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How to convert a string to lowercase in Bash

Posted by Alex On July 9, 2022

This note will show you how to convert a string to lowercase (small letters) on the Linux command line. To convert a string to lower case regardless of its current case, use one of the following commands. tr echo "Hi all" | tr '[:upper:]' '[:lower:]' hi all Attention! If you want to change the case of any letters other than...

How to convert a string to uppercase in Bash

Posted by Alex On July 9, 2022

This note will show you how to convert a string to upper case (capital letters, uppercase) on the Linux command line. To convert a string to capital letters regardless of its current case, use one of the following commands. tr echo "Hi all" | tr '[:lower:]' '[:upper:]' HI ALL Attention! If you want to change the case of any letters...

Error “ruby-bundler: /usr/share/man/man5/gemfile.5.gz exists in filesystem (owned by ruby)” (SOLVED)

Posted by Alex On April 12, 2021

Whenever operating system packages are updated (as well as when new packages are installed), in addition to checking dependencies, package managers also check that there is no file conflict. That is, a package containing files that are already on disk and do not belong to this package will not be updated or installed. During a regular system update (Arch Linux,...

How to run “bundle install” as root

Posted by Alex On February 20, 2021

The “bundle install” command does not allow you to run it as root. For example, the following sequence of commands will fail: gem update --system xcode-select --install gem install nokogiri bundle install The last command will show an error: Don't run Bundler as root. Bundler can ask for sudo if it is needed, and installing your bundle as root will...