Stupid Unix Tricks

Contents:

• Convert a string to lower case:
• Find the last day of the month
• Encrypt all files in one dir and save to another dir with ansible vault
• Find the current dpi in X
• Go to a specific line number in less
• Go to a specific byte (offset?) in less
• Show a specific line number in less
• Extract a specific line using sed
• Better ^w behavior
• perl one liner to get rid of windows new lines