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UNIX toolbox
This document is a collection of Unix/Linux/BSD commands and tasks which are useful for IT work or for advanced users. This is a practical guide with concise explanations, however the reader is supposed to know what s/he is doing.
Sh - the Bourne Shell
How to build your own complex commands from the simple commands in the UNIX toolbox. This tutorial discusses of Bourne shell programming, describing features of the original Bourne Shell. The newer POSIX shells have more features. I first wrote this tutorial before the POSIX shells were standardized. So the information describe here should work in POSIX shells as it is a subset of the POSIX specifications. You're not getting the most out of UNIX if you can't write shell programs!
The Grymoire - home for UNIX wizards
Shell Quotes; Regular Expressions; Grep; SED; AWK; Find - Finding files.
Backup and Restore MySQL Database Using mysqldump
Using mysqldump, you can backup a local database and restore it on a remote database at the same time, using a single command. In this article, let us review several practical examples on how to use mysqldump to backup and restore.
AMaViS, SpamAssassin, roundcube and mySQL - per user spam filters
Spamassassin is able to store recipient-based preferences in a mysql table with some settings in its local.cf (see spamassassin wiki) However, accessing this with amavis is a real bis problem for many users. Amavis has it’s own user-based configuration policies, but email-plugins as the roundcubemail plugin sauserprefs often only use spamassassin and not amavis. Originally, SA was only called once per message by amavis and therefore recipient-based preferences were not possible at all. This has changed. Now you can use the options @sa_userconf_maps and @sa_username_maps to perform such lookups. Unfortunately these options are still poorly documented. We use them anyway.
FreeBSD package builder with Poudriere
Very clear article, meny thanks to author!
Installing Comodo SSL Certs on Apache and OpenSSL
cat COMODORSADomainValidationSecureServerCA.crt COMODORSAAddTrustCA.crt AddTrustExternalCARoot.crt >> yourdomain.com.cer
Searching Files on UNIX (Regular Expressions)
Searching Files on UNIX, Searching Files Using UNIX grep, Regular Expressions
Tutorialspoint - simply easy learning