CODEWITHSUNDEEP
linuxbashparsingsedgrep
user1013149
user1013149

Reputation: 187

cutting part of the string

can some one explain me how to cut some string with using linux features like sed. For example I have sting

THIS-some-string-zzz-55.xml

how to cut ".xml" ?

result should be like:

THIS-some-string-zzz-55

Thanks!

Upvotes: 2

Views: 2567

Answers (4)

potong
potong

Reputation: 58351

Does Bash count as a Linux feature?

If so, this might work for you:

# string="THIS-some-string-zzz-55.xml"
# echo ${string%.xml}
THIS-some-string-zzz-55

or in this case:

# echo ${string%.*}
THIS-some-string-zzz-55

See here for explanation.

Upvotes: 0

ДМИТРИЙ МАЛИКОВ
ДМИТРИЙ МАЛИКОВ

Reputation: 21972

Grep time

$> echo THIS-some-string-zzz-55.xml | grep -o -P "(.*)(?=\.xml)"
THIS-some-string-zzz-55

Grep have a magic -P flag

   -P, --perl-regexp
          Interpret PATTERN as a Perl regular expression.   This  is  highly
          experimental and grep -P may warn of unimplemented features.

Btw, here is a useful table, where you can find positive lookahead (?=*), that I'm using here.

Upvotes: 1

kbyrd
kbyrd

Reputation: 3351

A few ways:

 basename thisfile.xml .xml

basename is it's own executable, so you can call it from a shell script or exec it from C or a scripting language.


If your shell is bash:

FILE=filename.xml
echo “filename: ${file%.*}”
echo “extension: ${file##*.}”


..and finally with sed

echo "filename.xml" | sed 's/\.xml$//'

That '$' in the regular expressin in sed will make the .xml match only at the end of the string.

Upvotes: 5

Friek
Friek

Reputation: 1541

This should work:

echo "THIS-some-string-zzz-55.xml" | sed 's/\.xml$//'

Upvotes: 0

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