[SOLVED] Removing non-alphanumeric characters with sed

Issue

I am trying to validate some inputs to remove a set of characters. Only alphanumeric characters plus, period, underscore, hyphen are allowed. I've tested the regex expression [^\w.-] here http://gskinner.com/RegExr/ and it matches what I want removed so I not sure why sed is returning the opposite. What am I missing?

My end goal is to input "Â10.41.89.50 " and get "10.41.89.50".

I've tried:

echo "Â10.41.89.50 " | sed s/[^\w.-]//g returns Â...

echo "Â10.41.89.50 " | sed s/[\w.-]//g and echo "Â10.41.89.50 " | sed s/[\w^.-]//g returns Â10418950

I attempted the answer found here Skip/remove non-ascii character with sed but nothing was removed.

Solution

tr's -c (complement) flag may be an option

echo "Â10.41.89.50-._ " | tr -cd '[:alnum:]._-'

Answered By - iruvar

Answer Checked By - Marilyn (WPSolving Volunteer)