This is Devhints.io cheatsheets — a collection of cheatsheets I've written.

# Linux

### Read/Write/Execute a file

    $ chmod +rwx App
    $ ./App

### Remove

    $ rm namefile
    $ rm -d Directory
    $ rm -rf Directory_with_files

### Copy file to a folder

    $ cp namefile Downloads
    $ ls
    namefile  Desktop  Documents  Downloads  Music  Pictures  Public  Templates  Videos
    $ cd Downloads
    ~/Downloads$ ls
    namefile

### Create empty file

    $ touch namefile
    $ touch --help

### Show in the terminal the file

    $ cat namefile
    $ cat --help

### Create new directory

    $ mkdir name
    $ mkdir --help

### list files from directory

    $ ls
    Desktop  Documents  Downloads  Music  Pictures  Public  Templates  Videos
    $ ls --help

### Mounting a RAM drive

    $ mount -t tmpfs -o size=5G,nr_inodes=5k,mode=700 tmpfs /tmp

### Visudo

    sudo visudo

    username ALL=(ALL) NOPASSWD:/sbin/restart whatever

### Display the amount of available disk space

    df
    df -h   # human-readable format
    df -a   # all filesystems

### Display disk usage

    du
    du -hsx * | sort -rh | head -10    # largest 10 folders

### Answer yes in a bash script

    yes | /your/command

Devhints.io cheatsheets is a collection of cheatsheets I've written over the years. Suggestions and corrections? Send them in. I'm Rico Sta. Cruz. Check out my Today I learned blog for more.