Git – Page 2 – A nice guy's view on life

One to read: “My favourite Git commit”

2019-10-232019-10-23 2 Comments

One to read: “My favourite Git commit | fatbusinessman.com”

Oh wow. If ever you were looking for a reason to write expressive Git commits – this is the one to go for! Found via Jamie Tanner’s blog at https://www.jvt.me and well worth a 2 minute read!

How to quickly get the next SemVer for your app

2019-06-282023-09-06 JonTheNiceGuy 2 Comments

SemVer, short for Semantic Versioning is an easy way of numbering your software versions. They follow the model Major.Minor.Patch, like this 0.9.1 and has a very opinionated view on what is considered a Major “version bump” and what isn’t.

Sometimes, when writing a library, it’s easy to forget what version you’re on. Perhaps you have a feature change you’re working on, but also bug fixes to two or three previous versions you need to keep an eye on? How about an easy way of figuring out what that next bump should be?

In a recent conversation on the McrTech slack, Steven [0] mentioned he had a simple bash script for incrementing his SemVer numbers, and posted it over. Naturally, I tweaked it to work more easily for my usecases so, this is *mostly* Steven’s code, but with a bit of a wrapper before and after by me :)

#! /bin/bash RE='[^0-9]*$[0-9]*$[.]$[0-9]*$[.]$[0-9]*$$[0-9A-Za-z-]*$' step="$1" if [ -z "$1" ] then step=patch fi base="$2" if [ -z "$2" ] then base=$(git tag 2>/dev/null| tail -n 1) if [ -z "$base" ] then base=0.0.0 fi fi MAJOR=`echo $base | sed -e "s#$RE#\1#"` MINOR=`echo $base | sed -e "s#$RE#\2#"` PATCH=`echo $base | sed -e "s#$RE#\3#"` case "$step" in major) let MAJOR+=1 let MINOR=0 let PATCH=0 ;; minor) let MINOR+=1 let PATCH=0 ;; patch) let PATCH+=1 ;; esac echo "$MAJOR.$MINOR.$PATCH"

Late Edit: 2022-11-19 ictus4u spotted that I wasn’t handling the reset of PATCH to 0 when MINOR gets a bump. I fixed this in the above gist.

So how do you use this? Dead simple, use nextver in a tree that has an existing git tag SemVer to get the next patch number. If you want to bump it to the next minor or major version, try nextver minor or nextver major. If you don’t have a git tag, and don’t specify a SemVer number, then it’ll just assume you’re starting from fresh, and return 0.0.1 :)

Want to find more cool stuff from the original author of this work? Here is a video by the author :)

Featured image is “Feb 11” by “Gordon” on Flickr and is released under a CC-BY-SA license.