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Perl command help needed

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Top Forums Shell Programming and Scripting Perl command help needed
# 1  
Old 08-17-2010
Error Perl command help needed
Code:
#!/bin/bash
perl -nle'
  /(?:date|time|ref)/ and print join " ", /(?:date|time|ref)[\w-]+/g      
    or print     
    ' inputfile

Problem I have is that I want to delete words that are on the line of the 3 words above (date, time, and reference). However, I do not want to delete the words which contain these words, just the ones that are on the line with it!

Code:
date-01/01/01 hello
time-2110 hello
ref/0001 hello
this should remain
this should remain

should give
Code:
date-01/01/01 
time-2110 
ref/0001 
this should remain
this should remain

but gives
Code:
date-01/01/01 
time-2110 
 
this should remain
this should remain

as it deletes the word if it contains '/'. Any help! Thanks!
# 2  
Old 08-17-2010
Try this,

Code:
perl -nle 's/(date|time|ref)(.+?)\s(.*)/$1$2/g; print;' infile

# 3  
Old 08-17-2010
Quote:
Originally Posted by pravin27
Try this,

Code:
perl -nle 's/(date|time|ref)(.+?)\s(.*)/$1$2/g; print;' infile


my apologies as I probably didn't explain this problem the best that I should have. The input file may have many other words on the line, both after and before before the keyword, so the $1$2 would not be too useful in this problem!

Code:
some stuff date-01/01/01 hello
stuff time-2110 hello how are you today
ref/0001 hello happy birthday
this should remain
this should remain

# 4  
Old 08-17-2010
Please post expected output according to input file which you posted in last post.
# 5  
Old 08-17-2010
Quote:
Originally Posted by pravin27
Please post expected output according to input file which you posted in last post.
Same output as in my first post

Code:
date-01/01/01 
time-2110 
ref/0001 
this should remain
this should remain

# 6  
Old 08-17-2010
Something like this,

Code:
perl -nle 'if (/(date|time|ref)(.+?)\s|(date|time|ref)(.+?)$/) { print $&; } else { print $_; }' infile

# 7  
Old 08-17-2010
Try below:-


Code:
perl -lpe 's/.*?\s*(?=date|time|ref)(.*?)\s+.*/$1/xg;'  infile.txt

Code:
i/p
some stuff date-01/01/01 hello
stuff time-2110 hello how are you today
ref/0001 hello happy birthday
this should remain
this should remain

Code:
o/p

date-01/01/01
time-2110
ref/0001
this should remain
this should remain
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