Category Archives: Operating System

Bash Scripting templates

Posted on October 6, 2014 by ronaldpringadi

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859# ========================== # Bash tips # ========================== # Run bash by $ /bin/bash scriptname.sh $ /bin/bash scriptname.sh +x  # debug mode # Or put the next line on the 1st line of your file. #!/bin/bash -x ## Double round braket … Continue reading →

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Enabling SSH (https) for Apache 2 in Ubuntu/Mint/Possibly other Debian distro

Posted on September 4, 2014 by ronaldpringadi

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051# Intall apache $ sudo apt-get install apache2   # Enable SSL module $ sudo a2enmod ssl # Restart Apache $ sudo service apache2 restart # Create a directory to store the SSLCertificateFile and SSLCertificateKeyFile $ mkdir  /etc/apache2/ssl # Generate … Continue reading →

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How to Share Directories Between Linux and Windows Systems

Posted on May 8, 2014 by ronaldpringadi

Sharing files and directories between Linux and Windows systems can be challenging, but with the right tools and configuration, it’s straightforward. This guide covers both directions: making a Linux directory accessible from Windows, and accessing Windows shared directories from Linux. … Continue reading →

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Choosing the default network card (NIC) that should access the Internet

Posted on May 8, 2014 by ronaldpringadi

When a machine has more than one Network Interface Card (NIC) — say a Wi-Fi adapter and an Ethernet port, or a physical NIC alongside a Virtual Private Network (VPN) adapter — Windows has to decide which one to send … Continue reading →

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Getting the current filename using bash

Posted on May 3, 2014 by ronaldpringadi

123456789101112131415$ cat ./testfilename.sh #!/bin/bash fullfile=`basename $0` filename=$(basename "$fullfile") echo "filename:"$filename extension="${filename##*.}" echo "extension:"$extension justfilename="${filename%.*}" echo "justfilename:"$justfilename $ ./testfilename.sh filename:testfilename.sh extension:sh justfilename:testfilename

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Customize your Vim editor using .vimrc

Posted on April 24, 2014 by ronaldpringadi

Quick notes: – imap is for when you are in insert mode – map is when your are in command mode Thus when you are in the insert mode, sometime you need to exit to the command mode first using … Continue reading →

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Search and replace withing a file

Posted on April 14, 2014 by ronaldpringadi

1234567sed -i -e"s/SEARCH_TEXT/REPPLACE_TEXT/g" FILENAME.txt # another example using bakup sed -i.bak -e"s/SEARCH_TEXT/REPPLACE_TEXT/g" FILENAME.txt # another example using variable sed -i -e"s/\/pathname/\/pathname-$date/g" "filename-"$date".xml"

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Bash Scripting Basics (Variable Assignment, If, Loop)

Posted on March 20, 2014 by ronaldpringadi

12345678910111213141516171819202122232425262728293031#!/bin/bash ################################################## # Benchmark the processing time when wkhtmltopdf # converts an html file to a pdf file ################################################## if [[ $1 = "" || $2 = "" || $3 = "" ]]; then         echo "Usage: … Continue reading →

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Compress and Extract Files in Linux

Posted on March 10, 2014 by ronaldpringadi

Extract: .tar.bz2 To extract a tar (Tape ARchiver) file, type the following in the shell prompt: 1tar xvjf yourFileName.tar.bz2 Which will untar it to the current directory. Depending on the file structure that being compressed, it might create sub-directories. Parameters: … Continue reading →

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Remote copy using scp

Posted on January 15, 2014 by ronaldpringadi

Do you ever need to copy one file from one server to another? If you have ssh access to the remote server then you can do an scp command like so: 1$ scp remoteUsername@remoteServername:remoteFile localFile

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