sum(1)

sum -- print checksum and block count of a file

Synopsis

sum [-r] file

Description

sum calculates and prints a 16-bit checksum for the named file, and also prints the number of 512 byte blocks in the file. It is typically used to look for bad spots, or to validate a file communicated over some transmission line. The option -r causes an alternate algorithm to be used in computing the checksum.

Files

/usr/lib/locale/locale/LC_MESSAGES/uxdfm: language-specific message file (See LANG on environ(5).)

Diagnostics

``Read error'' is indistinguishable from end of file on most devices; check the block count.

References

wc(1)

Notices

This command has been updated to handle files greater than 2GB.