Make .gitignore ignore everything except a few files

Solution 1:

An optional prefix ! which negates the pattern; any matching file excluded by a previous pattern will become included again. If a negated pattern matches, this will override lower precedence patterns sources.

# Ignore everything
*

# But not these files...
!.gitignore
!script.pl
!template.latex
# etc...

# ...even if they are in subdirectories
!*/

# if the files to be tracked are in subdirectories
!*/a/b/file1.txt
!*/a/b/c/*

Solution 2:

If you want to ignore the whole content of a directory except one file inside it, you could write a pair of rules for each directory in the file path. E.g. .gitignore to ignore the pippo folder except from pippo/pluto/paperino.xml

pippo/*
!pippo/pluto
pippo/pluto/*
!pippo/pluto/paperino.xml

Note that if you simply had written above:

pippo/*
!pippo/pluto/paperino.xml

It wouldn't work because the intermediary pluto folder would not exist to Git, so paperino.xml could not find a place in which to exist.

Solution 3:

You want to use /* instead of * or */ in most cases

Using * is valid, but it works recursively. It won't look into directories from then on out. People recommend using !*/ to whitelist directories again, but it's actually better to blacklist the highest level folder with /*

# Blacklist files/folders in same directory as the .gitignore file
/*

# Whitelist some files
!.gitignore
!README.md

# Ignore all files named .DS_Store or ending with .log
**/.DS_Store
**.log

# Whitelist folder/a/b1/ and folder/a/b2/
# trailing "/" is optional for folders, may match file though.
# "/" is NOT optional when followed by a *
!folder/
folder/*
!folder/a/
folder/a/*
!folder/a/b1/
!folder/a/b2/
!folder/a/file.txt

# Adding to the above, this also works...
!/folder/a/deeply
/folder/a/deeply/*
!/folder/a/deeply/nested
/folder/a/deeply/nested/*
!/folder/a/deeply/nested/subfolder

The above code would ignore all files except for .gitignore, README.md, folder/a/file.txt, folder/a/b1/ and folder/a/b2/ and everything contained in those last two folders. (And .DS_Store and *.log files would be ignored in those folders.)

Obviously I could do e.g. !/folder or !/.gitignore too.

More info: http://git-scm.com/docs/gitignore

Solution 4:

A little more specific:

Example: Ignore everything in webroot/cache - but keep webroot/cache/.htaccess.

Notice the slash (/) after the cache folder:

FAILS

webroot/cache*
!webroot/cache/.htaccess

WORKS

webroot/cache/*
!webroot/cache/.htaccess