Sync Gists

sync-gists.sh

#!/usr/bin/env bash
#
# sync-gists.sh
#
# Allows github gists to be edited locally or on gist.github.com and syncs changes between them.
# Currently gist SHA-1 hashes must be manually added to a file called gist_ids. An SSH key should
# be configured on github.com for ease of use.
#
# Format of $GIST_FILE file is one SHA-1 hash per line.
#
# N. P. O'Donnell, 2021


GIST_FILE=gist_ids

# Add, commit, pull, and push.

temp_gist_file=$(mktemp)
gists=$(for e in $(ls -1); do [[ -d $e && -d $e/.git ]] && echo -n "$e "; done;)
cp $GIST_FILE $temp_gist_file
echo $gists | sed -e 's| |\n|g' >> $temp_gist_file

for gist_id in $(cat $temp_gist_file | sort | uniq); do
    if [ -d $gist_id ]
    then
        echo "Pulling, committing and pushing $gist_id..." 
        git -C $gist_id add . \
            && git -C $gist_id commit --allow-empty-message -m ""
            git -C $gist_id pull --rebase
            
            if [ $? == "1" ]
                then
                echo "*** PLEASE FIX MERGE CONFLICTS AND RERUN SCRIPT ***"
                echo "Might be a good idea to cd into $gist_id"
                exit 1 
            fi
            
            git -C $gist_id push
    else
        echo "Cloning $gist_id..."
        git clone git@gist.github.com:$gist_id.git
    fi
done

# Update gist file.

> $temp_gist_file

for e in $(ls -1); do 
    [[ -d $e && -d $e/.git ]] && echo $e >> $temp_gist_file
done

mv $temp_gist_file $GIST_FILE