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grep is a command-line utility for searching plaintext datasets for lines that match a regular expression.Its name comes from the ed command g/re/p (global regular expression search and print), which has the same effect.
He later added this capability to the Unix editor ed, which eventually led to the popular search tool grep's use of regular expressions ("grep" is a word derived from the command for regular expression searching in the ed editor: g/re/p meaning "Global search for Regular Expression and Print matching lines"). [15]
Pete Rose is the all-time MLB hits leader with 4,256 hits. Listed are all Major League Baseball players who have reached the 2,000 hit milestone during their career in MLB. Pete Rose holds the Major League record for most career hits, with 4,256. Rose and Ty Cobb, second most, are the only players with 4,000 or more career hits.
/S Searches for matching files in the current directory and all subdirectories. /I Specifies that the search is not to be case-sensitive. /X Prints lines that match exactly. /V Prints only lines that do not contain a match. /N Prints the line number before each line that matches. /M Prints only the filename if a file contains a match.
Rank Player (2025 HRs) HR 76 Mike Trout (0): 378 Matt Williams: 378 78 Norm Cash: 377 Jeff Kent: 377 80 Carlton Fisk* : 376 81 Rocky Colavito: 374 82 Gil Hodges
grep-i 'blair' filename.log | more. where the output from the grep process (all lines containing 'blair') is piped to the more process (which allows a command line user to read through results one page at a time). The same "pipe" feature is also found in later versions of DOS and Microsoft Windows.
Semgrep rules are similar to source code and do not require knowledge of a domain specific language to write. Both open source and commercial rules can be forked and customized to a user's codebase, however only commercial users are able to customize commercial rules. All users are free to fork and modify open source (community) rules. [7]
Instead of a brute-force search of all alignments (of which there are + ), Boyer–Moore uses information gained by preprocessing P to skip as many alignments as possible. Previous to the introduction of this algorithm, the usual way to search within text was to examine each character of the text for the first character of the pattern.