tag:blogger.com,1999:blog-73056623354505753102026-05-31T00:28:37.423+05:30Unknownnoreply@blogger.comBlogger193125tag:blogger.com,1999:blog-7305662335450575310.post-80214480675586403262021-11-06T14:36:00.004+05:302021-11-06T14:46:58.288+05:30

Enable ssh from Services pageIn your windows or linux machine, under the user home folderCreate a folder ".ssh" (dot ssh)Create a file named "config" inside the .ssh folderContents of config file    Host  192.168.1.1 ddwrt.lan        KexAlgorithms +diffie-hellman-group1-sha1        user root        port

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-57607123537897663712020-12-11T17:49:00.000+05:302020-12-11T17:49:14.757+05:30

My router is flashed with dd-wrt which uses the dnsmaq daemon.About dnsmasq? dnsmasq is a lightweight DNS, TFTP and DHCP server. It is intended to provide coupled DNS and DHCP service to a LAN. Dnsmasq accepts DNS queries and either answers them from a small, local, cache or forwards them to a real, recursive, DNS server. To flush out dns cache the dnsmasq daemon has to be

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-10150992261771305812020-09-16T20:15:00.003+05:302020-09-16T20:15:46.238+05:30

Setting up virtual environment in ubuntu lts.Installing virtualenv: Install into user folder instead of system widesudo apt-get install python3-pippython3 -m pip install --user virtualenvwrapperConfig virtualenvwrappernano ~/home/username/.bashrcAdd below lines to .bashrc#setup virtualenvexport WORKON_HOME=$HOME/.virtualenvsexport ROJECT_HOME=$HOME/Develexport VIRTUALENVWRAPPER_PYTHON = /usr/bin/

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-40555761109034979492020-09-15T21:18:00.000+05:302020-09-15T21:18:22.206+05:30

 Server ubuntu 18.04LTSMysql mysql-server v5.7Error: edit mysql config filesudo nano /etc/mysql/my.cnfAdd to my.cnf[mysqld]skip-grant-tablesrestart mysqlsudo systemctl restart mysqllogin to mysql and run command$ mysql -u root UPDATE mysql.user SET authentication_string=PASSWORD('YOURNEWPASSWORD'), plugin='mysql_native_password' WHERE User='root';exit;disable the

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-31366343836832831612020-09-14T20:48:00.003+05:302020-09-14T20:53:04.600+05:30

Note : Internet Browser will issue warning  on self signed certificates.Self signed secure socket layer (TLS/SSL) certificate, to enable https on apache2 server. Even though the server is on lan, security is a concern when there is a large group of nodes. A zero cost self signed certificate is generated and all http request is rerouted to httpsCreate a folder to hold certificatesudo mkdir /

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-36916148014164865132020-09-14T18:32:00.000+05:302020-09-14T18:32:45.860+05:30

A server is setup on local lan which acts as a development server, backup server, a secure domain to manage database servers and host other important data on local lan. The setup is same for a valid FQDN which can be accessed from WAN.Server : Ubuntu 18.04 LTSApplication server :  LAMP stackMain site path : /var/www/htmldomain name : myserver.lanVirtual host path : &

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-88065242122624287522016-10-10T13:06:00.002+05:302016-10-10T13:08:05.872+05:30

On updating my wordpress user password I forgot... Refering : https://codex.wordpress.org/Resetting_Your_Password I opted for the ftp option but instead of downloading and uploading I logged in through ssh and edited the file. Super easy 1. Login to your site via FTP / SSH  and download or edit your active theme's functions.php file. 2. Edit the file and add this code to it,

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-76631778379566211682016-04-12T19:43:00.000+05:302016-04-12T19:44:07.368+05:30

I changed the dd-wrt router password and could no longer access the device. Lucky, I was able to login to the router with ssh and default username and my old password. This means that the web gui password was corrupted. With the below steps I was able to gain access to the routers web gui. Login to the router via ssh. Type in nvram set http_passwd= Then type in nvram commit open

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-85617034863451358122016-01-20T23:00:00.003+05:302016-01-20T23:14:13.642+05:30

Remove installed ppa from ubuntu system. Install  ppa-purge  sudo apt-get install ppa-purge Run command in terminal to list all configured repositories and ppa in readable format apt-cache policy | grep http | awk '{print $2 $3}' | sort -u Uninstall the ppa with syntax : sudo ppa-purge ppa:<repository-name>/<subdirectory> example in my case sudo

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-79946868131384421952015-06-11T15:23:00.002+05:302015-06-11T15:30:05.826+05:30

I was playing with the webmin of dd-wrt and lost access to it. https://router-ip throws up connection error http://router-ip throws up invalid url Fortunately I had the ssh port enabled. To recover the web access, log in to the router and run the below commands. nvram set remote_management=1nvram set http_wanport=8080nvram set httpsd_enable=1nvram set https_enable=1nvram set remote_mgt_https

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-78971970661266178582015-02-08T01:34:00.001+05:302015-02-08T01:34:08.244+05:30

I have a dns-o-matic account and runnig fine. I had to add a new service and there is this issue " waiting for the first update"  To force update just visit the below address https://updates.dnsomatic.com/nic/update?hostname=all.dnsomatic.com you will be prompted by username and password. Enter the credentials and check the history for update. By default this should be done

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-87600762063938675522014-07-01T15:24:00.001+05:302014-07-01T15:24:33.502+05:30

source :  http://myquickfix.co.uk/2013/09/edit-crontab-with-nano-on-centos-crontab-e/ Edit crontab with NANO on centos (crontab -e) Posted September 25th, 2013 by Ben & filed under CentOS. Problem: I don’t know where my root users crontab file is, and this doesn’t usually matter because using the command ‘crontab -e’ opens it for editing anyway… but it opens in VI and I am too stupid /

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-21009102021979579302014-01-06T21:12:00.000+05:302014-01-06T21:12:12.798+05:30

Mount HFS+ apples file system in ubuntu sudo apt-get install hfsplus hfsutils hfsprogs Mount as usual. Note: HFS file system by default will be read only to enable write mode journal has to be disabled first before removing the drive.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-12947765851475908742013-11-10T02:03:00.000+05:302013-11-10T02:03:12.789+05:30

There are many websites and web scripts available to know your external (WAN/INTERNET/PUBLIC) IP address. To find out the wan IP address from command line below are two simple methods The below two methods rely on external services to detect the IP address. Any one of the listed service can be used http://myip.dnsomatic.com http://checkip.dyndns.org:8245 http://whatismyip.com http://

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-33802826663705155282013-07-26T07:46:00.002+05:302013-07-30T17:39:22.565+05:30

Post status : incomplete How to hide post date, time stamp and author from blogger home page only. This can be done using conditional tags to <span class='post-author vcard'> <span class='post-timestamp'> <span><data:post.dateHeader/></span> Conditional tag syntax<b:if cond='PUT_CONDITION_HERE'> </b:if>It is made up of a <b:if> tag, with a  

Unknownnoreply@blogger.com2tag:blogger.com,1999:blog-7305662335450575310.post-75720233396514694512013-07-03T22:18:00.000+05:302013-07-03T22:23:11.259+05:30

When you ssh to a server where the host key (RSA) has changed then you will get an error message as shown in the image: The error in the above example : Offending RSA key in /home/username/.ssh/known_hosts:8 Looking in to the error message, we can find the offending RSA key and its position in the known_hosts file. In the above example image the offending key is at  line 8.

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-86264163951052761402013-07-03T02:38:00.000+05:302013-07-03T21:18:19.230+05:30

Q.) How to shut down / restart  a remote linux server from ssh ? A.)  ssh -t user@hostname 'sudo shutdown -P now' In the above example -t  : forces the allocation of a tty for the command. -P : stands for power off. -r  : to reboot. -h : to halt.  Also all the shutdown arguments can be passed along. To know more about shutdown options run command. shutdown -

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-1299166974842909052012-12-19T15:14:00.000+05:302012-12-19T17:04:45.086+05:30

UVNC release 1.1.8 november 2012. We prefer to install uvnc as a service, disable tray icon and store the settings in registry rather than ultravnc.ini file.  The admin properties is accessed by right click on the uvnc tray icon. All the settings in the admin properties window can be edited in the registry. But for new sys-admins or support engineers who are not familiar with the

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-5391183086616650112012-11-19T11:01:00.000+05:302012-11-19T11:01:18.239+05:30

EasyPHP is a COMPLETE WAMP package and READY-TO-USE ENVIRONMENT for PHP DEVELOPERS including the server-side scripting language PHP, the web server Apache, the SQL server MySQL, as well as development tools such as the database manager PhpMyAdmin, the debugger Xdebug and many others. Nothing to configure. It's already done! You just need to download, intall ... and code. The administration

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-7429670620564376102012-05-03T03:58:00.000+05:302012-05-05T01:51:00.265+05:30

Overview If all that you want is just a openvpn server without the hassle of compiling, I recommend a debian / ubuntu system with a minimum of 64mb RAM. The below instructions would let you connect to your own openvpn (openvz VPS) server in less than 10 minutes. Prerequisite Before we install openvpn, check if tun/tap is enable for your vps: cat /dev/net/tun&

Unknownnoreply@blogger.com3tag:blogger.com,1999:blog-7305662335450575310.post-61510619700823431652012-05-02T02:15:00.003+05:302012-05-02T02:16:00.864+05:30

Overview: Using ramfs or tmpfs you can allocate part of the physical memory to be used as a partition. You can mount this partition and start writing and reading files like a hard disk partition. Since you’ll be reading and writing to the RAM, it will be faster. When a vital process becomes drastically slow because of disk writes, you can choose either ramfs or tmpfs file systems for

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-28324905595926886592012-05-02T01:40:00.003+05:302012-05-02T01:42:51.906+05:30

NAME ramfs  - memory file system SYNOPSIS ramfs [ -Dipsu ] [ -m mountpoint ] [ -S srvname ] DESCRIPTION Ramfs starts a process that mounts itself on mountpoint (default /tmp).  The ramfs process implements a tree rooted at dir, keeping all files in memory.  Ini- the file tree is empty. The -D option enables a trace of general debugging The -i flag tells ramfs to use file

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-30933876904087029942012-04-17T14:21:00.000+05:302012-05-04T21:37:56.857+05:30

User-defined tasks can be done by executing a script at startup and shutdown for Linux. To execute script at startup of Ubuntu, the rc.local can be modified to include additional commands. To execute script when rebooting Ubuntu, the script has to be copied to the relevant directory. Once the permissions of the script have been changed to executable, it will run when rebooting the Linux

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-27836105832595767802012-04-12T00:47:00.001+05:302012-12-19T17:08:09.755+05:30

In my ssh-log /var/log/auth.log : I have the following error message Unable to open env file: /etc/default/locale: No such file or directory Edited on 19/December/2012 1. Create and edit file locale at  /etc/default sudo nano /etc/default/locale 2.. Add this to the file (in this case we are adding US english) LANG = en_US.utf8  3. save and quit the editor 4. regenerate the

Unknownnoreply@blogger.com0tag:blogger.com,1999:blog-7305662335450575310.post-61790033289432267612012-04-07T04:11:00.000+05:302012-04-07T04:22:18.086+05:30

You can assign shortcuts for your most frequently used terminal commands by appending alias as many times as you did like to your bash configuration file (~/.bashrc). The syntax for alias is as follows. alias yourCommand="YourTerminalCommand" example: alias la="ls -la" alias gs1="ssh gs1.yourdomain.com" Aliases shorten the amount of keystrokes necessary to throw commands. I put

Unknownnoreply@blogger.com0