These are basic commands for using (B)ourne (A)gain (SH)ell. zsh is a shell language, the shell is also referred as the terminal. Zsh is similar and is now becoming the defualt shell for MacOS (Catalina+). zsh is still default for most Linux systems. Watch this beginner video to get comfortable with these basics. Then you can add the other tools onto this knowledge.
Advanced controls for ALSA soundcard driver.
Ansible is a configuration tool, that can setup and administer multiple machines on a network.
Display network information such as open connections, sockets and ports. For Macs us lsof instead.
Used for pattern scanning. Awk has it’s own processing language. Good for separating out fields in text documents. Can transform data files and produce formatted reports.
Check disk for bad sectors. Can also wipe drives.
Certbot is used for creating secure socket layer certificates used in authentication. It is free and open source. Brought to all of the world by Letsencrypt.
Used in verifying downloads. Integrity checking to making sure there was no funny business or corruption.
Cloud init is used for deploying images of distributions with various users, keys, settings in place.
Music player for use in the terminal.
System task scheduler. This is where scripts can be automatically run at set intervals.
Curl is a tool to transfer data from or to a server, using one of the supported protocols (DICT, FILE, FTP, FTPS, GOPHER, HTTP, HTTPS, IMAP, IMAPS, LDAP, LDAPS, POP3, POP3S, RTMP, RTSP, SCP, SFTP, SMB, SMBS, SMTP, SMTPS, TELNET and TFTP). The command is designed to work without user interaction.
Disk Duplicater can convert, copy and format. This works on block and character devices.
A command line diagnostic tool from BIND
Docker creates containers that run processes. They are lightweight. Some may call them VMs but they are much lighter. Best Practices is a must read!!
Debian Package is used to install, build, manage and remove .deb files.
Disk Usage has varying levels of depth for showing what is using space on a drive.
Exiftool is used to view and manage exif data of a file.
Integrates with iptables or ufw firewalls to enforce bans on suspect IP addresses.
This command will allow editing and re-execution of commands contained in history.
FFMPEG is a video and audio converter. Used under the hood in many applications.
Find is one of the most powerful tools when used correctly. It can be used to parse over many objects and files all the while making changes. Much more than just finding files. However, it is not used for searching inside a file, use egrep for that!
File systems table is used for configuring mounts within a Debian system.
Git is a distributed version control system created by Linus Torvalds.
GnuPG (or Gnu Privacy Guard) is an adaptation of an earlier encryption standard known as PGP (or Pretty Good Privacy).
Show or set system hostname.
Shows more information than hostname.
Can be used to adjust images. Typically used to shrink image sizes for web use.
inxi is a command line system information script. Works for Linux and Mac.
Obtain and maintain IP information.
Controls flows for IPsec. The ipsecctl utility controls flows that determine which packets are to be processed by IPsec. It allows ruleset configuration, and retrieval of status information from the kernel’s SPD (Security Policy Database) and SAD (Security Association Database). It also can control isakmpd(8) and establish tunnels using automatic keying with isakmpd(8). The ruleset grammar is described in ipsec.conf(5)
Administration tool for packet filtering and NAT.
IKEv1 key management daemon.
Journalctl is used to query the systemd journal.
Links come in several forms. Target must exist when the link is made.
Check Distribution information of a Linux system.
Show or set system hostname.
lsof is useful for filtering on connection statuses.
Build a linux filesystem. This is a front-end for the various filesystem builders (mkfs.fstype).
Molecule is essentially a plugin for ansible used to test playbooks and roles.
Mount can list and also add filesystems into an operating system via directories.
Netcat can be used for several things regarding networking.
Display network information such as open connections, sockets and ports. For Macs us lsof instead.
Show DNS and state of network card
Commands for controlling nginx server.
Number lines of files.
Network Mapper is an open source tool for network exploration and security auditing.
Pacman is the package manager for Arch and Manjaro distros of Linux.
Podman is an daemonless docker and does a better job exposing the VM (machine)
Controls for ALSA soundcard driver.
Show or set system hostname.
TCP PORT 111 - default port for rpcbind server.
RPC (remote procedure call) allos a client program to call functions that execute on a remote server.
Rsync is a remote and local file copying tool.
Syntactically awesome style sheets is a preprocessor for creating css.
Say will audibly read out lines of input. (MacOs)
Secure Copy is used to copy files over a network.
SELinux is standand on centos, rhel and fedora and optional on debian and ubuntu.
Sftp is an interactive file transfer program performed securely through ssh transport.
Shred overwrites the contents of a file to hide data from recovery.
Sips is used to query or modify raster image files and colorsync ICC profiles.
Ookla created a speedtest for CLI. Download
Secure Shell is used to login to remote machines. It can also be used for executing commands on a remote machine.
Sed is used to perform basic text transformations on an input stream. Essentially used for substitution or as a find and replace. Files can be edited without opening them!
Systemctl is used to introspect and control the state of the “systemd”.
Systemd is what controls services.
Tailscale is a zero config VPN. It also produces a private flat network.
Tar saves many files together into a single disk archive, and can restore files from the archive.
Taskwarrior manages a todo list.
Dump traffic on a network. CLI version of wireshark.
Access Plane for securing access to servers, clusters and applications.
Tmux is an oldie but goodie for managing many windows & panes in the terminal.
Translate Characters. For instance changing characters from upper to lower case.
The uncomplicated firewall is a frontend for iptables. It manages netfilter.
Unmount file systems.
Creates developer environments inside Virtual Machines (VMs)
Follow for customizing vim on a machine.
Instructional guide for using vim.
Wget will non-interactively download files off the web using HTTP HTTPS FTP.
WireGuard securely encapsulates IP packets over UDP.
Generate a hexdump of a binary file or vice versa.
Youtube Downloader allows audio and video to be formatted and downloaded off the web.
“zed"fs or ‘z’fs is a file system and volume manager created by Sun Microsystems which have been bought out by Oracle.
Zip will compress files into an archive.
An highly customizable alternate shell instead of bash.