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The traceroute command is used to trace the entire path of a data packet when it is transmitted on the network. The default data packet size it sends is 40 bytes. Through traceroute, we c...

The cksum command is used to check whether the CRC of a file is correct, and to ensure the correctness of the file during the transfer from one system to another. Cyclic Redundancy Check ...

The locate command is actually another way of writing find -name, but it is much faster than the latter, because it does not search a specific directory, but a database /var/lib/locatedb....

The wc command counts the number of bytes, words, and lines in the specified file, and displays and outputs the statistical results. Using the wc command, we can calculate the number of b...

The full English name of the lsattr command is "list attribute", which is used to view the unique attribute information of a specific device or specific file on the Linux second extended ...

The whereis command is used to locate the path of the binary program, source code file, man page and other related files of the command. The search speed of whereis command is very fast, because i...

The sort command is very useful in Linux. It sorts files and outputs the sorted result to the standard. The sort command can either get input from a specific file or from stdin. Syntax: sort [param...

When browsing the content of the text file and displaying the file with the less command, the PageUp key will turn the page up and the PageDown key will turn the page down. To exit the less program...

The file command is used to identify the file type, and can also be used to identify the encoding format of some files. It obtains the file type by looking at the header information of the file, in...

The mattrib command is used to change or display the attributes of MS-DOS files. MS-DOS files refer to a collection of related information recorded on storage media (such as disks and CDs...