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Systems Administration Notes.

Slackware ISO integrity checks.

Slackware ISO integrity checks.

These days I download and install software comparatively rarely and each time have to remind myself of the methods for checking the integrity of the of the items, so here as an aid memoire are the basic commands for downloading and checking a slackware release.

The procedure is:


download the iso image, download the .md5 file which contain the md5 checksum for the iso file.


Check this against the output from md5sum, they should be the same. Bmd5sum, they should be the same.


download the .asc file which contains the digital signature for the file, and


check this with pgp.

Here it is as series of command line instructions (substitute the version number e.g. 14.2 for <version >

# wget http://mirrors.slackware.com/slackware/slackware-iso/slackware-<version>-iso/slackware-<version>-install-dvd.iso
# wget http://mirrors.slackware.com/slackware/slackware-iso/slackware-<version>-iso/slackware-<version>-install-dvd.iso.md5
# md5sum slackware-<version>-install-dvd.iso |diff - slackware-<version>-install-dvd.iso.md5
# wget http://mirrors.slackware.com/slackware/slackware-iso/slackware-<version>-iso/slackware-<version>-install-dvd.iso.asc
# gpg -verify slackware-<version>-install-dvd.iso.asc slackware-<version>-install-dvd.iso-

Clifford W Fulford
5th May 2017.

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