Linux
Linux Commands List
The commands found in the downloadable cheat sheet are listed below.
Hardware Information
Show bootup messages:
See CPU information:
Display free and used memory with:
List hardware configuration information:
See information about block devices:
Show PCI devices in a tree-like diagram:
Display USB devices in a tree-like diagram:
Show hardware information from the BIOS:
Display disk data information:
Conduct a read-speed test on device/disk:
Test for unreadable blocks on device/disk:
Searching
Recursively search for a pattern in a directory:
Find all files and directories related to a particular name:
See files larger than a specified size [+100M] in a folder:
File Commands
List files in the directory:
Show directory you are currently working in:
Remove a directory recursively:
Recursively remove a directory without requiring confirmation:
Recursively copy the contents of one file to a second file:
Rename [file_name1] to [file_name2] with the command:
Show the contents of a file:
Append file contents to another file:
Display the first 10 lines of a file with:
Show the last 10 lines of a file:
Encrypt a file:
Decrypt a file:
Show the number of words, lines, and bytes in a file:
Directory Navigation
Move up one level in the directory tree structure:
Change directory to $HOME:
Change location to a specified directory:
File Compression
Archive an existing file:
Create a gzip compressed tar file by running:
Compress a file with the .gz extension:
File Transfer
Users
See details about the active users:
Show last system logins:
Show which users are logged in and their activity:
Add a new group by typing:
Add a new user:
Add a user to a group:
Delete a user:
Modify user information with:
Package Installation
Find a package by a related keyword:
Show package information and summary:
Install a package using the YUM package manager:
Install a package using the DNF package manager:
Install an .rpm package from a local file:
Remove an .rpm package:
Install software from source code:
Process Related
See a snapshot of active processes:
Show processes in a tree-like diagram:
Display a memory usage map of processes:
See all running processes:
Terminate a process under a specific name:
Terminate all processes labelled "proc”:
List and resume stopped jobs in the background:
Bring the most recently suspended job to the foreground:
Bring a particular job to the foreground:
List files opened by running processes:
System Information
Show system information:
Display how long the system has been running, including load average:
See system hostname:
Show the IP address of the system:
List system reboot history:
See current time and date:
Query and change the system clock with:
Show current calendar (month and day):
List logged in users:
See which user you are using:
Show information about a particular user:
Disk Usage
See free and used space on mounted systems:
Show free inodes on mounted filesystems:
Display disk partitions, sizes, and types with the command:
Show disk usage of the directory you are currently in:
Display target mount point for all filesystem:
Mount a device:
SSH Login
Connect to host as user:
Securely connect to host via SSH default port 22:
Connect to host using a particular port:
Connect to host via telnet default port 23:
File Permission
Assign read, write, and execute permission to everyone:
Give read, write, and execute permission to owner, and read and execute permission to group and others:
Assign full permission to owner, and read and write permission to group and others:
Change the ownership of a file:
Change the owner and group ownership of a file:
Network
Assign an IP address to interface eth0:
Display IP addresses of all network interfaces with:
Show tcp and udp ports and their programs:
Display more information about a domain:
Do a reverse lookup on domain:
Do reverse lookup of an IP address:
Perform an IP lookup for a domain:
Show the local IP address:
Linux Keyboard Shortcuts
Kill process running in the terminal:
Stop current process:
The process can be resumed in the foreground with fg or in the background with bg.
Cut one word before the cursor and add it to clipboard:
Cut part of the line before the cursor and add it to clipboard:
Cut part of the line after the cursor and add it to clipboard:
Paste from clipboard:
Recall last command that matches the provided characters:
Run the previously recalled command:
Exit command history without running a command:
Run the last command again:
Log out of current session:
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