A post of handy bits for the Linux console

Related Linux posts:

Add files to a tar archive:

tar -cvf archive.tar file1 file2 directory1 directory2

Extract a tar archive:
```
tar -xvf archive.tar
```
Find all files containing a given string:
```
grep -rl 'search_string' start_directory
```
Show .php files in the current directory modified in the last 7 days:
```
find . -type f -name '*.php' -mtime -7
```
How much space directories take up:
```
sudo du -sh /home/*
```
Who’s listening on a port:
```
fuser -v 8080/tcp
```
How much disk space is left:
```
df -h
```