Grep to remove non-ASCII characters

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# 1  
Old 11-09-2013
Grep to remove non-ASCII characters

I have been having an encoding problem that I need to solve.
I have an 4-column tab-separated file: I need to remove all of the lines that contain the string 'vis--vis'

achiever-n    vis--vis+ns-j+vp    oppose-v    1
achiever-n    vis--vis+ns-the+vg    assess-v    1
administrator-n    vis--vis+n-the+n    position-n    1
adobe-n    vis--vis+n-a-j+n-a-j    ad-n    1

In this way, if my file contains 4 lines that contain 'vis--vis' they will all be filterd.
How can I do this with a one liner grep?

---------- Post updated at 01:18 PM ---------- Previous update was at 01:09 PM ----------

or I need something that removes all non-ascii characters..

or that does the opposite of this grep

grep --color='auto' -P -n '[^\x00-\x7F]' file

I have tried
grep --color='auto' -P -n '![^\x00-\x7F]' file

with no success

Last edited by owwow14; 11-09-2013 at 02:23 PM..
# 2  
Old 11-09-2013

grep --color='auto' -P -v -n '[^\x00-\x7F]' file

# 3  
Old 11-09-2013
I have tried that option too -- and it doesn't seem to remove anything... just reprints out the entire input file...
# 4  
Old 11-09-2013
egrep -v "[ -~]" file

# 5  
Old 11-11-2013
Thank you for the responses - they both just seem to work just fine.

Last edited by owwow14; 11-11-2013 at 05:07 AM..
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