Note: The archives category content is an automatically generated focus channel and does not neccessarily reflect the opinions of this blog. No responsibility is taken for the external links presented here, follow at your own discretion.
The archives content is never scraped from sites - but an abstract obtained from search engines.
| Problem |
Solution |
Example |
Reference |
Recommended |
I “discovered” this undocument (well in all the doco I’ve ever read), pretty much by accident. Basically find produces a list of files (type f), in the current directory and supplies them individually to the grep command. Ordinarily if grep is supplied a single file, it just returns the pattern. You can suffix grep with -n to also return the line number and -l to return file names without the pattern. But you cannot (AFAIK) force grep to return the filename and the pattern, from a list of files supplied by find. Of course you could use xargs, to produce a similar mechanism - but that is yet another process to fire up.  Also you could call a script, instead of grep - which uses something like sed to substitute the beginning of the line with filename - sed “s/^/$1: /” for example. See the example.
|
|
| Problem |
Solution |
Example |
Reference |
Recommended |
Anyway, I'm quite happy just using this little secret. Having used it many times: find . -type f -exec grep -i "pattern" {} /dev/null \;
|
Leave a Reply
