Category:AWK

From Rosetta Code
Language
AWK
This programming language may be used to instruct a computer to perform a task.
Execution method: Interpreted
See Also:


Listed below are all of the tasks on Rosetta Code which have been solved using AWK.

AWK is a small but powerful programming language that can process and convert text files. AWK is part of every Unix-derived system.

Each AWK program consists of pattern-action statements. The program reads each input line, checks lines against patterns, and runs matching actions. For programs that never read input lines, the entire program can be one BEGIN { ... } block.

  • List users who have /bin/ksh as a shell.<lang awk>$ awk -F: '$7 == "/bin/ksh" { print $1 }' /etc/passwd</lang>

AWK has only three types of variables: they are strings, floating-point numbers, and associative arrays (where every array index is a string). Conversion between strings and numbers is automatic. AWK also has regular expressions, which appear in many AWK programs. There are a few built-in functions, like cos() and sprintf().

  • Find average line length.<lang awk>$ awk '{ cnt += length($0) } END { print cnt / NR }' /etc/rc</lang>

The name "AWK" comes from the initials of Alfred Aho, Peter Weinberger and Brian Kernighan: they invented AWK during the 1970s. A few decades later, Kernighan continues to maintain the reference implementation of AWK.

Links[edit]

Online-Execution[edit]

  • ideone.com - gawk, mawk (both are kept up to date)

Todo[edit]

Reports:Tasks_not_implemented_in_AWK

Subcategories

This category has the following 4 subcategories, out of 4 total.

Pages in category "AWK"

The following 200 pages are in this category, out of 701 total.

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