2. Basic Commands¶

Table 2.1. Buit-in commands¶
Command	Description
ls	List
cd	Change Directory
cat	Displays file
cp	Copy
mv	Move
rm	Remove
man	Manual Pages
clear	Clears terminal
pwd	Shows Present Working Directory
env	Show all environmental variables
echo	Displays text
tail	Last -n lines from file
head	First -n files from file
grep	Regual Expressions tool (parses input for regexp)
crontab	Automatic tasks
sudo	Switch user and execute command
apt install	installs application (on Debian based systems)
apt search	searches for application (on Debian based systems)
history	Last executed commands

sed	Stream Editor
awk	Parses lines
uniq	Remove duplicated lines
sort	Sorts input
wc	Counts characters and lines
export	Set environment variable
chown	Change Owner
chmod	Change Permissions (mods)
du	Disk Usage
df	Disk Free (space)
file	Show file type and metadata
whoami	Shows user login
which	Shows path to executable
find	Finds file in the filesystem
locate	Locates file (from updatedb database)
updatedb	Scans filesystem and create database for locate
dmesg	Debugging Messages
locale	Localization
touch	Creates empty file
alias	Creates user defined alias
mc	Midnight Commander
su	Switch user
rsync	Syncronizes two directories
ssh	Secure Shell Connection

2.1. `cd`¶