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sed ("stream editor") is a Unix utility that parses and transforms text, using a simple, compact programming language. It was developed from 1973 to 1974 by Lee E. McMahon of Bell Labs, [1] and is available today for most operating systems. [2] sed was based on the scripting features of the interactive editor ed ("editor", 1971) and the earlier ...
grep is a command-line utility for searching plain-text data sets 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. [3] [4] grep was originally developed for the Unix operating system, but later available for all Unix-like systems ...
fc-match: Matches font-pattern (empty pattern by default) using the normal fontconfig matching rules to find the most appropriate font available. fc-cache : Creates a cache of all FreeType readable fonts in a specified directory or create a cache of all FreeType readable fonts from all directories specified in the configuration files .
glob (programming) In computer programming, glob ( / ɡlɒb /) patterns specify sets of filenames with wildcard characters. For example, the Unix Bash shell command mv *.txt textfiles/ moves all files with names ending in .txt from the current directory to the directory textfiles. Here, * is a wildcard and *.txt is a glob pattern.
Perl Compatible Regular Expressions ( PCRE) is a library written in C, which implements a regular expression engine, inspired by the capabilities of the Perl programming language. Philip Hazel started writing PCRE in summer 1997. [3] PCRE's syntax is much more powerful and flexible than either of the POSIX regular expression flavors (BRE, ERE ...
Type. Pattern matching. wildmat is a pattern matching library developed by Rich Salz. Based on the wildcard syntax already used in the Bourne shell, wildmat provides a uniform mechanism for matching patterns across applications with simpler syntax than that typically offered by regular expressions. Patterns are implicitly anchored at the ...
In computer science, pattern matching is the act of checking a given sequence of tokens for the presence of the constituents of some pattern. In contrast to pattern recognition, the match usually has to be exact: "either it will or will not be a match." The patterns generally have the form of either sequences or tree structures.
Apache Subversion (often abbreviated SVN, after its command name svn) is a software versioning and revision control system distributed as open source under the Apache License. [2] Software developers use Subversion to maintain current and historical versions of files such as source code, web pages, and documentation.