Troubleshooting

optipng: Error: Can’t back up the existing output file While running the optipng command, the error "Can't back up the existing output file" was reported. Solution to the error is given. Continue Reading
Getting a project from GitHub Quite often, we wish to get a project from GitHub. The steps for getting a project from GitHub are explained. Continue Reading
Failed to send 300 byte long packet over fallback interface Solution to the error, "Failed to send 300 byte long packet over fallback interface, while starting a service". Continue Reading
Error Dovecot: imap Error: open (/var/mail/username) failed Resolution of the error Dovecot: imap Error: open (/var/mail/username) failed observed on a Postfix mail server site. Continue Reading
Not able to access files on Android device in Nautilus from Linux desktop After connecting Android device to a computer, files were not getting accessed. How to access files on Android device from Linux is explained. Continue Reading
Error Recaptcha: Error for site owner Instead of captcha, "ERROR for site owner, Invalid domain for site key" was displayed in a form. The steps for resolving the error are given. Continue Reading
Android: AdbCommandRejectedException getting properties for device Debug connection problem between host and Android device, the ADB log error being AdbCommandRejectedException getting properties for device. Continue Reading
Error while loading shared libraries: libz.so.1 Solution to the error while loading shared libraries, libz.so.1, while building a project in Android Studio is listed. Continue Reading
Unable to establish a connection to adb Unable to establish a connection between a project under Android Studio and adb. Solution to the problem is given. Continue Reading
Invalid Gradle JDK configuration found Solution to the "Invalid Gradle JDK configuration found" problem faced while opening an Android project in Studio is given. Continue Reading
Using git Using Git Git is a popular, widely used, source code management system, originally developed by Linus Torvalds. Common Git commands are listed. Continue Reading
Importing an Android Studio project in Git How to import an Android Studio project for software configuration management under Git is explained with an example. Continue Reading
bash idioms Bash idioms bash idioms are tiny scripts, mostly one-liners, that accomplish a lot and can be used as building blocks in larger scripts. Continue Reading
Open image with Gimp Posting images on Twitter How to optimize the size of an image for sharing on Twitter so that the full image is visible in the tweet stream is explained. Continue Reading
Getting WordPress to work with Varnish 4.0 With Varnish 4.0, VCL has changed. The changed VCL for dropping cookies for a WordPress based site using Varnish cache server is provided. Continue Reading