Category: OS

recursively download and crawl web pages using wget wget -erobots=off -r http://www.guguncube.com in case downloading hangs due to missing/incorrect robots.txt, just use “-erobots=off”. This skips downloading robots.txt altogether. Multiple URLs wget -erobots=off -i url-list.txt References 1. http://skeena.net/kb/wget%20ignore%20robots.txt

sudo update-alternatives –config editor #There are 5 choices for the alternative editor (providing /usr/bin/editor). # # Selection Path Priority Status #———————————————————— #* 0 /bin/nano 40 auto mode # 1 /bin/ed -100 manual mode # 2 /bin/nano 40 manual mode # 3 /usr/bin/mcedit 25 manual mode # 4 /usr/bin/vim.basic 30 manual mode # 5 /usr/bin/vim.tiny 10…

Installation 1. Prepare sudo apt-get install build-essential linux-headers-`uname -r` -y sudo apt-get install make -y sudo apt-get install gcc -y 2. Download vmware player a@a:~$ cd Downloads a@a:~/Downloads$ ls VMware-Player-4.0.2-591240.i386.bundle a@a:~/Downloads$ sudo sh VMware-Player-4.0.2-591240.i386.bundle ???? sudo sh vmware-installer -u vmware-player The installed application can be found under: Applications -> System Tools -> VMWare Player Deinstallation…

# install numfmt through coreutils sudo apt-get install -y coreutils alias ducks=’sudo du -cbs * | sort -rn| head -11|numfmt –field 1 –to=iec|column -t’ Add to .bash_aliases > cat ~/.bash_aliases alias ducks=’sudo du -cbs * | sort -rn| head -11|numfmt –field 1 –to=iec|column -t’ .. > ducks 10TB this 5GB is 2MB hello 10KB world…

# remove and purge old skype versions sudo apt-get remove -y skype skype-bin:i386 skype:i386 sudo apt-get purge -y skype skype-bin:i386 skype:i386 # remove and purge old sni-qt versions sudo apt-get remove -y sni-qt:i386 sudo apt-get purge -y sni-qt:i386 # install new sni-qt version sudo apt-get install -y sni-qt:i386 # download and install latest skype version…

# use a custom directory for download and installation mkdir -p ~/build/selenium cd ~/build/selenium # Install Google Chrome wget -q -O- https://dl-ssl.google.com/linux/linux_signing_key.pub | sudo apt-key add – sudo sh -c ‘echo “deb http://dl.google.com/linux/chrome/deb/ stable main” > /etc/apt/sources.list.d/google.list’ sudo apt-get update sudo apt-get install -y google-chrome-stable # Download Selenium wget http://selenium-release.storage.googleapis.com/2.41/selenium-server-standalone-2.41.0.jar # Download Chrome Driver Selenium…

One of the many ways to resolve package issues in ubuntu 🙂 sudo apt-get -f install sudo apt-get update # to update your package list. sudo apt-get autoclean # to clean up any partial packages. sudo apt-get clean # to clean up the apt cache. sudo apt-get autoremove # will clean up any unneeded dependencies.…

check host ftp.redhat.com with address ftp.redhat.com if failed icmp type echo with timeout 15 seconds then alert if failed port 21 protocol ftp then exec “/usr/X11R6/bin/xmessage -display :0 ftp connection failed” alert foo@bar.com References 1. https://mmonit.com/monit/documentation/monit.html

1. Simple URL Check check host elastic_health_check with address 0.0.0.0 if failed url http://0.0.0.0:9200/_cluster/health for 2 cycles then alert 2. URL with Basic Authentification # http://stackoverflow.com/questions/1115816/monit-and-apache-site-behind-http-basic-auth # It seems to be possible to include the credentials in the URL, have you tried this?: # (from http://mmonit.com/monit/documentation/monit.html#connection_testing ) # If a username and password is included…