notebook/IT/git/Git.md
2021-02-17 20:30:24 +01:00

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# git
![git](../img/git.jpg)
## Clone with submodule recurse
add *--recurse-submodules* to clone command
## Add in staging only a part of modification done in a file
`git add -p`
this will ask if you want to add each modification with this option:
- *y* - Yes, add this hunk
- *n* - No, dont add this hunk
- *d* - No, dont add this hunk and all other remaining hunks. Useful if youve already added what you want to, and want to skip over the rest
- *s* - Split the hunk into smaller hunks. This only works if theres unchanged lines between the changes in the displayed hunk, so this wouldnt have any effect in the example above
- *e* - Manually edit the hunk. This is probably the most powerful option. As promised, it will open the hunk in a text editor and you can edit it to your hearts content
## delete a file only from git repository
`git rm -rf --cached`
## delete a file from complete history
be carefull can't push repo last time use
`git filter-branch --tree-filter 'rm -f passwords.txt' HEAD`
## changing email adress
```
$ git filter-branch --commit-filter '
if [ "$GIT_AUTHOR_EMAIL" = "schacon@localhost" ];
then
GIT_AUTHOR_NAME="Scott Chacon";
GIT_AUTHOR_EMAIL="schacon@example.com";
git commit-tree "$@";
else
git commit-tree "$@";
fi' HEAD
```
## example de déclencheur git dans un dépot git
```bash
#!/bin/bash
GIT_REPO=`pwd`
SITE_NAME=notebook
TMP_GIT_CLONE="/tmp/$SITE_NAME"
PUBLIC_WWW="/usr/share/nginx/html/$SITE_NAME"
# get branch name
if ! [ -t 0 ]; then
read -a ref
fi
IFS='/' read -ra REF <<< "${ref[2]}"
branch="${REF[2]}"
if [ "master" == "$branch" ]; then
mkdir -p $TMP_GIT_CLONE
echo "download repo"
git clone --recursive $GIT_REPO $TMP_GIT_CLONE
cd $TMP_GIT_CLONE
export PATH="$HOME/.local/bin:$PATH"
make install -e BUILDDIR=$PUBLIC_WWW
echo "Cleaning up"
rm -Rf $TMP_GIT_CLONE
fi
exit
```