Slackware Linux Essentials
Chapter 16. Slackware Package Management
(
http://www.slackware.com/book/index....rce=x4132.html)
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makepkg
makepkg(8) will package up the current directory into a valid Slackware package. It will search the tree for an symbolic links and add a creation block to the postinstallation script for creating them during the package install. It also warns of any zero-length files in the package tree.
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The only thing you need to remember is that makepkg is located in /sbin (on my Slack 9.0) so unless you've changed things you're gonna need to be root to launch it.