus: show progress with "sort" and "echo"
To show progress as the loop runs, we can use the sort command and echo command in the loop like this: find ~me/projects/ -type d -name .git \
| xargs -n 1 dirname \
| sort \
| while read line; do echo $line && cd $line && git pull; done