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extract first argument in parenthesis

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# 1  
Old 02-06-2012
extract first argument in parenthesis
I have a file that, among other things, contains a tuple with words and the word count. I want to make a list of the words only.

Ex: My file words.txt looks like:
Code:
0.1 sw-wn 9 - n: 97/903 p: 107/893neg: (film,771.1) | (movie,717.1) |
(like,690.1) | (just,621.1) | (it's,607.1) | (time,543.1) |
(good,523.1) | (make,463.1) | (bad,463.1) | (plot,462.1) |
(story,455.1) | (character,446.1) | (way,437.1) | (characters,434.1) |
(little,416.1) | (does,403.1) | (really,398.1) | (director,390.1) |
(doesn't,389.1) | (don't,379.1) | (people,364.1) |
pos: (film,793.1) | (movie,655.1) | (like,640.1) | (just,580.1) |
(time,557.1) | (it's,551.1) | (good,516.1) | (story,496.1) |
(character,471.1) | (does,466.1) | (way,466.1) | (make,449.1) |
(characters,438.1) | (best,436.1) | (life,418.1) | (people,405.1) |
(films,403.1) | (little,403.1) | (really,387.1) | (great,371.1) |

And I want to print out
Code:
film
movie
like
just
it's
time
good
make
...etc.

This command:
Code:
>> awk -F'|' '{print $1}' words.txt

gets everything out of the | delimiter, but I am not interested in the text that isn't in between parenthesis, nor the word count.
Last edited by Franklin52; 02-07-2012 at 03:59 AM.. Reason: Please use code tags for code and data samples, thank you
# 2  
Old 02-06-2012
Code:
tr -s '|' '\n' <yourfile | sed 's/.*(//;s/,.*//'

Code:
$ cat tst
0.1 sw-wn 9 - n: 97/903 p: 107/893neg: (film,771.1) | (movie,717.1) |
(like,690.1) | (just,621.1) | (it's,607.1) | (time,543.1) |
(good,523.1) | (make,463.1) | (bad,463.1) | (plot,462.1) |
(story,455.1) | (character,446.1) | (way,437.1) | (characters,434.1) |
(little,416.1) | (does,403.1) | (really,398.1) | (director,390.1) |
(doesn't,389.1) | (don't,379.1) | (people,364.1) |
pos: (film,793.1) | (movie,655.1) | (like,640.1) | (just,580.1) |
(time,557.1) | (it's,551.1) | (good,516.1) | (story,496.1) |
(character,471.1) | (does,466.1) | (way,466.1) | (make,449.1) |
(characters,438.1) | (best,436.1) | (life,418.1) | (people,405.1) |
(films,403.1) | (little,403.1) | (really,387.1) | (great,371.1) |

$ tr -s '|' '\n' <tst | sed 's/.*(//;s/,.*//'
film
movie
like
just
it's
time
good
make
bad
plot
story
character
way
characters
little
does
really
director
doesn't
don't
people
film
movie
like
just
time
it's
good
story
character
does
way
make
characters
best
life
people
films
little
really
great
$

# 3  
Old 02-06-2012
Perl.
Code:
perl -lne 'print $1 while (/\((.+?),[0-9.]+\)/g)' inputfile

# 4  
Old 02-06-2012
awk.
Code:
awk -F\( '{print $2}' RS=, file

This User Gave Thanks to Scrutinizer For This Post:
ctsgnb
# 5  
Old 02-07-2012
Code:
awk '{FS="\(|,";for(i=2;i<=NF;i+=2) print $i}' file

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