Well, thanks to Robby Russel and a little bit of my shellscripting oh-my-zsh project now supports symfony2 completion. Just install oh-my-zsh, edit .zshrc and add symfony2 to plugins list:
plugins=(git github symfony2)
or update omz:
cd ~/.oh-my-zsh git pull origin master
Swapiness 100 means 'swap as much as possible', sorry. Correct way to reduce swapping in Ubuntu is
vm.swappiness=1
is /etc/sysctl.conf . After edit, do sudo sysctl -p or reboot. Now uptime 7 hours, no swap used.
PS: Can't wait for my ssd to arrive 
Well, the memcachedb again ate whole sshd with infinite log.xxxxxxsomething files.
After a lot of digging around, found this memcachedb-guide-1.0. It appeared that memcachedb has db_archive command to purge all un-needed logs!
Just create a following file somewhere, e.g. /root/memcachedb_rotate_logs:
db_archive quit
and add following to crontab to rotate memcachedb logs hourly:
0 * * * * /usr/bin/telnet localhost 21201 < /root/memcachedb_rotate_logs
(fix port number if needed).
Seems like the only normal way to run redmine is with rack
ruby script/server -e production
and this simple initscript:
#!/bin/bash
### BEGIN INIT INFO
# Provides: redmine
# Required-Start: $local_fs $all
# Required-Stop:
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Redmine issue tracker
### END INIT INFO
case "$1" in
start)
cd /var/www/redmine/
/usr/bin/ruby script/server -d -e production
;;
stop)
kill -9 `ps aux | grep "ruby script/server" | awk '{ print $2 }' | head -n 1`
;;
esac
mograil / passenger sucks beyond understanding
For example, if you have an linux shell command output, newline-separated, and need to convert output to space-separated, pipe it to tr "\n" " " like so:
dpkg -l | grep php | cut -d " " -f 3 | tr "\n" " "
Found a wonderful plugin to monitor CPU usage on openvz containers:
http://exchange.munin-monitoring.org/plugins/openvzcpu/version/3/raw
Imagine you were copying an, eg, virtual server from /server to /newserver, and messed permissions in /etc; thre's a way to copy permissions with this simple script:
#!/bin/bash source=$1 target=$2 echo "Copy files from $source to $target" cd $source files=`find $source` for file in $files do #this is some bash voodoo - string part replacement targetFile=$target${file#$source} #stat command can accept -c parameter and return data in needed format #where %u and %g are numeric user/group ids, and %a - octal permissions permissions=`stat -c%a $file` ownership=`stat -c%u:%g $file` echo $targetFile to $ownership $permissions chmod $permissions $targetFile chown $ownership $targetFile done
invoke this like
./permissions.sh /server/etc /newserver/etc
change %u:%g to %U:%G if you prefer string id's (www-data:www-data) more than numeric (0:0)
A quick'n'dirty ActiveMQ initscript, if activemq extracted to /opt/activemq.
Enable with
update-rc.d activemq defaults
, LSB-tags present.
#! /bin/sh ### BEGIN INIT INFO # Provides: activemq # Required-Start: $local_fs $all # Required-Stop: # Default-Start: 2 3 4 5 # Default-Stop: 0 1 6 # ActiveMQ message broker ### END INIT INFO case "$1" in start) /opt/activemq/bin/activemq start > /dev/null if [ $? -eq 0 ] then echo "Started ok!" else echo "Start error, try /opt/activemq/bin/activemq start" fi ;; stop) /opt/activemq/bin/activemq stop > /dev/null if [ $? -eq 0 ] then echo "Stopped ok!" else echo "Stop error, try /opt/activemq/bin/activemq stop" fi ;; status) if [ `/opt/activemq/bin/activemq list | grep "Connection refused" | wc -l` -eq 0 ] then echo "Running and connected, web-interface on port 8161" else echo "Not running or connection refused" fi ;; restart) echo "Stopping..." /opt/activemq/bin/activemq stop > /dev/null echo "Starting..." /opt/activemq/bin/activemq start > /dev/null if [ `/opt/activemq/bin/activemq list | grep "Connection refused" | wc -l` -eq 0 ] then echo "Running and connected, web-interface on port 8161" else echo "Not running or connection refused" fi ;; *) echo "Usage: $0 start|stop|status|restart" >&2 exit 3 ;; esac
Just to remember how to setup this )
Via scie.nti.st
Put your admin key in /tmp/id_rsa.pub
apt-get install gitosis sudo adduser \ --system \ --shell /bin/sh \ --gecos 'git version control' \ --group \ --disabled-password \ --home /var/git \ git sudo -H -u git gitosis-init < /tmp/id_rsa.pub
fetch admin
git clone git@YOUR_SERVER_HOSTNAME:gitosis-admin.git
cd gitosis-admin
config file cheat sheet:
[group officeworkers] members = john ken barbie writable = repo1 readonly = repo2 repo3
...and just add/commit/push admin.
Инсталляция принтера Canon в Linux:
- фтыкаешь
- линукс такой "ааааа! принтер! вкусне сладке принтер!"
- работаешь
Инсталляция принтера HP в Linux:
- фтыкаешь
- ничего
- перефтыкаешь
- определяется, но не работает
- запускаешь hp-setup
- виснет
- запускаешь kdesudo hp-setup
- виснет на next
- через полчаса предлагает лениво скачать дравер
- думаешь качет? фуй, оно полчаса рисует окно с лицензией
- временем на две сигареты инсталлится
- принтер жалобно мигает лампочками
- может быть печатает