Current Location：ApiDemos™ > Linux Command > Linux File Management Command > Linux sum command

Linux sum command - output checksums and block counts for files

The Linux sum command is used to output checksums and block counts for files.

Linux sum command Function Description

Use the sum command to output checksum and block count for each specified file.

Linux sum Command Syntax

sum [Option] [File]

The meaning of each option in the command is shown in the table.

Option Description
-r Using the BSD summation algorithm, in 1KB blocks
-s Use System V summation algorithm, 512 bytes as a block

Linux sum command Examples

Calculate file checksum

sum apidemos.com/ccc.txt

Output:

Linux sum command

Output checksum and block count for /root/anaconda-ks.cfg file

[root@rhel ～]# sum /root/anaconda-ks.cfg
00220    9

Output checksum and block count for /root/anaconda-ks.cfg file in 512-byte blocks using System V summing algorithm

[root@rhel ～]# sum -s /root/anaconda-ks.cfg
19269 17 /root/anaconda-ks.cfg
Like(1)

Related

Linux Login Logout Command
Linux login commandLinux logout commandLinux nologin commandLinux exit commandLinux sulogin commandLinux rlogin commandLinux poweroff commandLinux ctrlaltdel CommandLinux shutdown commandLinux halt commandLinux reboot commandLinux init commandLinux runlevel commandLinux telinit command
Linux File Management Command
Linux cat commandLinux tac commandLinux nl commandLinux more commandLinux less commandLinux head commandLinux tail commandLinux rev commandLinux fold commandLinux fmt commandLinux expand commandLinux pr commandLinux sort commandLinux uniq commandLinux cut commandLinux comm commandLinux diff commandLinux join commandLinux diff3 commandLinux cmp commandLinux colrm commandLinux paste commandLinux mkdir commandLinux tr commandLinux split commandLinux csplit commandLinux tee commandLinux unexpand commandLinux patch commandLinux awk commandLinux sed commandLinux od commandLinux pwd commandLinux cd commandLinux ls commandLinux dir commandLinux dirs commandLinux touch commandLinux rmdir commandLinux cp commandLinux mv commandLinux rm commandLinux install commandLinux tmpwatch commandLinux file commandLinux du commandLinux wc commandLinux tree commandLinux cksum commandLinux md5sum commandLinux sum commandLinux dirname commandLinux mkfifo Command
Cron Expressions
Cron Expression to Run Every Day at 12 PMUnderstanding Vue Cron ExpressionsUnderstanding JS Cron ExpressionsA Comprehensive Guide to Cron Expressions for Scheduled TasksUnderstanding Linux Cron ExpressionsUnderstanding Quartz Cron ExpressionsCron ExpressionCron Time ExpressionCron Expression ParsingCron Expression: Executing a Task Every SecondCron Expression for Every Minute ExecutionCron Expression to Execute Every 10 MinutesCron Expression: Executing Every HourCron Expression to Execute Once a YearCron Expression: How to Schedule a Task to Run Daily at Midnight?