Apropos
Search the whatis database for strings.
apt
A commandline package manager and provides commands for searching and managing as well as querying information about packages
awk
Pattern scanning and text processing language - Awk puts every input into a list of objects.
base64
Base64 encode or decode FILE, or standard input, to standard output.
biosdecode
BIOS information decoder.
blkid
Locate/print block device attributes.
cal
Displays a calendar
cat
Concatenate files and print on the standard output.
chage
Change user password expiry information.
chmod
Change file mode bits.
chsh
Change login shell.
comm
Compare sorted files FILE1 and FILE2 line by line.
crontab
Maintain crontab files for individual users, used for execution of recurring tasks.
cut
Command for cutting out the sections from each line of files.
date
Display the current time in the given FORMAT, or set the system date.
dd
Convert and copy a file - block level - warning: also known as 'data destroyer.
delv
DNS lookup and validation utility, DNSSEC validation.
df
Show information about the file system on which each FILE resides, or all file systems by default.
diff
Compare FILES line by line.
dig
DNS lookup utility.
dmesg
Display or control the kernel ring buffer.
Faketime
Manipulate the system time for a given command.
fdisk
Manipulate disk partition table.
file
Determine type of FILEs.
find
Search for files in a directory hierarchy.
fls
List file and directory names in a disk image.
free
Display amount of free and used memory in the system.
ftp
File Transfer Protocol.
Ghostscript
Ghostscript (PostScript and PDF language interpreter and previewer).
gpg
OpenPGP encryption and signing tool - Sign, check, encrypt or decrypt.
grep
Search for PATTERNS in each FILE.
groupadd
Create a new group.
groupdel
Delete a group.
hdparm
Get/set SATA/IDE device parameters.
head
Print the first 10 lines of each FILE to standard output.
history
GNU History Library.
host
DNS lookup utility.
ifconfig
Configure a network interface.
iotop
Simple top-like I/O monitor.
ip
Show / manipulate routing, network devices, interfaces and tunnels.
iwconfig
Configure a wireless network interface.
journalctl
Query the journal.
kill
Send a signal to a process.
ln
Make links between files.
Locate
Find files by name.
ls
List information about the FILEs (the current directory by default).
lsb_release
Print distribution-specific information.
lsblk
List information about block devices.
lshw
Hardware Lister.
lsmod
Show the status of modules in the Linux Kernel.
lspci
List all PCI devices.
lsusb
List USB devices.
Lvextend
Extend the size of a logical volume.
md5sum
Compute and check MD5 message digest.
mkdir
Make directories.
mkpasswd
Encrypts the given password with the crypt(3) libc function, using the given salt..
modprobe
Add and remove modules from the Linux Kernel.
mount
Mount a filesystem.
mtr
A network diagnostic tool, faster and easier then traceroute.
nc
Netcat, arbitrary TCP and UDP connections and listens.
ncdu
Provides a fast and easy-to-use interface through famous du utility.
netplan
YAML network configuration abstraction for various backends.
netstat
Print network connections, routing tables, interface statistics, masquerade connections, and multicast memberships.
network-manager
NetworkManager monitors all network connections and automatically.
nm connection editor
Allows users to view and edit network connection settings. For example create Wi-Fi hotspot.
nmcli
Command-line tool for controlling NetworkManager.
nslookup
Query Internet name servers interactively.
ntp
Network Time Protocol daemon and utility programs.
passwd
Change user password.
Pdbedit
Manage the SAM database (Database of Samba Users).
ps
Displays information about a selection of the active processes.
rev
Reverse lines characterwise.
scp
Secure copy (remote file copy program).
script
Make a typescript of a terminal session.
sed
Stream editor for filtering and transforming text.
sha1sum
Compute and check SHA1 message digest.
sha256sum
Compute and check SHA256 message digest.
Shuf
Write a random permutation of the input lines to standard output.
sort
Write sorted concatenation of all FILE(s) to standard output.
split
Split a file into pieces.
ss
Another utility to investigate sockets.
strings
Print the sequences of printable characters in files.
sudo
Execute a command as another user.
sudoedit
Edit files as another user.
systemctl
Control the systemd system and service manager.
tail
Print the last 10 lines of each FILE to standard output.
tar
GNU 'tar' saves many files together into a single tape or disk archive, and can restore individual files from the archive.
tee
Read from standard input and write to standard output and files.
tftp
Trivial File Transfer Program.
timedatectl
Control the system time and date.
touch
Change file timestamps.
tr
Translate, squeeze, and/or delete characters from standard input, writing to standard output.
uname
Print certain system information.
upower
Battery information.
vimdiff
Edit between two and eight versions of a file with Vim and show differences.
watch
Execute a program periodically, showing output fullscreen.
wc
Print newline, word, and byte counts for each file.
wget
A non-interactive network retriever.
xargs
Build and execute command lines from standard input.
xxd
Make a hexdump or do the reverse.