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Change user in Ubuntu OS

By Prasad Naik
June 25, 2026

Normally Ubuntu allows you to install OS as non root username So you need to login to server as non root user and run command mentioned below to login as root user sudo -i Once you login as root user change below mentioned parameter in /etc/ssh/sshd_config and uncomment PermitRootLogin paramter and change to to yes […]

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Remove spaces between words

By Prasad Naik
August 17, 2013

You may have comes across situation where you have to manually edit a single file using excel or words to remove the space between words which is taking consuming and Boring 🙂 The below command can do the trick in one command to save your day   cat 116.txt | sed -e ‘s/[\t ]//g;/^$/d’  > […]

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