update-all-repos.sh

#!/bin/bash

# Finds all git repos inside directories specified in command line or current
# directory if no path specified and updates them all.
# Uses fetch + ff merge.
# Failed updates are marked by 'FAILED-git-update.txt' file left in git dir
# and dirs specified in command line or current dir if not specified.

# Can be run as cron job, example (includes sleep to randomize startup time):
# 0 */3 * * *	$USER	/bin/sleep $(shuf -i 0-300 -n 1) && /bin/bash $HOME/git/update-all-repos.sh $HOME/git/

DIRECTORY=()

for P in "$@"
do
    DIRECTORY+=("$P")
done


if [ $# -le 0 ] 
then
    DIRECTORY=(.)
fi

for D in "${DIRECTORY[@]}"
do
    echo -e "$D"
done
# read -r

for D in "${DIRECTORY[@]}"
do
    cd "$D" || continue
    # Cleanup previous failed flag file.
    rm 'FAILED-git-update.txt'
    # Two expressions: '-a' assumed
    # Can be called only on some repos by matching "path": "-path '*repo/.git'"
    find "$D" -name '.git' -type d -printf "\033[1m######\n# %80h\n\033[0m" \
        \( -execdir git fetch --all --tags \;\
        -a -execdir git merge --ff-only \;\
        -a -execdir rm -f 'FAILED-git-update.txt' \;\
        -o -execdir touch 'FAILED-git-update.txt' \;\
        -a -exec touch 'FAILED-git-update.txt' \;\
        -a -printf "\033[1;31m######\n# ERROR\033[0m\n" \)
done

for D in "${DIRECTORY[@]}"
do
    date -Iseconds > "$D"/git-last-update.txt
done
echo -e "\033[1m######\n# DONE\033[0m"