UtahSysAdmin.com

As most system administrators, I use the vi text editor a ton in my job. So I am familiar with all the common commands you can run. Today I was wondering if it was possible to change lower case to upper case letters and the opposite, from upper case to lower case letters.

Here’s how you do it:

change all lower case to upper case (CAPITAL LETTERS):

:%s/^.*$/\U&/g

change all upper case to lower case (small letters):

:%s/^.*$/\L&/g

Of course, the % is the entire document, the s///g is search and replace the entire line, ^.*$ matches everything, and the important part \L& converts to lower case and \U& converts to upper case.

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This entry was posted on Thursday, March 6th, 2008 @ 11:51 am on the category Technical.You can follow any responses to this entry through the RSS 2.0 You can leave a response, or trackback from your own site.