=====GIT=====

====Externi odkazy====
[[http://nvie.com/posts/a-successful-git-branching-model/|A successful Git branching model]]\\
[[https://www.git-tower.com/learn/git/ebook/en/command-line/appendix/best-practices|Best practice]]\\
[[https://www.atlassian.com/git/tutorials/comparing-workflows/centralized-workflow|Tutorial on workflow]]\\

====git promenne====
''git config %%--global user.name "John Doe"%%''\\
''git config %%--%%global user.email johndoe@example.com''\\
''git config %%--%%list'' ... seznam promennyh\\
''git config %%--list --%%system'' ... zobrazi systemove promenne\\
''git config %%--list --%%global'' ... zobrazi globalni promenne\\
''git config %%--%%global alias.co checkout'' ... aliasy\\
''git config %%--%%global credential.helper cache'' ... cachovane kredence\\
/etc/gitconfig ... system config\\
~/.gitconfig, ~/.config/git/config ... global config\\
.git/config ... local config\\
''git help'' ... help\\
''git help remote'' ... help k remote\\

====Vytvoreni repozitare, prace s repozitari====
git init ... vytvoreni lokalniho repozitare v aktualnim adresari\\
git clone git@github.rtp.raleigh.ibm.com:tomas.lipensky-cz/bi-dwh_tools.git ... vytvori adresar bi_dwh_tools s klonem repozitare z URL\\
git remote -v ... vypise repozitare a jejich adresy v danem git adresari\\
git remote ... ukaze aktualni vzdaleny repozitar\\
git remote add repo2 URL ... prida novy vzdaleny repozitar (git server)\\
git fetch repo2 ... ziskani vsech zmen ve vsech vetvich z git serveru repo2, co nejsou v lokalnim repu, neprepise lokalni soubory\\
git pull vetev1 ... fetch z git serveru a aplikovani zmen (merge) na vetev vetev1\\
git pull ... fetch a merge\\
git push origin master ... publikuje zmeny vetve master na git server origin\\
git push origin test:master ... publikuje lokalni vetev test do vzdalene master\\
git push ... publikuje zmeny vsech vetvi na aktualni git server\\
git remote show repo2 ... ukaze stav na servery repo2\\
git remote rename origin repo2 ... prejmenuje git server origin na repo2\\

====Prace s kodem, schvalovani zmen, historie====
''git status'' ... aktualni vetev a zmeny v ni\\
''git status -s'' ... aktualni zmeny - 1 soubor = 1 radek\\
''git add service_scanner.sh *.txt'' ... pridani souboru do stage - kontrola GITem, po commitu se to ulozi k dane verzi projektu\\
''git blame -L 5,10 helm/values.yaml'' ... ukaze autory jednotlivych radku\\
''%%git commit -m "komentar k commitnuti"%%'' ... potvrzeni kodu k odeslani u vsech souboru pridanych pomoci add\\
''git commit --amend'' ... oprava posledniho commitu\\
''%%git commit --fixup 1e30877%%'' ... commitne zmeny jako opravu commitu 1e30877\\
''git reset HEAD service_scanner.sh'' ... odebere soubor service_scanner z commitu\\
''%%git reset --hard origin/dev%%'' ... prepise na tvrdo lokalni zmeny ?\\
''%%git checkout -- service_scanner.sh%%'' ... vrati zmeny z service_scanner.sh, ktere jsme provedli v souboru\\
[[https://git-scm.com/book/en/v2/Git-Basics-Viewing-the-Commit-History|git log]] ... seznam historie commitu - check sum, popis, datum, autor\\
''git log --pretty=oneline'' ... jednoradkovy, pouze check sum a popis\\
''git log -p'' ... ukaze historii i se zmenama\\
''git log --stat'' ... ukaze jen statistiky zmen\\
''%%git log --oneline -5 --author lipensky --before "Fri Mar 26 2009"%%'' ... filtr pro log\\
''git show'' ... ukaze posledni zmeny\\
''git diff'' ... porovna zmeneny soubor oproti puvodnimu (z git lokalnih repozitare)\\
.gitignore ... ignore list pro stage a commit\\
''git rm a.txt'' ... odebere z repozitare a.txt\\
''git mv b.txt a.txt'' ... prejmenuje v repu b.txt na a.txt\\

''git reflog'' ... seznam zmen\\
''git revert'' ... vrati zmeny\\
''git reset'' ... pozor, muze byt nebezpecne, ztrata zmen\\
''%%git rebase -i --autosquash 7dbe2a9%%'' ... rebase - slouci fixupy (opravy), otevre v rebase interaktivnim modu\\
''git merge origin master'' ... udela pull commitu z masteru a jejich merge do aktualni vetve\\
''git rebase -i HEAD~3'' ... rebase poslednich 3 commitu\\
''git shortlogs'' ... vylistuje comity podle autoru\\
''git gc'' ... garbage collection\\

====Tagy====
Vice info: [[https://git-scm.com/book/en/v1/Git-Basics-Tagging]]

''%%git tag -a 1.0.1 -m "applied hotfix 1"%%'' ... prida tag k posledni zmene (commitu)\\
''git tag -a 1.0.0 -m %%"initial version"%% 20721acbb115cc33848dfcc21'' ... otaguje commit, jehoz check sum, nebo jeho cast je v parametru\\
''git show 1.0.1'' ... ukaze zmeny pro dany tag\\
''git tag'' ... seznam tagu\\
''git tag pracovni'' ... prida lehky tag - bez komentaru, k posledimu commitu\\
''git tag -l %%"prac*"%%'' ... vylistuje vsechny tagy, co zacinaji na prac\\
''git push REMOTE TAG'' ... odesle zmeny do repozitare REMOTE s tagem TAG, jinak se tagy neprenasi\\
''git push REMOTE %%--%%tags'' ... odesle zmeny do repozitare, prenese i tagy\\
''%%git notes add -m "Zkontrolovano 2019/05/12"%%'' ... pridani note\\

====Vetve / branches====
Vice o vetvich: [[https://git-scm.com/book/en/v1/Git-Branching-Basic-Branching-and-Merging]]

git checkout master ... prepne HEAD - ukazatel na aktualni vetev na "master" a prehodi vsechny soubory na aktualni soubory z vetver master\\
git checkout -b hotfix1 ... vytvori z aktualni vetve novou vetev hotfix1 a prepne se do ni\\
git commit -a -d %%"%%oprava hotfix1%%"%% ... add (-a = add na vsechny soubory, co se zmenily) a commit (schvaleni zmen)\\
git checkout master ... prepne zpet do puvodni vetve\\
git branch -d hotfix1 ... smaze vetev hotfix1\\
git branch ... seznam vetvi, ukaze aktualni\\
git checkout -b hotfix1 origin/hotfix1 ... vytvori novou lokalni vetev - kopii vzdalene vetve hotfig1\\
git rebase master ... jako merge, ale není fast forward, feature branch A-B-C-D, master branch A-B-E-F, vysledek A-B-E-F-C-D
git merge master ... sjednoti zmeny - prijme zmeny z master do aktualni branche, feature branch A-B-C-D, master branch A-B-E-F, vysledek A-B-C-D-E-F\\

====git vnitrnosti====
git count-objects -v ... statistiky objektu\\

====git flow====
Po doinstalovani doplnku [[http://danielkummer.github.io/git-flow-cheatsheet/|flow]]
lze ridit vyvoj (management vice vetvi) jednodusseji.

====Vyreseni konfliktu====
git checkout master\\
git branch nova-vetev-na-ulozeni-konfliktnich-commitu\\
git fetch --all\\
git reset --hard origin/master\\

====GitLab====
[[https://docs.gitlab.com/ce/api/groups.html|GitLab api - skupiny]]\\
[[https://docs.gitlab.com/ee/api/projects.html|GitLab api - projekty]]\\
curl -k --header %%"%%PRIVATE-TOKEN: $TOKEN%%"%% https://gitlab.url.com/api/v3/groups/my-group 2>/dev/null | grep -o "[^,\"]\+:my-group/[^,\"]\+\.git" ... url na vylistovani objektu grupy\\

====Scenare====
==procisteni .git adresare==
Zdroj: [[https://stackoverflow.com/questions/5613345/how-to-shrink-the-git-folder]]:\\
```
git clone remote-url
for branch in `git branch -a | grep remotes | grep -v HEAD | grep -v master`; do
    git branch --track ${branch##*/} $branch
done

#!/bin/bash
#set -x 

# Shows you the largest objects in your repo's pack file.
# Written for osx.
#
# @see http://stubbisms.wordpress.com/2009/07/10/git-script-to-show-largest-pack-objects-and-trim-your-waist-line/
# @author Antony Stubbs

# set the internal field spereator to line break, so that we can iterate easily over the verify-pack output
IFS=$'\n';

# list all objects including their size, sort by size, take top 10
objects=`git verify-pack -v .git/objects/pack/pack-*.idx | grep -v chain | sort -k3nr | head`

echo "All sizes are in kB. The pack column is the size of the object, compressed, inside the pack file."

output="size,pack,SHA,location"
for y in $objects
do
    # extract the size in bytes
    size=$((`echo $y | cut -f 5 -d ' '`/1024))
    # extract the compressed size in bytes
    compressedSize=$((`echo $y | cut -f 6 -d ' '`/1024))
    # extract the SHA
    sha=`echo $y | cut -f 1 -d ' '`
    # find the objects location in the repository tree
    other=`git rev-list --all --objects | grep $sha`
    #lineBreak=`echo -e "\n"`
    output="${output}\n${size},${compressedSize},${other}"
done

echo -e $output | column -t -s ', '

git filter-branch --tag-name-filter cat --index-filter 'git rm -r --cached --ignore-unmatch filename' --prune-empty -f -- --all

rm -rf .git/refs/original/

git reflog expire --expire=now --all

git gc --prune=now

git gc --aggressive --prune=now
git push origin --force --all
git push origin --force --tags
```