To enable /etc/rc.local file run on system startup on servers runing systemd, you can run
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systemctl enable rc-local |
Now you need to create file /etc/rc.local with 755 permission.
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touch /etc/rc.local chmod 755 /etc/rc.local |
See Autostart […]
On Windows and Linux there are many free open source VNC clients available. For Mac, if you google, most VNC clients are paid. But you don’t need a VNC client on Mac. To connect to VNC server from Mac Computer, go to terminal, run following command
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open vnc://SERVER_IP_ADDRESS_HERE:PORT_HERE |
See Mac, VNC […]
proxychains allow you to route traffic using proxy servers. This is useful for routing traffic throihg applications that do not support proxy by default. For example, i use ssh through proxy chains. To install proxychains on Ubuntu, run
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apt install -y proxychains |
Now you need to edit /etc/proxychains.conf and add your proxy servers.
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sudo vi /etc/proxychains.conf |
On my computer, i […]
To list all available LetsEncrypt SSL certficates, run
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certbot certificates |
To delete a certificate, run
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certbot delete --cert-name NAME_OF_SSL_CERT |
You can find NAME_OF_SSL_CERT from command “certbot certificates”. See LetsEncrypt […]
When i login to a PrestaShop web site, i get error on a Plesk server.
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502 Bad Gateway |
On checking error login for the site in folder /var/www/vhosts/domain.com/logs/proxy_error_log, i found following error message proxy_error_log:2020/11/25 19:41:41 [error] 1809#0: *39664 upstream sent too big header while reading response header from upstream, client: 59.92.71.53, server: tulivesi.com, request: “POST /en/login?back=my-account HTTP/2.0”, […]
Here are some useful commands to check server load. iostat shows disk IO usage. %iowait shows how much time process wait for disk operation. This should be 0. If you are on VPS, check for %steal to see if host server is overloaded.
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iostat 1 10 |
Checks for processes in ‘D’ state
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for x in `seq 1 1 30`; do ps -eo state,pid,cmd | grep "^D"; echo "-"; sleep 2; done |
Top processes using CPU […]
To find size of database using SQL command, run following SQL in MySQL promt.
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SELECT table_schema AS "Database", ROUND(SUM(data_length + index_length) / 1024 / 1024, 2) AS "Size (MB)" FROM information_schema.TABLES GROUP BY table_schema; |
Example FInd disk usage by tables To find disk usage by tables in database, run
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SELECT table_name AS "Table", round(((data_length + index_length) / 1024 / 1024), 2) as "size (MB)" FROM information_schema.TABLES WHERE table_schema = "DB_NAME_HERE" ORDER BY data_length DESC; |
In above SQL, replace DB_NAME_HERE with actual name of the database. Example
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SELECT table_name AS "Table", round(((data_length + index_length) / 1024 / 1024), 2) as "size (MB)" FROM information_schema.TABLES WHERE table_schema = "xogifts_db" ORDER BY data_length DESC; |
See MySQL […]
To get list of video format supported by ffmpeg, run
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ffmpeg -formats |
Example See ffmpeg […]
To request a zone transfer using dig, use
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dig @NAME_SERVER_HERE -t AXFR DOMAIN_NAME_HERE |
Example
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[root@vps3 poweradmin]# dig @server10.hosthat.com -t AXFR bizhat.com ; <<>> DiG 9.5.1-P2-RedHat-9.5.1-2.P2.fc10 <<>> @server10.hosthat.com -t AXFR bizhat.com ; (1 server found) ;; global options: printcmd bizhat.com. 86400 IN SOA dns10.hosthat.com. hostonnet.gmail.com. 2008091126 7100 7200 2419100 86400 bizhat.com. 14400 IN MX 0 server52.hosthat.com. bizhat.com. 86400 IN NS dns10.hosthat.com. bizhat.com. 86400 IN NS server70.hosthat.com. bizhat.com. 14400 IN A 67.228.96.44 *.bizhat.com. 14400 IN A 66.90.101.78 aaj.bizhat.com. 14400 IN A 67.228.37.136 adserver.bizhat.com. 14400 IN A 174.37.154.236 advt.bizhat.com. 14400 IN A 67.228.95.96 alappuzha.bizhat.com. 14400 IN CNAME cms.bizhat.com. angamaly.bizhat.com. 14400 IN CNAME cms.bizhat.com. arthunkal.bizhat.com. 14400 IN CNAME cms.bizhat.com. astrology.bizhat.com. 14400 IN A 67.228.37.136 austin.bizhat.com. 14400 IN CNAME cms.bizhat.com. autos.bizhat.com. 14400 IN CNAME cms.bizhat.com. bangalore.bizhat.com. 14400 IN CNAME cms.bizhat.com. banner.bizhat.com. 14400 IN A 67.228.37.136 bb.bizhat.com. 14400 IN A 76.76.18.19 beauty.bizhat.com. 14400 IN CNAME cms.bizhat.com. bizhat-radio.bizhat.com. 14400 IN A 72.21.41.242 blog.bizhat.com. 14400 IN A 76.76.18.23 *.blog.bizhat.com. 14400 IN A 76.76.18.23 blogs.bizhat.com. 14400 IN A 208.53.161.106 books.bizhat.com. 14400 IN CNAME cms.bizhat.com. bsc.bizhat.com. 14400 IN A 67.228.37.136 calendar.bizhat.com. 14400 IN CNAME cms.bizhat.com. chat.bizhat.com. 14400 IN A 67.228.37.136 chellanam.bizhat.com. 14400 IN CNAME cms.bizhat.com. cherthala.bizhat.com. 14400 IN CNAME cms.bizhat.com. cherthalainfo.bizhat.com. 14400 IN CNAME cms.bizhat.com. classifieds.bizhat.com. 14400 IN A 67.228.37.136 cms.bizhat.com. 14400 IN A 76.76.18.22 computer.bizhat.com. 14400 IN A 67.228.37.136 counter.bizhat.com. 14400 IN A 76.76.18.19 dating.bizhat.com. 14400 IN A 76.76.18.23 dileep.bizhat.com. 14400 IN CNAME cms.bizhat.com. dir.bizhat.com. 14400 IN A 72.36.166.222 directory.bizhat.com. 14400 IN A 67.228.96.44 divyaunni.bizhat.com. 14400 IN A 67.228.96.44 domainname.bizhat.com. 14400 IN CNAME cms.bizhat.com. domains.bizhat.com. 14400 IN A 67.228.37.136 downloads.bizhat.com. 14400 IN A 67.228.95.96 ecards.bizhat.com. 14400 IN A 67.228.37.136 education.bizhat.com. 14400 IN CNAME cms.bizhat.com. emedia.bizhat.com. 14400 IN A 67.228.37.136 ernakulam.bizhat.com. 14400 IN CNAME cms.bizhat.com. ezhupunna.bizhat.com. 14400 IN CNAME cms.bizhat.com. filmreviews.bizhat.com. 14400 IN A 76.76.18.23 finance.bizhat.com. 14400 IN CNAME cms.bizhat.com. findhost.bizhat.com. 14400 IN A 67.228.37.136 forums.bizhat.com. 14400 IN A 69.59.28.85 free.bizhat.com. 14400 IN A 208.53.161.106 freeforums.bizhat.com. 14400 IN A 208.53.161.107 freeinfo.bizhat.com. 14400 IN A 67.228.37.136 freelance.bizhat.com. 14400 IN A 67.228.37.136 friends.bizhat.com. 14400 IN A 65.98.61.140 ftp.bizhat.com. 14400 IN CNAME bizhat.com. gallery.bizhat.com. 14400 IN A 69.59.28.85 games.bizhat.com. 14400 IN A 67.228.37.136 gifts.bizhat.com. 14400 IN CNAME cms.bizhat.com. git.bizhat.com. 14400 IN A 67.228.104.123 gptcktm.bizhat.com. 14400 IN CNAME cms.bizhat.com. guestbook.bizhat.com. 14400 IN A 67.228.37.136 gujarat.bizhat.com. 14400 IN CNAME cms.bizhat.com. hamradio.bizhat.com. 14400 IN CNAME cms.bizhat.com. health.bizhat.com. 14400 IN CNAME cms.bizhat.com. home.bizhat.com. 14400 IN A 67.228.37.136 homebiz.bizhat.com. 14400 IN A 67.228.37.136 hosted.bizhat.com. 14400 IN A 67.228.37.136 hosting.bizhat.com. 14400 IN A 67.228.37.136 hotels.bizhat.com. 14400 IN CNAME cms.bizhat.com. htmltutorial.bizhat.com. 14400 IN CNAME cms.bizhat.com. idukki.bizhat.com. 14400 IN CNAME cms.bizhat.com. image.bizhat.com. 14400 IN A 74.86.201.216 imagehost.bizhat.com. 14400 IN A 67.228.104.120 images.bizhat.com. 14400 IN A 74.86.201.216 img1.bizhat.com. 14400 IN A 69.59.28.86 img2.bizhat.com. 14400 IN A 76.76.18.24 img3.bizhat.com. 14400 IN A 67.228.104.120 img4.bizhat.com. 14400 IN A 208.53.161.108 img5.bizhat.com. 14400 IN A 76.76.18.24 india.bizhat.com. 14400 IN CNAME cms.bizhat.com. interactivecd.bizhat.com. 14400 IN A 67.228.37.136 iptools.bizhat.com. 14400 IN A 67.228.96.44 ishtam.bizhat.com. 14400 IN A 67.228.37.136 jagathi.bizhat.com. 14400 IN A 67.228.96.44 jayaram.bizhat.com. 14400 IN CNAME cms.bizhat.com. jobs.bizhat.com. 14400 IN A 76.76.18.23 jokes.bizhat.com. 14400 IN A 67.228.37.136 kannur.bizhat.com. 14400 IN CNAME cms.bizhat.com. karnataka.bizhat.com. 14400 IN CNAME cms.bizhat.com. kasaragod.bizhat.com. 14400 IN CNAME cms.bizhat.com. kashmir.bizhat.com. 14400 IN CNAME cms.bizhat.com. kerala.bizhat.com. 14400 IN CNAME cms.bizhat.com. kidsempire.bizhat.com. 14400 IN CNAME cms.bizhat.com. kochi.bizhat.com. 14400 IN CNAME cms.bizhat.com. koilparampil.bizhat.com. 14400 IN CNAME cms.bizhat.com. kollam.bizhat.com. 14400 IN CNAME cms.bizhat.com. kottayam.bizhat.com. 14400 IN CNAME cms.bizhat.com. kovalam.bizhat.com. 14400 IN CNAME cms.bizhat.com. kozhikode.bizhat.com. 14400 IN CNAME cms.bizhat.com. kumarakom.bizhat.com. 14400 IN CNAME cms.bizhat.com. kunchackoboban.bizhat.com. 14400 IN A 67.228.96.44 labs.bizhat.com. 14400 IN A 69.93.202.216 lifestyle.bizhat.com. 14400 IN CNAME cms.bizhat.com. linuxcd.bizhat.com. 14400 IN CNAME cms.bizhat.com. localhost.bizhat.com. 14400 IN A 127.0.0.1 lonavala.bizhat.com. 14400 IN CNAME cms.bizhat.com. lotus.bizhat.com. 14400 IN CNAME cms.bizhat.com. mail.bizhat.com. 14400 IN A 76.76.18.23 www.mail.bizhat.com. 14400 IN A 76.76.18.23 malappuram.bizhat.com. 14400 IN CNAME cms.bizhat.com. mammooty.bizhat.com. 14400 IN CNAME cms.bizhat.com. mano.bizhat.com. 14400 IN A 67.228.95.96 www.mano.bizhat.com. 14400 IN A 67.228.95.96 mariasadanam.bizhat.com. 14400 IN CNAME cms.bizhat.com. media.bizhat.com. 14400 IN A 76.76.18.22 mohanlal.bizhat.com. 14400 IN CNAME cms.bizhat.com. movies.bizhat.com. 14400 IN A 74.86.201.216 munnar.bizhat.com. 14400 IN CNAME cms.bizhat.com. music.bizhat.com. 14400 IN A 67.228.37.136 news.bizhat.com. 14400 IN A 67.228.96.44 newsletter.bizhat.com. 14400 IN A 67.228.95.96 newstar.bizhat.com. 14400 IN A 67.228.37.136 novel.bizhat.com. 14400 IN A 67.228.37.136 palakkad.bizhat.com. 14400 IN CNAME cms.bizhat.com. pallipuram.bizhat.com. 14400 IN CNAME cms.bizhat.com. pallithode.bizhat.com. 14400 IN CNAME cms.bizhat.com. pathanamthitta.bizhat.com. 14400 IN CNAME cms.bizhat.com. pets.bizhat.com. 14400 IN CNAME cms.bizhat.com. phpbb.bizhat.com. 14400 IN CNAME cms.bizhat.com. phptutorial.bizhat.com. 14400 IN CNAME cms.bizhat.com. postfix.bizhat.com. 14400 IN CNAME cms.bizhat.com. print.bizhat.com. 14400 IN CNAME cms.bizhat.com. qmail.bizhat.com. 14400 IN CNAME cms.bizhat.com. radio.bizhat.com. 14400 IN A 67.228.96.44 ranakpur.bizhat.com. 14400 IN CNAME cms.bizhat.com. realestate.bizhat.com. 14400 IN A 67.228.37.136 recipes.bizhat.com. 14400 IN A 67.228.37.136 s1.bizhat.com. 14400 IN A 76.76.18.23 *.s1.bizhat.com. 14400 IN A 76.76.18.23 s2.bizhat.com. 14400 IN A 76.76.18.21 *.s2.bizhat.com. 14400 IN A 76.76.18.21 s3.bizhat.com. 14400 IN A 76.76.18.21 *.s3.bizhat.com. 14400 IN A 76.76.18.21 s4.bizhat.com. 14400 IN A 76.76.18.21 *.s4.bizhat.com. 14400 IN A 76.76.18.21 salu.bizhat.com. 14400 IN CNAME cms.bizhat.com. sanjeevani.bizhat.com. 14400 IN CNAME cms.bizhat.com. screensaver.bizhat.com. 14400 IN A 67.228.37.136 scripts.bizhat.com. 14400 IN A 67.228.37.136 search.bizhat.com. 14400 IN A 67.228.37.136 sites.bizhat.com. 14400 IN CNAME cms.bizhat.com. smartboss.bizhat.com. 14400 IN A 174.37.154.236 sms.bizhat.com. 14400 IN A 76.76.18.23 star.bizhat.com. 14400 IN CNAME cms.bizhat.com. stefin.bizhat.com. 14400 IN CNAME cms.bizhat.com. stmarys.bizhat.com. 14400 IN CNAME cms.bizhat.com. www.stmarys.bizhat.com. 14400 IN CNAME cms.bizhat.com. submit.bizhat.com. 14400 IN A 67.228.37.136 sureshgopi.bizhat.com. 14400 IN CNAME cms.bizhat.com. test.bizhat.com. 14400 IN A 67.228.37.136 thanki.bizhat.com. 14400 IN CNAME cms.bizhat.com. thiruvananthapuram.bizhat.com. 14400 IN CNAME cms.bizhat.com. thrissur.bizhat.com. 14400 IN CNAME cms.bizhat.com. top100.bizhat.com. 14400 IN A 76.76.18.23 tourism.bizhat.com. 14400 IN CNAME cms.bizhat.com. tutorials.bizhat.com. 14400 IN CNAME cms.bizhat.com. uploads.bizhat.com. 14400 IN A 67.228.226.99 uploads.bizhat.com. 14400 IN A 76.76.18.19 ftp.uploads.bizhat.com. 14400 IN A 208.53.170.247 s1.uploads.bizhat.com. 14400 IN A 127.0.0.1 s2.uploads.bizhat.com. 14400 IN A 208.53.168.39 s3.uploads.bizhat.com. 14400 IN A 208.53.168.13 s4.uploads.bizhat.com. 14400 IN A 208.53.158.66 s5.uploads.bizhat.com. 14400 IN A 67.159.61.214 s6.uploads.bizhat.com. 14400 IN A 67.159.60.15 s7.uploads.bizhat.com. 14400 IN A 66.90.104.210 s8.uploads.bizhat.com. 14400 IN A 208.53.136.114 s9.uploads.bizhat.com. 14400 IN A 66.90.104.184 www.uploads.bizhat.com. 14400 IN A 67.228.226.99 uploads-nu-s54.bizhat.com. 14400 IN A 76.76.18.23 varkala.bizhat.com. 14400 IN CNAME cms.bizhat.com. video.bizhat.com. 14400 IN A 67.228.116.84 s1.video.bizhat.com. 14400 IN A 69.59.28.86 s2.video.bizhat.com. 14400 IN CNAME 1wp-f2a00a0000000000.id.velocix.com. static1.video.bizhat.com. 14400 IN A 76.76.18.24 visitation.bizhat.com. 14400 IN CNAME cms.bizhat.com. wayanad.bizhat.com. 14400 IN CNAME cms.bizhat.com. webftp.bizhat.com. 14400 IN A 208.53.161.106 webmaster.bizhat.com. 14400 IN A 67.228.37.136 world.bizhat.com. 14400 IN A 67.228.37.136 worldseven.bizhat.com. 14400 IN A 127.0.0.2 www.bizhat.com. 14400 IN CNAME bizhat.com. yearofdevil.bizhat.com. 14400 IN A 67.228.37.136 yellowpages.bizhat.com. 14400 IN A 67.228.95.96 yourname.bizhat.com. 14400 IN CNAME cms.bizhat.com. youtubescript.bizhat.com. 14400 IN A 67.228.192.156 bizhat.com. 86400 IN SOA dns10.hosthat.com. hostonnet.gmail.com. 2008091126 7100 7200 2419100 86400 ;; Query time: 113 msec ;; SERVER: 67.228.226.101#53(67.228.226.101) ;; WHEN: Mon Jul 6 04:22:03 2009 ;; XFR size: 199 records (messages 1, bytes 4605) [root@vps3 poweradmin]# |
See dig […]
These are some software/settings i have on my computer running Ubuntu 20.04 Steam store games on different Disk GNOME Shell Extension Install TeamSpeak Client on Ubuntu Separate Google Hangout icon in Ubuntu 18.04/20.04 […]