September 2009
Beginner
942 pages
85h 34m
English
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Name
md5sum
Synopsis
md5sum [option] [files] md5sum [option] --check [file]
Compute or check 128-bit MD5 checksums. Used to verify that no change has been made to a file. With no files or - specified, read from standard input. The exit status is 0 for success and nonzero for failure.
Options
- -b, --binary
Read the files in binary mode.
- -c, --check
Check the MD5 sum and file information in the file argument (or standard input) against the corresponding files and verify that they are consistent. The input must have been generated by an earlier md5sum command.
- --help
Print usage information and exit.
- --status
Don’t generate output messages; the exit code indicates success or failure. Used only with --check.
- --string=string
Compute the MD5 sum for the specified string. This option does not take a file argument. Put quotes around the string if it contains spaces.
- -t, --text
Read files in text mode. The default.
- --version
Print version information and exit.
- -w, --warn
Warn about improperly formatted checksum lines. Used only with --check.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.