escaped characters in sed

[tradntele]

Trying to use one sed command to delete the following 3 characters "[]

Tried...

sed "s/[\"\[\]]//g" filename

It did not work, but when I just include 2 of these escaped characters in the set, it works fine. Any ideas?

 

[gillou]

Try sed 's/"\[]//g' filename.

 

[CaKiwi]

Escaping characters inside a [] pair does not work in sed. To search for a ] you must make it the first character. The other 2 special characters are ^ which loses its special meaning it it is not first and - which loses its special meaning if it is first or last.

sed 's/[]["]//g' fn

CaKiwi

 

[crakkerjax]

Have you tried doing it in a script instead? Something that you can set the variables in? ie:

blah="[]"
newblah=whatyouwantittobe
cat filename sed -e s/$blah/$whatyouwantittobe/g > newfilename

You definitely want to try this on a new or copied file as if the arguments don't match, you'll get a zero-length file.

Cheers,

Jacques