Author: Kavit

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use XPath in browsers devtools

You can execute the XPath selectors in the browser dev tools using the $x() For example, following selector will give you all the anchor tags on the webpage. $x(‘//a’); Further Reading : Command Line...

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Bash scripting missing ‘]’

If you have the simple script like the following : #!/bin/bash if [ $foo = ‘bar’]; then echo ‘Foo is equal to bar’ fi And when you run the script, if you get the...

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Error: listen EADDRINUSE

EADDRINUSE – stands for error: address already in use. It means you have a server listening on the same port. To solve this problem you have to kill the process running on that port....

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How to create scripts in terminal

Follow three simple steps to automate your terminal. Create a script Set the permissions Execute the script Create a script test.sh $vi test.sh ls -la echo ‘Hello Bash!’ Set the permissions $sudo chmod 777...

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How to create a permanent “alias”?

Follow three simple steps to create alias for your command line. cd ls -la vi .bashrc Append your favorite alias at the bottom of the file. Below are some of my favorite aliases. #...

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[: !=: unary operator expected

In bash, always use the double bracket conditional command [[ … ]] For example, #!/bin/bash sex=male if [[ $sex == ‘male’ ]];then echo “sex is male.” elif [[ $sex == ‘female’ ]];then echo “sex...

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Embed youtube video in wordpress site

The following template allows you to do the following: Embed a youtube video into WordPress site, which uses markdown in its posts. Allows you the size the video’s dimensions. Notes: Remove extra space after...