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This article mainly explains "the usage of linux basic commands sum and cksum". The content of the explanation is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "the usage of linux basic commands sum and cksum".

Sum

BSD and system V algorithms can be used to calculate the check code and block number of files. If no file is specified, or if the file name is "-", then the file is standard input.

The scope of this command: RedHat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

Sum [options] file

2. List of options

Option

Description

-- version

Display version information

-- help

Show help documentation

-r

Use the system v algorithm, using 1k bytes.

S

Using the BSD algorithm, using 512 bytes

3. Examples

1) BSD algorithm

[root@192 weijie] # sum-r 1.c

/ / check the number of blocks

35112 1

2) systemV algorithm

[root@192 weijie] # sum-s 1.c

/ / check the number of blocks file name

543 1 1.c

Cksum

Check whether the crc of the file is correct and count the number of bytes of the file. The scope of this command: RedHat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

Cksum [options] file

2. List of options

Option

Description

-- help

Show help documentation

-- version

Display version information

3. Examples

Detection file

[root@192 weijie] # cksum 1.c

/ / crc check byte file name

4188905735 12 1.c

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