Use ack instead of grep to parse text files
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Use ack instead of grep to parse text files
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Re: Use ack instead of grep to parse text files
#2 ack '(?=silver).*needle' haystack
grep needle haystack|grep silver
Also, I'm not sure why the author uses
ack '(?=silver).*needle' haystack
ack 'silver.*needle' haystackRe: Use ack instead of grep to parse text files
#3Wasn't mentioned in the article but you can install ack (on OSX) through the homebrew package manager with: `brew install ack`. Check out the docs at http://betterthangrep.com/
Re: Use ack instead of grep to parse text files
#4This article is a wonderful demonstration why simple methods piped together is better and easier to use than a giant monolithic application like awk.
Re: Use ack instead of grep to parse text files
#5ack '(?=silver).*needle' haystack is really not the same as: grep needle haystack|grep silver Because with the double grep method, a match will be made whether "silver" is before or after "needle"; while with the single ack command shown above, a match will only be made when "silver" comes before "needle". Also, I'm not sure why the author uses ack '(?=silver).*needle' haystack instead of simply: ack 'silver.*needle'…
Maybe it's because you can write the latter also with plain grep:
grep 'silver.*needle' haystackRe: Use ack instead of grep to parse text files
#6This article is a wonderful demonstration why simple methods piped together is better and easier to use than a giant monolithic application like awk.
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Re: Use ack instead of grep to parse text files
#7if you want the silver needle, the unsophisticated, greppy way of doing this would be: $ grep needle haystack|grep silver
Why not simply $ grep "silver needle" haystack?
Re: Use ack instead of grep to parse text files
#8Why is:
ack -C5 'scope(?!.*lambda)' app/models
grep -C5 scope app/models | grep -v lambda
?Re: Use ack instead of grep to parse text files
#9ack '(?=silver).*needle' haystack is really not the same as: grep needle haystack|grep silver Because with the double grep method, a match will be made whether "silver" is before or after "needle"; while with the single ack command shown above, a match will only be made when "silver" comes before "needle". Also, I'm not sure why the author uses ack '(?=silver).*needle' haystack instead of simply: ack 'silver.*needle'…
Also, traditional grep can easily find 'silver needle': `grep silver\ needle haystack`.
Re: Use ack instead of grep to parse text files
#10This article is a wonderful demonstration why simple methods piped together is better and easier to use than a giant monolithic application like awk.
Are you confusing awk with ack?