|
Size: 1108
Comment:
|
← Revision 8 as of 2023-06-22 20:03:20 ⇥
Size: 1218
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 3: | Line 3: |
| '''`awk(1)`''' is a scripting language designed for text processing. There are several implementation of '''`awk(1)`''': * Brian Kernighan [[https://github.com/onetrueawk/awk|open-sourced]] the original Unix implementation * '''GNU awk''' (or '''gawk''') is an extended implementation * [[BusyBox]] implements POSIX `awk(1)` * the modern revivalist [[https://github.com/benhoyt/goawk|GoAWK]] See the [[https://www.gnu.org/software/gawk/manual/gawk.html|GNU awk User Manual]] for further documentation. |
'''`awk(1p)`''' is a scripting language designed for text processing. |
| Line 26: | Line 17: |
| A better example is extracting the hostnames from the [[Linux/hosts|hosts file]]. | A more realistic example is extracting hostnames from the [[Linux/Hosts|hosts file]]. |
| Line 32: | Line 23: |
| The awk syntax can be written to a script file and executed like: | Execute a script as: |
| Line 42: | Line 33: |
| To make an awk script executable, use `#! /bin/awk -f` as the shebang line. | To make an `awk(1p)` script executable, use `#! /bin/awk -f` as the shebang line. ---- == Installation == `awk(1p)` will be installed on all [[Linux]] or [[BSD]] distributions. There are several implementations, some of which are available on additional platforms. * Brian Kernighan [[https://github.com/onetrueawk/awk|open-sourced]] the original Unix implementation * '''GNU awk''' (or '''gawk''') is an extended implementation * [[BusyBox]] * [[https://github.com/benhoyt/goawk|GoAWK]] |
| Line 53: | Line 59: |
| ---- == See also == [[https://man.archlinux.org/man/awk.1p|awk(1p)]] [[https://www.gnu.org/software/gawk/manual/gawk.html|GNU awk user manual]] |
Awk
awk(1p) is a scripting language designed for text processing.
Example
awk 'BEGIN { print "hello world" }'A more realistic example is extracting hostnames from the hosts file.
awk '/^[^#]/ { print $2 }' /etc/hostsExecute a script as:
awk -f my-hosts-parser.awk /etc/hosts
Shebang
To make an awk(1p) script executable, use #! /bin/awk -f as the shebang line.
Installation
awk(1p) will be installed on all Linux or BSD distributions.
There are several implementations, some of which are available on additional platforms.
Brian Kernighan open-sourced the original Unix implementation
GNU awk (or gawk) is an extended implementation
Syntax