Assuming your hostname is darkstar, add these lines to your /etc/hosts:
# fix libreoffice slow start
127.0.0.1 darkstar.(none)
Be sure that your hostname is the same both in /etc/hostname and in /etc/hosts .
Thanks for www.nixp.ru.
Get rid of LibreOffice slow start
March 26th, 2014Asterisk 12 Notes
March 24th, 2014To use ‘Gosub‘ (and also ‘Return‘, ‘GosubIf‘ and ‘StackPop‘) application you must load app_stack.so .
To make calling between endpoints possible, you must load bridge_simple.so .
To originate calls from CLI you must load res_clioriginate.so (assuming app_originate.so is already loaded).
Using ‘screen’ for multiple SSH sessions from a remote computer
March 23rd, 20141. Log in to the remote server.
2. Type 'screen'. The virtual screen #0 will be opened. We’ll use it as a starting point for creating other screens.
3. Type 'screen -t server1'. This command will open one more virtual screen with title ‘server1’, we will use it for entering the server1, for example ‘ssh server1’.
4. Press Control-a and then ” (double inverted commas)
This command will list all your virtual screens. You may select any of them moving with up/down arrows and then pressing enter. Enter the screen #0.
5. From screen #0 we can create one more screen, for example 'screen -t server2'.
6. Jumping from one screen to some other can be done with Ctrl-a and then ” or Ctrl-a and the number of screen. In our case – 0, 1 and 2.
7. You may close any screen with Ctrl-D or 'exit', like usual.
Another scenario:
1. screen -S 1st_session_name to start screen with some session name.
2. Ctrl-a d to detach from session.
3. screen -ls to list all sessions and their pids.
4. screen -r %pid% to reconnect to a session with %pid%.
find
March 6th, 2014Find files older than 15 days and list them:
[root@staff /root]# find /var/squid/logs/ -mtime +15 -execdir ls -lh {} \;
-rw-r----- 1 squid squid 91k Feb 16 20:46 /var/squid/logs/cache.log.17
-rw-r----- 1 squid squid 108M Feb 17 00:00 /var/squid/logs/access.log.17
-rw-r----- 1 squid squid 122M Feb 16 00:00 /var/squid/logs/access.log.18
-rw-r----- 1 squid squid 355M Feb 19 00:00 /var/squid/logs/access.log.15
-rw-r----- 1 squid squid 137k Feb 18 23:55 /var/squid/logs/cache.log.15
-rw-r----- 1 squid squid 275M Feb 18 00:00 /var/squid/logs/access.log.16
-rw-r----- 1 squid squid 145k Feb 17 21:49 /var/squid/logs/cache.log.16
List files modified during last 5 minutes:
find /some/path/ -type f -mmin -5 -execdir ls -l {} \;
Find files bigger than 2 kilobytes in .mc/ directory:
find .mc/ -type f -size +2000c .mc/ini
or:
find .mc/ -type f -size +2k .mc/ini
Find files smaller than 80 bytes in .mc/ directory:
vn ~ # find .mc/ -type f -size -80c .mc/Tree .mc/cedit/cooledit.clip
Handy one-liner for searching a file with wildcard, case-insensitive, in 2 directories simultaneously (assuming the file contains ‘Yutong’):
srv ~ # find /storage/sounds/{cars,ru/cars} -iname yut\*
/storage/sounds/cars/Yutong.wav
/storage/sounds/ru/cars/Yutong.wav
Find files with “+380” in their name which were created on October 13, 2015 and copy them to /home/lexus/:
find /storage/cluster/ready/ -name "*+380*" -type f -newermt 2015-10-13 ! -newermt 2015-10-14 -execdir cp {} /home/lexus/ \;
WordPress: disabling quotes convertion
February 16th, 2014You have to edit the file default-filters.php which is located here:
/your_WP_root_directory/wp-includes/default-filters.php
Comment out the line:
add_filter( 'the_content', 'wptexturize' );
Based on this topic: https://wordpress.org/support/topic/please-give-us-the-option-to-turn-of-smart-quotes .
awk
February 16th, 2014Print the first line:
cat somefile.txt | awk ‘{print $1}’
… and see the number of active calls on Asterisk PBX:
asterisk -rx 'core show calls' | head -n 1 | awk '{print $1}'
Print all but first 6 columns of the file:
cat somefile.txt | awk ‘{$1=$2=$3=$4=$5=$6=””; print $0}’
… and see who’s trying to connect to 5060/TCP and 22/TCP (some fields reduced):
root@vds:~# tail -n 2 /var/log/syslog | awk '{$1=$2=$3=$4=$5=$6=""; print $0}'
iptables denied Asterisk IN=eth0 SRC=69.60.119.204 DST=XX.XX.YY.ZZ PROTO=UDP SPT=5072 DPT=5060
iptables denied SSH IN=eth0 SRC=222.186.62.39 DST=XX.XX.YY.ZZ PROTO=TCP SPT=6000 DPT=22
By default, awk doesn’t separate columns. To do that, use comma:
root@vds:~# grep Aster /var/log/syslog | awk '{print $1,$2,$3,$9,$13}'
Feb 17 07:03:25 Asterisk SRC=74.118.193.77
Feb 17 07:13:23 Asterisk SRC=85.25.194.185
Feb 17 07:56:31 Asterisk SRC=188.138.34.254
Feb 17 08:12:02 Asterisk SRC=200.12.49.147
PS: all these IPs are bad guys. They’re trying to connect to my SSH and SIP ports. So, I do not hide their addresses :)
Update:
In case you’ve got an output like
“123456”
“234567”
“345678”
and want to get rid of first and last symbols:
rev input_file.txt | cut -c2- | rev | cut -c2-
In case your columns have some other delimiters than space, p.e. comma, specify it:
cat file.txt | awk -F',' '{print $3}'
Debian/Ubuntu: set default applications (both X11 and console)
February 7th, 2014To set the default web browser type:
sudo update-alternatives --config x-www-browser
This will lead to:
lexus@lexus:~$ sudo update-alternatives --config x-www-browser There are 3 choices for the alternative x-www-browser (providing /usr/bin/x-www-browser). Selection Path Priority Status ------------------------------------------------------------ 0 /usr/bin/google-chrome 200 auto mode * 1 /usr/bin/firefox 40 manual mode 2 /usr/bin/google-chrome 200 manual mode 3 /usr/bin/opera 200 manual mode Press enter to keep the current choice[*], or type selection number:
To set default editor:
update-alternatives --config editor
To edit (or leave with defaults) all variants, use:
sudo update-alternatives --all
Asterisk: block inbound call by CALLERID(num) (AEL syntax)
January 31st, 2014One number :
73522123456 =>
{
if(${CALLERID(num)} = 74995008119)
{
Hangup;
}
Dial(IAX2/iaxpeer/somedevice);
}
Several numbers:
73522123456 =>
{
switch (${CALLERID(num)}) {
case 74957805170:
NoOp(Block call from Susan);
Hangup();
break;
pattern [78]4957805174:
NoOp(Block call from Anna);
Hangup();
break;
pattern [78]4957805061:
NoOp(Block call from Lily );
Hangup();
break;
pattern [78]495780508X:
NoOp(Block call from Samantha);
Hangup();
break;
default:
Set(CDR(accountcode)=some-accountcode);
Dial(SIP/somepeer/tomsphone01,,r);
}
}
pattern – here you may use constructions like [167] and/or 123X.
case – is exact sequence of symbols.
FreeSWITCH installation
January 17th, 2014Download latest stable release (January, 2014) http://files.freeswitch.org/freeswitch-1.2.17.tar.bz2 to /usr/src/.
I have the basic Debian 7.3 Wheezy installation.
I needed these dependences: apt-get install zlib zlib-dev zlib1g-dev libjpeg62 libjpeg62-dev libjpeg8-dev libcurses-perl libncurses5-dev libssl-dev
Then:
./configure
make install
make cd-sounds-ru-install
make cd-moh-ru-install
make cd-moh-install
Symlinks:
ln -s /usr/local/freeswitch/bin/fs_cli /usr/local/bin/fs_cli
ln -s /usr/local/freeswitch/bin/freeswitch /usr/local/bin/freeswitch
Fire!:
fs_cli -l 5
FreeSWITCH: dial through VoIP provider
January 16th, 2014Register against megavoip.com sbc:
Add a file sip.megavoip.com.xml to /usr/local/freeswitch/conf/sip_profiles/external/ to dial through Megavoip.com:
Register against multifon.ru sbc:
Add a file multifon.xml to /usr/local/freeswitch/conf/sip_profiles/external/ to dial through multifon.ru:
Now it’s time to check if the REGISTER is OK.
Execute in the FS CLI:
freeswitch@internal> sofia status
Name Type Data State
=================================================================================================
external profile sip:mod_sofia@10.145.13.21:5080 RUNNING (0)
external::example.com gateway sip:joeuser@example.com NOREG
external::sip.megavoip.com gateway sip:megavoip_username@sip.megavoip.com REGED
external::multifon gateway sip:79221234567@sbc.multifon.ru REGED
10.145.13.21 alias internal ALIASED
internal profile sip:mod_sofia@10.145.13.21:5060 RUNNING (0)
internal-ipv6 profile sip:mod_sofia@[::1]:5060 RUNNING (0)
=================================================================================================
3 profiles 1 alias
or:
freeswitch@internal> sofia status gateway
Profile::Gateway-Name Data State IB Calls(F/T) OB Calls(F/T)
=================================================================================================
external::example.com sip:joeuser@example.com NOREG 0/0 0/0
external::sip.megavoip.com sip:megavoip_username@sip.megavoip.com REGED 0/0 0/0
external::multifon sip:79221234567@sbc.multifon.ru REGED 0/1 0/0
=================================================================================================
3 gateways: Inbound(Failed/Total): 0/1,Outbound(Failed/Total):0/0
or with more info:
freeswitch@internal> sofia status gateway sip.megavoip.com
...
Dial through (let’s dial via megavoip.com):
Add to /usr/local/freeswitch/conf/dialplan/default.xml to the beginning of ‘default’ context:
