Tugriceri Web Notes

Yum Proxy settings

by on Mar.26, 2011, under Linux, Yum

[root@localhost ~]# vi /etc/yum.conf

  • proxy=http://10.129.0.23:8080
  • http_proxy=http://10.129.0.23:8080

[root@localhost ~]# declare -x ftp_proxy=”http://10.129.0.23:8080″
[root@localhost ~]# declare -x http_proxy=”10.129.0.23:8080″

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Corrupted RPM database

by on Feb.26, 2011, under Linux

 1019  rm -f /var/lib/rpm/__db*
 1020  rpm -vv –rebuilddb

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Get Cisco router interface index numbers

by on Feb.16, 2011, under Cisco

show snmp mib ifmib ifindex
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SSL Weak Cipher and SSLv2 tests

by on Jan.22, 2011, under Security

echo ‘GET HTTP/1.0’ | openssl s_client -ssl3 -cipher LOW -connect www.tugriceri.com:443
echo ‘GET HTTP/1.0’ | openssl s_client -ssl2 -cipher LOW -connect www.tugriceri.com:443
echo ‘GET HTTP/1.0’ | openssl s_client -ssl2 -connect www.tugriceri.com:443

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Hide Apache version

by on Jan.21, 2011, under HTTP, Linux

vi httpd.conf
ServerSignature Off
ServerTokens Prod

apachectl restart

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LVM Create

by on Jan.21, 2011, under Linux, LVM

 1031  dmsetup ls –tree
 1040  dmsetup remove /dev/dm-11 (silinen partition ın dmden kalkmaması sebebi ile)
 1041  fdisk -l
 1044  pvcreate /dev/mapper/mpath11
 1045  pvdisplay
 1046  vgcreate VolGroupBackup /dev/mapper/mpath11
 1047  pvdisplay
 1048  vgdisplay
 1049  lvcreate -L 699.99G VolGroupBackup lvBackup
 1050  lvcreate -L 699.99G VolGroupBackup -n lvBackup
 1051  lvdisplay
 1052  ls /dev/VolGroupBackup/lvBackup
 1053  ls /dev/mapper/
 1054  mkfs.ext3 /dev/mapper/VolGroupBackup-lvBackup
 1058  mount
 1059  mount /dev/mapper/VolGroupBackup-lvBackup /mnt/backup/

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Socket proxy with ssh

by on Dec.26, 2010, under Shell, SSH

ssh -D 7200 root@hostname

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Find WWN’s of HBA

by on Dec.24, 2010, under Linux

systool -av -c fc_host

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uvscan process is too slow

by on Nov.26, 2010, under Antivirus, Security

# time uvscan –version
McAfee VirusScan Command Line for Linux64 Version: 6.0.3.356
Copyright (C) 2010 McAfee, Inc.
(408) 988-3832 LICENSED COPY – November 26 2010

AV Engine version: 5400.1158 for Linux64.
Dat set version: 5985 created May 17 2010
Scanning for 619012 viruses, trojans and variants.

real    0m9.501s
user    0m9.365s
sys     0m0.132s

# uvscan –decompress
McAfee VirusScan Command Line for Linux64 Version: 6.0.3.356
Copyright (C) 2010 McAfee, Inc.
(408) 988-3832 LICENSED COPY – November 26 2010

AV Engine version: 5400.1158 for Linux64.
Dat set version: 5985 created May 17 2010
Scanning for 619012 viruses, trojans and variants.

This program is more than 5 months old. New viruses come out all the
time – we would suggest that you upgrade your copy.

Time: 00:00.00

# time uvscan –version
McAfee VirusScan Command Line for Linux64 Version: 6.0.3.356
Copyright (C) 2010 McAfee, Inc.
(408) 988-3832 LICENSED COPY – November 26 2010

AV Engine version: 5400.1158 for Linux64.
Dat set version: 5985 created May 17 2010
Scanning for 619012 viruses, trojans and variants.

real    0m2.801s
user    0m2.664s
sys     0m0.135s

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Mysql Connection limit

by on Oct.04, 2010, under Mysql

SET GLOBAL max_connections = 200;

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w32 rediscover

by on Sep.15, 2010, under Windows

w32tm /resync /rediscover

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Text file download from apache

by on Sep.02, 2010, under HTTP

<Files *.txt>
ForceType application/octet-stream
Header set Content-Disposition attachment
</Files>

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Multipath – Volume Groups

by on Jul.26, 2010, under Linux

Multipath in SAN den diskleri hatalı gormesi sebebi ile volume gruplarda problem oluyor. Diskleri düzgün görmesi için config i flush layıp tekrardan dm leri oluşturmalı ve volume groupları tekrar enable etmeliyiz.

/sbin/multipath -F
/sbin/multipath
/sbin/vgchange -a y
mount /dev/vg0/lvol0 /mnt/data

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crt to der

by on Apr.30, 2010, under Security

openssl x509 -in auth_tugriceri_com.crt -out auth_tugriceri_com.der -outform DER

openssl rsa -in www_tugriceri_com.key -outform DER -out www_tugriceri_com-der.key

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Opennms Reindex database

by on Apr.30, 2010, under Uncategorized

<font><font><font><font face="Arial, Helvetica, sans-serif">psql -d opennms -c “REINDEX DATABASE opennms FORCE”
vacuumdb -v opennms -U opennms -W
</font></font></font></font>
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Resize LV

by on Jan.05, 2010, under Uncategorized

pvresize -v -d /dev/dm-0
vgdisplay
lvextend -L400G /dev/VGD/datalv
resize2fs /dev/VGD/datalv
e2fsck -f /dev/VGD/datalv
resize2fs /dev/VGD/datalv
mount /dev/VGD/datalv /mnt/data

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Sftp chroot settings

by on Oct.17, 2009, under Security, SSH

cat /etc/ssh/sshd_config

Subsystem sftp internal-sftp

Match group sftponly
         ChrootDirectory /chroot
         X11Forwarding no
         AllowTcpForwarding no
         ForceCommand internal-sftp

cat /etc/passwd
testuser:x:500:504::/:/bin/bash
sftponly:x:504:testuser

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Directory sync with rsync over ssh

by on May.29, 2009, under Linux, Shell

<a name="linuxsvrhack-CHP-3-SECT-2">root@emre:~# <b class="emphasis-bold">rsync -ave ssh server:/opt/dir /opt</b></a>

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Transponder Lists for Kaffeine

by on May.20, 2009, under DVB, Linux, Shell

There is a link that include transponder lists.
http://www.fastsatfinder.com/transponders.html

This script will convert fastsatfinder’s transponder lists to kaffeine format.

I used 0130.ini file for Hotbird.

cat 0130.ini | awk -F “=” ‘{print $2}’ > out

for aa in `cat out`
do
echo $aa |sed ‘s/,34/,3\/4/; s/,56/,5\/6/; s/,23/,2\/3/’ | awk -F “,” ‘{print “S”” “$1″000 “$2” “$3″000 “$4″”}’ >> Hotbird-13.0E
done

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Nec firmware update under linux

by on Apr.25, 2009, under Hardware, Linux

Nec firmware update under linux
Please download necflash utility from http://binflash.cdfreaks.com/
[root@frost local]# ./necflash -scan
Binflash – NEC version – (C) by Liggy and Herrie
Visit http://binflash.cdfreaks.com

List of supported devices:

Device   : /dev/sg3
Vendor   : Optiarc
Model    : DVD RW AD-5170A
Firmware : 1.11

Device   : /dev/scd0
Vendor   : Optiarc
Model    : DVD RW AD-5170A
Firmware : 1.11

This is our dvdrom info.

We should get a backup our current firmware with this command. sg3 is our device.
./necflash -dump Optiarc-AD-5170A-1.11.bin /dev/sg3

Following links have Liggy’s and Dee’s modified firmwares. I want to use it. You can easly find original firmware.
http://liggydee.cdfreaks.com/page/en/Optiarc-AD-5170A/

[root@frost local]# unzip 114bt_rpc1.zip
Archive:  114bt_rpc1.zip                
This file was downloaded from http://liggydee.cdfreaks.com
Please read the instructions included in this zipfile and
on our website at http://liggydee.cdfreaks.com/page/5170/
  inflating: readme.txt                                  
  inflating: 114bt_rpc1.bin                              
  inflating: Liggy’s and Dee’s Website.url  

[root@frost local]# ./necflash -flash -v -s 114bt_rpc1.bin /dev/sg3

Vendor: Optiarcberat sitesi
Identification: DVD RW AD-5170A
Version: 1.14

Remember no one can be held responsible for any kind of failure!
Are you sure you want to proceed? (y/n)

if you get “Error submitting checksum” error. You should set your device to pio mode. I couldnt set with hdparm and i set it on bios.

[root@frost local]# ./necflash -scan
Binflash – NEC version – (C) by Liggy and Herrie
Visit http://binflash.cdfreaks.com

List of supported devices:

Device   : /dev/sg3
Vendor   : Optiarc
Model    : DVD RW AD-5170A
Firmware : 1.14

Device   : /dev/scd0
Vendor   : Optiarc
Model    : DVD RW AD-5170A
Firmware : 1.14

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Disabling the mode button on the catalyst devices

by on Apr.24, 2009, under Cisco, Network

Disable the Express Setup feature so that the switch configuration cannot be deleted if the Mode button is mistakenly or maliciously pressed for 10 seconds.

In order to disable the Express Setup feature, issue the “no setup express” command in global config mode.

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How to test wbinfo_group.pl via command line

by on Apr.10, 2009, under Shell, Squid

[root@proxy squid]# echo “emre Standard_Access” | /usr/lib/squid/wbinfo_group.pl -d

Debugging mode ON.
Got emre Standard_Access from squid
Standard Access
User:  -emre-
Group: -Standard Access-
SID:   -S-1-5-21-2095213794-1237320697-2031155483-2732-
GID:   -16777226-
Sending OK to squid
OK

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remove multi space with sed

by on Apr.10, 2009, under Shell

cat ISALOG_20090302_WEB_000.w3c | sed ‘s/\s/ /g

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run command via ssh (remote)

by on Apr.08, 2009, under Linux, Security, Shell

cat ls_keykur.sh | ssh root@10.94.12.3
ssh root@10.94.12.3 “date”

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snmpwalk example

by on Apr.08, 2009, under Linux

snmpwalk -v 2c -c hoba 1.12.0.68 system

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