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Shell script with regular expressio
Name: terry Date: December 25, 2002 at 22:46:27 Pacific OS: unix CPU/Ram: -
Comment:
Hi all, I have a problem about developing shell script to extract words with regular expression. For example, I have one text file that contain sth below....
This is a pen.I have a car.My name is John I have no pencil but I can find for you. aaaaaa bbb pkkkkkkkdcils lss
I want my word in this text file that begin with "p" and end with "cil" (p*cil) in this text file you can find pencil in line 2 and pkkkkkkkdcil in line 3
that i can do with grep.... but there is a problem that I want only word i want pencil and pkkkkkkkdcil only.
Name: James Boothe Date: December 26, 2002 at 06:55:06 Pacific
Reply:
Since grep outputs entire lines that contain the target expression, and you want individual words, we can first convert the file to one word per line:
fmt -1 myfile | grep ^p.*encil$
The above will print words that begin with p and end with cil. The last line of your test file contains the word pkkkkkkkdcils which would not qualify since it ends with cils and not cil.
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