CheatSheet

Introduction to traceroute command traceroute is a command-line tool that displays the routes taken by network packets to reach the given host. It also helps to find slow traffic between source and destination. traceroute can

Introduction to tcpdump command tcpdump command in Linux captures and analyses network traffic arriving at or departing from the system. System administrators mostly use it for network troubleshooting and security testing. It also captures non-TCP packets

Introduction to grep command grep command in Linux searches for a pattern of characters in a file. grep is a short form for Global Regular Expression Print. It prints all lines that contain the matching

Introduction to dumpe2fs command The dumpe2fs is a part of the e2fsprogs package. The dumpe2fs command displays the superblock and block group information of the Linux filesystem. It works with the ext2/ext3/ext4 filesystem present on

Introduction to mke2fs command The mke2fs command helps to create an ext2/ext3/ext4 filesystem in Linux. mke2fs is part of the e2fsprogs package. The programs in the e2fsprogs package are useful for creating, checking, and maintaining

Introduction to losetup command The loop device is a block device that maps its data to the blocks of a regular file or another block device. Loop devices are mounted as file systems on Unix-like

Introduction to tune2fs command tune2fs command allows you to view and change various filesystem parameters on Linux ext2, ext3, or ext4 filesystems. Some parameters you can modify are filesystem volume name, maximum mount count, mount

Introduction to swapon and swapoff command Linux uses swap space when the physical memory (RAM) reaches its maximum capacity. If the system requires more memory and the RAM is insufficient, inactive pages in memory are

Introduction to locate command There are multiple tools in Linux that allows you to search files and directories in the system. locate is one of the most used tools for searching files in Unix-based operating

Introduction to cpio command cpio refers to copy in and copy out. It is a command-line utility in Linux/UNIX for creating, listing, and extracting archive files. It creates a .cpio archive file. It can copy

Introduction to groupadd command In Linux, groups help to set permission on the group level instead of each individual user. Users can be added to a group and have the same privileges of reading, writing,

Introduction to chacl command In Linux, files and directories have permissions for the owner of the file, the group associated with the file, and other users of the system. But these permissions have limitations as

Introduction to lbzip2 command lbzip2 is a parallel bzip2 utility. bzip2 is a single-threaded, whereas lbzip2 employs multiple threads that result in better performance on multi-core systems. lbzip2 also uses the Burrows-Wheeler block-sorting text compression