Working with Text

You will be able to

• Read files of any size without opening an editor, and follow a log as it grows.
• Search with grep and basic or extended regular expressions, including context, counts and inverted matches.
• Reshape text with cut, sort, uniq, tr, sed and awk.
• Create and edit configuration files confidently in vim, and in nano when you prefer.

Lessons

1. 01Reading and counting textLook at files of any size, follow a growing log, and measure text before you change it.catlessheadtailwcnl0/5 exercises
2. 02Searching with grep and regular expressionsFind the lines that matter in configuration files and logs, using patterns instead of exact words.grepgrep -Egrep -igrep -vgrep -cgrep -r0/5 exercises
3. 03Reshaping text: cut, sort, uniq, tr, sed and awkSelect fields, order and count lines, substitute text and compute from columns, all from the command line.cutsortuniqtrpastesed0/5 exercises
4. 04Creating and editing files with vimCreate and change configuration files in vim, the editor that is always installed, with nano as a fallback.vimvinanovimtutor:wq:set number0/5 exercises