mirror of
https://github.com/mbirth/wiki.git
synced 2024-12-24 22:54:09 +00:00
Added various pages.
This commit is contained in:
parent
8c54b83913
commit
a0eaf2d41f
124
know-how/software/linux/_posts/2008-07-15-initscripts.md
Normal file
124
know-how/software/linux/_posts/2008-07-15-initscripts.md
Normal file
@ -0,0 +1,124 @@
|
||||
---
|
||||
title: event.d/init.d script
|
||||
layout: default
|
||||
created: 2008-07-15 23:49:48 +0200
|
||||
updated: 2008-07-15 23:49:48 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- system
|
||||
- initd
|
||||
- boot
|
||||
---
|
||||
event.d script
|
||||
==============
|
||||
|
||||
This is an event.d-script for the new Ubuntu [Upstart](http://upstart.ubuntu.com/).
|
||||
|
||||
The event gets started/respawned on runlevels 2-5. If you change to level 0, 1 or 6, the process gets stopped/killed.
|
||||
Manual start/stop works through the same commands ˋstartˋ and ˋstopˋ. With ˋstatusˋ you can check the status.
|
||||
|
||||
{{{
|
||||
# manages Solr search engine
|
||||
|
||||
start on runlevel [2345]
|
||||
stop on runlevel [016]
|
||||
|
||||
kill timeout 30
|
||||
respawn
|
||||
|
||||
script
|
||||
cd /home/sysadmin/extension/ezfind/java
|
||||
exec /usr/bin/java -jar start.jar
|
||||
end script
|
||||
}}}
|
||||
|
||||
|
||||
init.d script
|
||||
=============
|
||||
|
||||
This does the same using the traditional init.d-way.
|
||||
|
||||
After creation of the script in ˋ/etc/init.dˋ you also have to make the symlinks in the ˋrc.2ˋ..ˋrc.5ˋ-directories.
|
||||
|
||||
{% highlight bash %}
|
||||
#!/bin/sh
|
||||
|
||||
### BEGIN INIT INFO
|
||||
# Provides: solr
|
||||
# Required-Start:
|
||||
# Required-Stop:
|
||||
# Default-Start: 2 3 4 5
|
||||
# Default-Stop: 0 1 6
|
||||
# Short-Description: start Solr daemon
|
||||
### END INIT INFO
|
||||
|
||||
|
||||
# Defaults
|
||||
RUN_MODE="daemons"
|
||||
|
||||
JAVA=/usr/bin/java
|
||||
DAEMONDIR=/home/sysadmin/extension/ezfind/java
|
||||
DAEMON=start.jar
|
||||
PIDDIR=/var/run
|
||||
SOLRPID=$PIDDIR/solr.pid
|
||||
|
||||
# See if the daemon is there
|
||||
test -x $JAVA -a -x $DAEMONDIR/$DAEMON || exit 0
|
||||
|
||||
. /lib/lsb/init-functions
|
||||
|
||||
case "$1" in
|
||||
start)
|
||||
log_daemon_msg "Starting Solr daemon"
|
||||
log_progress_msg "solr"
|
||||
# Make sure we have our PIDDIR, even if it's on a tmpfs
|
||||
install -o root -g root -m 755 -d $PIDDIR
|
||||
if ! start-stop-daemon --start --chdir $DAEMONDIR --quiet --pidfile $SOLRPID --make-pidfile --background --exec $JAVA -- -jar $DAEMON; then
|
||||
log_end_msg 1
|
||||
exit 1
|
||||
fi
|
||||
log_end_msg 0
|
||||
;;
|
||||
stop)
|
||||
log_daemon_msg "Stopping Solr daemon"
|
||||
log_progress_msg "solr"
|
||||
|
||||
start-stop-daemon --stop --quiet --pidfile $SOLRPID
|
||||
# Wait a little and remove stale PID file
|
||||
sleep 1
|
||||
if [ -f $SOLRPID ] && ! ps h `cat $SOLRPID` > /dev/null
|
||||
then
|
||||
# Stale PID file (solr was succesfully stopped),
|
||||
# remove it
|
||||
rm -f $SOLRPID
|
||||
fi
|
||||
|
||||
log_end_msg 0
|
||||
|
||||
;;
|
||||
restart|force-reload)
|
||||
$0 stop
|
||||
sleep 1
|
||||
$0 start
|
||||
;;
|
||||
status)
|
||||
pidofproc -p $SOLRPID $JAVA >/dev/null
|
||||
status=$?
|
||||
if [ $status -eq 0 ]; then
|
||||
log_success_msg "SOLR is running"
|
||||
else
|
||||
log_failure_msg "SOLR is not running"
|
||||
fi
|
||||
exit $status
|
||||
;;
|
||||
*)
|
||||
echo "Usage: /etc/init.d/solr {start|stop|restart|force-reload|status}"
|
||||
exit 1
|
||||
;;
|
||||
esac
|
||||
|
||||
exit 0
|
||||
{% endhighlight %}
|
@ -0,0 +1,22 @@
|
||||
---
|
||||
title: Partition Numbering
|
||||
layout: default
|
||||
created: 2008-08-07 22:13:23 +0200
|
||||
updated: 2008-08-07 22:13:23 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- hdd
|
||||
- partitioning
|
||||
---
|
||||
After removal of the first primary partition, you might notice, that the names of the remaining partitions didn't
|
||||
change. ˋ/dev/sda2ˋ stays ˋ/dev/sda2ˋ. To renumber the partition, use ˋfdiskˋ and create a new primary partition no. 1
|
||||
which is located behind ˋsda2ˋ. You might want to delete your swap partition, create a new one in partition slot no. 1.
|
||||
|
||||
Now enter the expert menu of fdisk and type <kbd>f</kbd> to fix the partition table. The partitions will be renumbered
|
||||
according to their position on disk. After that delete the temporary partition and re-create your swap. Don't forget to
|
||||
write the new partition table to disk.
|
||||
|
||||
Afterwards, update your ˋ/boot/grub/menu.lstˋ, maybe ˋ/etc/fstabˋ and do a ˋgrub-installˋ.
|
@ -0,0 +1,17 @@
|
||||
---
|
||||
title: MC Startup Delay
|
||||
layout: default
|
||||
created: 2008-08-13 22:36:06 +0200
|
||||
updated: 2008-08-13 22:36:06 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- mc
|
||||
---
|
||||
If Midnight Commander needs several seconds to startup, check the ˋinterfacesˋ line in your ˋsmb.confˋ. According to [this page](http://osdir.com/ml/gnome.apps.mc.general/2006-09/msg00057.html),
|
||||
the built-in Samba code of *mc* is outdated and doesn't recognize device names like ˋeth0ˋ or ˋloˋ as the newer
|
||||
*smbclient* does. So it tries to resolve those into IPs which takes ages until they time out.
|
||||
|
||||
Replace the devices by their respective netmasks (e.g. ˋ192.168.1.0/24ˋ) and *mc* will startup instantly.
|
65
know-how/software/linux/_posts/2008-08-13-wol.md
Normal file
65
know-how/software/linux/_posts/2008-08-13-wol.md
Normal file
@ -0,0 +1,65 @@
|
||||
---
|
||||
title: Wake-on-LAN
|
||||
layout: default
|
||||
created: 2008-08-13 22:18:28 +0200
|
||||
updated: 2008-08-13 22:18:28 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- networking
|
||||
---
|
||||
Preparing to go asleep
|
||||
======================
|
||||
|
||||
To make Linux not shut down the network interface upon *halt*, edit the file ˋ/etc/init.d/haltˋ, find the line with the
|
||||
ˋhaltˋ command and remove the parameter ˋ-iˋ if there. This parameter does ˋifdownˋ on all networking interfaces. As the
|
||||
manpage for *halt* states, this is unneccessary for newer kernels - also it disables WOL.
|
||||
|
||||
The second step is to make sure, your card supports WOL. To find out, issue the ˋsudo ethtool eth0ˋ command. You should
|
||||
get something like this:
|
||||
|
||||
{{{
|
||||
Settings for eth0:
|
||||
Supported ports: [ TP MII ]
|
||||
Supported link modes: 10baseT/Half 10baseT/Full
|
||||
100baseT/Half 100baseT/Full
|
||||
Supports auto-negotiation: Yes
|
||||
Advertised link modes: 10baseT/Half 10baseT/Full
|
||||
100baseT/Half 100baseT/Full
|
||||
Advertised auto-negotiation: Yes
|
||||
Speed: 10Mb/s
|
||||
Duplex: Half
|
||||
Port: MII
|
||||
PHYAD: 1
|
||||
Transceiver: internal
|
||||
Auto-negotiation: on
|
||||
Supports Wake-on: g
|
||||
Wake-on: g
|
||||
Current message level: 0x00000007 (7)
|
||||
Link detected: no
|
||||
}}}
|
||||
|
||||
The important lines are the ˋSupports Wake-onˋ and ˋWake-onˋ ones. The "ˋgˋ" means it is enabled for MagicPacket™.
|
||||
If not, you should manually call the command:
|
||||
|
||||
ethtool -s eth0 wol g
|
||||
|
||||
This should enable WOL for the card. If this works, you have to issue this command after every bootup as the state will
|
||||
be back to disabled then. You might want to create a startup script.
|
||||
|
||||
|
||||
Waking remote PCs
|
||||
=================
|
||||
|
||||
The simple way is to use ˋwakeonlanˋ which only supports MagicPacket™.
|
||||
|
||||
For a PC in a Class C network, use a call like this:
|
||||
|
||||
wakeonlan -i 192.168.1.255 de:ad:be:ef:ca:fe
|
||||
|
||||
This would send the packet to the 192.168.1.x subnet and the PC with the specified MAC address should wake up.
|
||||
|
||||
**Note:** Some nVidia chipsets require the MAC address to be specified in reverse order. In the example this would
|
||||
be ˋfe:ca:ef:be:ad:deˋ.
|
@ -0,0 +1,16 @@
|
||||
---
|
||||
title: Updating X11 Fontcache
|
||||
layout: default
|
||||
created: 2008-08-15 11:14:03 +0200
|
||||
updated: 2008-08-15 11:14:03 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- fonts
|
||||
---
|
||||
After adding some fonts to the ˋ/usr/share/fontsˋ directories, you have to re-login to see the added fonts. To update
|
||||
the fontcache without a log-cycle, use the following command:
|
||||
|
||||
sudo fc-cache -fv
|
20
know-how/software/linux/_posts/2008-08-21-syslogd-for-lan.md
Normal file
20
know-how/software/linux/_posts/2008-08-21-syslogd-for-lan.md
Normal file
@ -0,0 +1,20 @@
|
||||
---
|
||||
title: SyslogD for LAN
|
||||
layout: default
|
||||
created: 2008-08-21 10:39:59 +0200
|
||||
updated: 2008-08-21 10:39:59 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- syslog
|
||||
- monitoring
|
||||
- networking
|
||||
---
|
||||
To let the *syslogd* also receive messages from your local network, edit the file ˋ/etc/default/syslogdˋ and modify the
|
||||
last line so that it looks like this:
|
||||
|
||||
SYSLOGD="-r"
|
||||
|
||||
Restart the *sysklogd* and watch your ˋ/var/log/messagesˋ.
|
23
know-how/software/linux/_posts/2008-08-21-wins.md
Normal file
23
know-how/software/linux/_posts/2008-08-21-wins.md
Normal file
@ -0,0 +1,23 @@
|
||||
---
|
||||
title: NetBIOS/WINS support
|
||||
layout: default
|
||||
created: 2008-08-21 10:36:55 +0200
|
||||
updated: 2008-08-21 10:45:41 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- networking
|
||||
- netbios
|
||||
- wins
|
||||
---
|
||||
To enable lookup of WINS-names in Ubuntu, edit the file ˋ/etc/nsswitch.confˋ and find the line:
|
||||
|
||||
hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4
|
||||
|
||||
Append ˋwinsˋ to the end of the line so that it looks like this:
|
||||
|
||||
hosts: files mdns4_minimal [NOTFOUND=return] dns mdns4 wins
|
||||
|
||||
From now on you can also use NetBIOS names to address PCs in your LAN.
|
@ -0,0 +1,50 @@
|
||||
---
|
||||
title: Evolution/ClamAV integration
|
||||
layout: default
|
||||
created: 2008-08-23 18:46:33 +0200
|
||||
updated: 2008-08-23 18:46:33 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
- security
|
||||
- evolution
|
||||
- clamav
|
||||
- antivirus
|
||||
---
|
||||
To scan incoming mails for viruses, create to following script somewhere in your system:
|
||||
|
||||
{% highlight bash %}
|
||||
#!/bin/bash
|
||||
# Fred Blaise <chapeaurouge AT madpenguin DOT org>
|
||||
# This program is free software; you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation; either version 2 of the License, or
|
||||
# (at your option) any later version.
|
||||
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program; if not, write to the Free Software
|
||||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston,
|
||||
# MA 02111-1307 USA
|
||||
|
||||
FILE=/tmp/$$_outclam.tmp
|
||||
clamdscan - 1>$FILE
|
||||
|
||||
if [ $? -eq 1 ]; then
|
||||
STRING=$(grep "FOUND" $FILE |cut -d: -f2)
|
||||
zenity --warning --title="Evolution: Virus detected" --text="$STRING" &
|
||||
|
||||
exit 1
|
||||
fi
|
||||
|
||||
exit 0
|
||||
{% endhighlight %}
|
||||
|
||||
Now setup Evolution's Incoming mail filters to pipe mails through your newly created script. If the return value is not
|
||||
zero, a virus was detected and you might want to move the mail to *Trash* or a special folder.
|
27
know-how/software/linux/_posts/2008-08-23-optimizing.md
Normal file
27
know-how/software/linux/_posts/2008-08-23-optimizing.md
Normal file
@ -0,0 +1,27 @@
|
||||
---
|
||||
title: Optimizing Linux
|
||||
layout: default
|
||||
created: 2008-08-05 16:45:57 +0200
|
||||
updated: 2008-08-23 18:48:33 +0200
|
||||
toc: false
|
||||
tags:
|
||||
- know-how
|
||||
- software
|
||||
- linux
|
||||
---
|
||||
At [Ubuntu Unleashed](http://www.ubuntu-unleashed.com/2008/04/tweak-and-optimize-ubuntu-linux-boot.html) you can find a
|
||||
document about different settings to optimize startup times of the system and applications itself.
|
||||
|
||||
The ˋnoatimeˋ and ˋnodiratimeˋ settings are unneccessary in Hardy as the default option ˋrelatimeˋ only updates the
|
||||
*access time* if the file has been modified after the last access timestamp.
|
||||
|
||||
You can enable the full power of the [upstart](https://launchpad.net/upstart) manager by enabling multi-threading.
|
||||
In ˋ/etc/init.d/rcˋ at line 24, set ˋCONCURRENCY=shellˋ. But beware of slight problems upon booting. Some services might
|
||||
be started before depending services are. Also some lines upon startup are printed twice. If you have problems
|
||||
getting your machine up and running, change it back to ˋnoneˋ.
|
||||
|
||||
Another nice feature is adding the ˋprofileˋ option to the kernel line upon boot. The bootup will take longer than
|
||||
usual but the readahead-daemon will catalog all needed files and on the next boot (without that parameter), all needed
|
||||
files will be preloaded before boot.
|
||||
|
||||
On Desktops with much RAM, the ˋ[preload](http://sf.net/projects/preload)ˋ daemon also speeds up working.
|
Loading…
Reference in New Issue
Block a user