# Bash Commands

## Find
### Find and delete
Find and delete command
```bash
find / -name .DS_Store -delete
```

Alternative find and delete command
```bash
find / -name ".DS_Store" -exec rm {} \;
```
the previous command is due that not all `find` have a delete funcion but with overhead of new process `-exec`.

Find and delete with no overhead
```bash
find / -name .DS_Store -print0 | xargs -0 rm
```

## du

du - estimate file space usage [man-page](https://man7.org/linux/man-pages/man1/du.1.html)

[example How to Get the Size of a Directory in Linux](https://linuxize.com/post/how-get-size-of-file-directory-linux/)

```bash
sudo du -sh /var

# Output
85G	/var
```

```bash
sudo du -shc /var/*

# Output
24K	    /var/db
4.0K	/var/empty
4.0K	/var/games
77G	    /var/lib
4.0K	/var/local
0	    /var/lock
3.3G	/var/log
0	    /var/mail
4.0K	/var/opt
0	    /var/run
196K	/var/spool
28K	    /var/tmp
85G	total
```

```bash
sudo du -h /var/ | sort -rh | head -5

# Output
85G	    /var/
77G	    /var/lib
75G	    /var/lib/libvirt/images
75G	    /var/lib/libvirt
5.0G	/var/cache/pacman/pkg
```