And, of course, your data set size would never be nearly as large as Google's. file1: test1.log file2: test2.log file3 test.zip After running the script file1: stringtest1.log file2: stringtest2.log file3. So searching is much faster, but at the expense of paying engineers to maintain it and being willing to wait until the updates occur in the database. Hii, Could someone help me to append string to the starting of all the filenames inside a directory but it should exclude. It requires more expertise to set up, and there's a lag between the time the document is updated and the time the search indexes are updated. there's a downside to that approach, too. Use the grep command to search the specified file for the pattern specified by the Pattern parameter and. It instead uses complex algorithms to get the key details from each page, put them in a searchable database, updates the indexes periodically, and uses the databases for searching. Finding text strings within files (grep command).
Grep all files in directory for string download#
For example, Google does not download everyone's web pages and then use grep on them, this would be very slow.
When organizations want to search a large amount of data, they don't typically use a tool like grep, but instead put the data into an indexed database designed for searching. 5 Answers Sorted by: 33 GNU grep Should be a little faster because the second grep may operate on a list of files. Having said that, I would expect that a search of tens of thousands of files would indeed take a lot of time. grep -nr searchstring searchdir will do a RECURSIVE (meaning the directory and all its sub-directories) search for the searchstring.
You could try using different grep tools (such as the one from Linux) to see if it works faster than the one IBM provides with QShell, maybe that'd help?
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