The best uses I’ve found for the SIGSTOP and SIGCONT signals are times when a process goes haywire, or when a script spawns too many processes at once.
Usage Examples for both signals:
1 2 | kill -SIGSTOP [pid] kill -SIGCONT [pid] |
Courier time outs
Your client (Thunderbird or Outlook) get time outs while you send mails or change between directories.
The first what you should do, check your logs:
This can be your possible error:
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All Debian Releases
Very nice overview about all Debian releases:
Debian 8.0 Jessie
Debian 7.0 (coming 2013) Wheezy
Debian 6.0 (Latest Stable) 6 February 2011 Squeeze
Debian 5.0 14 February 2009 Lenny (5.0.7)
Debian 4.0 8 April 2007 Etch
Debian 3.1 6 June 2005 Sarge
Debian 3.0 19 July 2002 Woody
Debian 2.2 15 August 2000 Potato
Debian 2.1 March 9th, 1999 Slink
Debian 2.0 July 24th, 1998 Hamm
Debian 1.3 June 5th, 1997 Bo
Debian 1.2 December 12th, 1996 Rex
Debian 1.1 June 17th, 1996 Buzz
Debian 1.0 Never released –
Debian 0.93R6 November 1995 –
Debian 0.93R5 March 1995 –
Debian 0.91 January 1994 –
Debian 0.01 through 0.90 August-December 1993 –
Prevent brute force attacks
Fail2ban monitors log files like /var/log/auth.log and Webserver access logs and can temporarily or persistently bans failure-prone addresses by updating existing firewall rules.
Currently, by default, fail2ban supports ssh/apache/vsftpd but configuration can be easily extended for monitoring any other ASCII file.
[Read more…]
Second chance: etckeeper
Etckeeper is a useful tool to store /etc in a version control system. It allows you to read the changes that have been made to the files in /etc, document these changes and recover a previous version of a modified file in case we made some changes that we don’t want to keep. It’ s a great system to control your server and find very quickly solutions.
Its installation is very trivial:
1 | aptitude install etckeeper |
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