Linux and DevOps Cheat Sheets

ssh command in Linux (SSH client) is a program for logging into a remote machine and for executing commands on a remote machine.

Complete cheat sheet with examples to use use sar command to view reports about CPU utilization, memory utilization, I/O usage, swapping statistics, filesystems statistics, network statistics, etc

Create and extract any archive using tar command. List content of an archive, exclude files, create bzip2 or gzip archive using tar command in Linux

which command is used to locate the executable file associated with the specified command in Unix-based operating systems. It searches for the executables in

su command is used to switch users between one user to another and execute commands. You can either keep the user environment or use a different shell with su command in Linux

Use ssh-keygen to generate SSH key to use public key based authentication in Linux. Create key pair with custom filename, change passphrase of existing private key

parted command in a Linux is CLI based utility to work with partitions. You can create, modify or remove partitions via interactive or non interactive commands. One liner examples of parted commands

vgcfgrestore restores the metadata of a volume group from a text backup file produced by vgcfgbackup.

top command in linux is used to monitor runtime cpu, memory usage, NICE value, priority. You can add or remove fields from top command, change the refresh interval

Multiple tee command examples in Linux with cheat sheet. Syntax to use tee command to append content to a file from a command output.

lshw command cheat sheet with examples to display system hardware information.

lscpu command in Linux is used to get CPU information in different format such as JSON. You can collect the output and then parse it using JSON module from supported programming language.

ping command is one of the most used commands in Linux. It is mostly used to check the connectivity between local and remote server. In most cases ICMP traffic is not impacted by firewall so this is very much reliable. …

25 ps command examples used in Linux to monitor the running processes. Complete cheat sheet of ps command with practical examples.

lvcreate command is used to create different types of Logical Volumes in Linux. You can create linear, striped, mirrored logicla volumes. You can also create snapshot volumes used for backup and restore purpose.

lvchange command allows you to change attributes of a logical volume in the volume group. You can perform different operations such as activate/deactivate, change access permission and set/reset contiguous allocation …

lvremove command is used to remove a logical volume from a volume group in Linux

lvscan command scans for all logical volumes in the Linux system and lists them. It displays the status, path, size, and allocation policy in one line per