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cat is a standard Unix utility that reads files sequentially, writing them to standard output. The name is derived from its function to (con) cat enate files (from Latin catenare , "to chain"). [ 1 ] [ 2 ] It has been ported to a number of operating systems.
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.
Several open-source scripts have been developed to facilitate the construction of Python one-liners. Scripts such as pyp or Pyline import commonly used modules and provide more human-readable variables in an attempt to make Python functionality more accessible on the command line. Here is a redo of the above example (printing the last field of ...
Python: python.org: Python Software Foundation License: Python has two major implementations, the built in re and the regex library. Ruby: ruby-doc.org: GNU Library General Public License: Ruby 1.8, Ruby 1.9, and Ruby 2.0 and later versions use different engines; Ruby 1.9 integrates Oniguruma, Ruby 2.0 and later integrate Onigmo, a fork from ...
xargs (short for "extended arguments") [1] is a command on Unix and most Unix-like operating systems used to build and execute commands from standard input.It converts input from standard input into arguments to a command.
AWK (/ ɔː k / [4]) is a domain-specific language designed for text processing and typically used as a data extraction and reporting tool. Like sed and grep, it is a filter, [4] and it is a standard feature of most Unix-like operating systems.
Semgrep has stable support for over 30 languages including C#, C, C++, Go, Java, JavaScript, JSON, Python, PHP, Ruby, and Scala. Language support on semgrep OSS is community driven and does not support interprocedural or interfile analysis. [4]
find.-name "*.foo"-exec grep bar {} + This searches in all files in the current directory and its subdirectories whose name end in .foo for occurrences of the string bar . The parallel command will work as expected unless a file name contains a newline .