AwkChannelWiki: Search for: "FileName"

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AllAboutGetline
//Editor's notes: The article was originally posted on the comp.lang.awk newsgroup, and can still be . . . Set| |getline|$0, ${1...NF}, NF, FNR, NR, FILENAME| |getline var|var, FNR, NR, FILENAME| |getline . . . non-obvious effects of using it: **a)** Normally FILENAME is not set within a BEGIN section, but a non-redirected . . . will set it. **b)** Calling "getline < FILENAME" is NOT the same as calling "getline". The . . . second form will read the next record from FILENAME while the first form will read the first record . . .
16K - last updated 2009-02-15 22:14 UTC by waldner

awk nawk oawk
in 1977 there was awk.\\ this page attempts to explain the history of awk.\\ the 1978 7th Edition awk(1) . . . command line switch -d dumps debug info.\\ valid filenames /dev/stdin /dev/stdout /dev/stderr\\ {{{awk . . .
2K - last updated 2012-03-18 23:21 UTC by g0pher

AwkOnWindowsHowto
AwkOnWindowsHowto\\ rough cut - needs edit {{{ 3) awk command line switches/usage from a win32 cmd.exe . . . see above -f progfile next argument is program filename -f - read the program from stdin -F fs set . . . & " ^ % < > | = 5) miscellaneous valid filenames: /dev/stdin /dev/stdout /dev/stderr array . . . metacharacters: \ . ^ $ [ ] | + * ? ( ) #: filenames may Not contain: \ / : * ? " < > | . . .
3K - last updated 2010-10-24 07:44 UTC by g0pher

AwkTips
<toc> ---- == Be idiomatic! In this paragraph, we give some hints on how to write more idiomatic . . . condition by adding a test that checks that also FILENAME equals ARGV[1]. ---- == Pitfall: shorten pipelines . . .
31K - last updated 2009-03-24 16:54 UTC by waldner

BEGIN
== Begin Blocks The [[awk]] programming language allows us to use **begin blocks** and **end blocks** . . . that they are defined. == Special Variables === FILENAME Normally the FILENAME variable is not populated . . . a non redirected call to getline will cause FILENAME to become set. . . .
3K - last updated 2013-04-11 14:25 UTC by 92.40.253.171.threembb.co.uk

comp.lang.awk FAQ
This material of this faq originates from the comp.lang.awk FAQ that you can find there: * http://www.faqs.org/faqs/computer-lang/awk/faq/ . . . from which file my input is coming? <include "FileName"> [[http://awk.freeshell.org/?action=edit;id=FileName| . . . this answer]] === How can I explicitly pass in a filename to treat specially? <include "SpecialFile"> . . .
8K - last updated 2009-03-04 12:42 UTC by pgas

comp.lang.awk FAQJapanese
This material of this faq originates from the comp.lang.awk FAQ that you can find there: * http://www.faqs.org/faqs/computer-lang/awk/faq/ . . . from which file my input is coming? <include "FileNameJapanese"> [[http://awk.freeshell.org/?action=edit;id=FileNameJapanese| . . . this answer]] === How can I explicitly pass in a filename to treat specially? <include "SpecialFileJapanese"> . . .
4K - last updated 2008-11-24 09:01 UTC by pgas

Features of awk
The [[awk]] utility: * treats lines of a text as database records, which can be divided into fields. . . . syntax * is [[data driven]] * uses [[filename association]] rather than numbered streams . . .
1K - last updated 2011-05-27 15:33 UTC by markhobley

file
== Filename association == The [[awk]] programming language uses [[filename association]], rather than . . .
1K - last updated 2010-12-14 19:05 UTC by markhobley

FileName
the file name is stored in the built-in variable FILENAME: {{{ awk '/^#include/ {print FILENAME,$2}' . . .
1K - last updated 2008-11-18 13:31 UTC by pgas

FileNameJapanese
the file name is stored in the built-in variable FILENAME: {{{ awk '/^#include/ {print FILENAME,$2}' . . .
1K - last updated 2008-11-24 08:08 UTC by pgas

FirstFile
you can tell if awk is parsing the first file given on the command line using FILENAME, thusly: {{{ awk . . . { rulesfile="" } rulesfile == "" { rulesfile = FILENAME; } FILENAME == rulesfile { build_rule($0); . . . } FILENAME != rulesfile { apply_rule($0); } }}} Example: . . . { rulesfile="" } rulesfile == "" { rulesfile = FILENAME; } rulesfile == FILENAME { replace[$1] = $0; . . . } rulesfile != FILENAME \ { if ($1 in replace) print replace[$1]; . . .
1K - last updated 2008-11-18 13:34 UTC by pgas

FirstFileJapanese
you can tell if awk is parsing the first file given on the command line using FILENAME, thusly: {{{ awk . . . { rulesfile="" } rulesfile == "" { rulesfile = FILENAME; } FILENAME == rulesfile { build_rule($0); . . . } FILENAME != rulesfile { apply_rule($0); } }}} Example: . . . { rulesfile="" } rulesfile == "" { rulesfile = FILENAME; } rulesfile == FILENAME { replace[$1] = $0; . . . } rulesfile != FILENAME \ { if ($1 in replace) print replace[$1]; . . .
1K - last updated 2008-11-24 08:09 UTC by pgas

FIXES
[[FIXES]]        revised:   . . . it would have been opened if it were a filename (p 63).\\ added some missing ansi printf conversion . . . a separate -v for each assignment.\\ \\ FILENAME is now defined in the BEGIN block (Oct 11, . . . command line switch -d dumps debug info.\\ valid filenames /dev/stdin /dev/stdout /dev/stderr\\ can . . .
6K - last updated 2014-01-15 23:17 UTC by g0ph3r

FNR
The *FNR* informative [[special variable]] is used to track the number of [[record]]s that have so far . . . to a file using [[awk]]: awk '{print FNR,$0 }' filename . . .
1K - last updated 2011-05-08 11:04 UTC by markhobley

getline
The *getline* command can obtain input from any number of files and does not require a command line parameter . . . to be provided for the [filename]. The following summarises six variants of . . . Set* | getline | $0, ${1...NF}, NF, FNR, NR, FILENAME | getline foobar | foobar, FNR, NR, FILENAME . . .
1K - last updated 2011-05-02 20:14 UTC by markhobley

include
The [[awk]] extraction and reporting language does not support the use of include files. However, it . . . files. === _There should not be more than one filename on the hashbang line_ It is not permissible . . .
2K - last updated 2013-03-30 10:38 UTC by markhobley

input
The [[awk]] utility can take its input from [[standard input]] or from [[file]]s. If no input files are . . . particular file without the need to specify the filename as a command line parameter. == Special variables . . .
2K - last updated 2011-05-19 22:40 UTC by markhobley

MultipleFiles
<toc> === Version warning Some of these techniques will require non-ancient versions of awk. === . . . from which file my input is coming? <include "FileName"> [[http://awk.freeshell.org/?action=edit;id=FileName| . . . this answer]] === How can I explicitly pass in a filename to treat specially? <include "SpecialFile"> . . .
2K - last updated 2008-11-18 13:38 UTC by pgas

NF
= Number of Fields = The [[special variable]] NF holds the number of [[field]]s in the [[current record]]. . . . from each [[record]]: {{{ awk '{ print $1,$NF }' filename }}} . . .
1K - last updated 2011-05-28 15:14 UTC by markhobley

OpeningFiles
You can open files dynamically using `getline', `close', and `print EXPR > FILENAME', like: {{{ awk . . . 1 line, output file writeable function double(infilename,outfilename, aline) { while ( (getline aline . . . < infilename) >0 ) print(aline aline) > outfilename; . . . close(infilename); close(outilename); } }}} . . .
1K - last updated 2008-11-18 13:33 UTC by pgas

OpeningFilesJapanese
You can open files dynamically using `getline', `close', and `print EXPR > FILENAME', like: {{{ awk . . . 1 line, output file writeable function double(infilename,outfilename, aline) { while ( (getline aline . . . < infilename) >0 ) print(aline aline) > outfilename; . . . close(infilename); close(outilename); } }}} . . .
1K - last updated 2008-11-24 08:09 UTC by pgas

printf
== Usage == === printf [ FORMAT, LIST ] === The **printf** [[variadic]] function provides generic [[string . . . printf "%s ", $i;print ""}' filename }}} Do NOT print the first word on each line: . . . printf "%s ", $i;print ""}' filename }}} Print 3rd to 5th words in each line: {{{ . . . printf "%s ", $i;print "" }' filename }}} Print the first to the eighth word on . . . while(++i<8) printf("%s ", $i); print $i }' filename }}} Delete all newline characters in a file: . . .
2K - last updated 2011-06-09 20:34 UTC by markhobley

Shells
The examples using quoting are intended for use with any standard (sh-compatible-quoting) Unix shell. . . . when put in a file and invoked with `awk -f filename.awk' instead. Non-sh-compatible shells will . . .
1K - last updated 2008-11-19 07:37 UTC by pgas

ShellsJapanese
The examples using quoting are intended for use with any standard (sh-compatible-quoting) Unix shell. . . . when put in a file and invoked with `awk -f filename.awk' instead. Non-sh-compatible shells will . . .
1K - last updated 2008-11-24 08:04 UTC by pgas

special variable
Some [[variable]] names have a special meaning to the awk interpreter. == List of special variables == . . . array that contains the environment strings | [[FILENAME]] | An informative variable that provides . . . the current input [[filename]] | [[FNR]] | An informative variable that . . .
2K - last updated 2011-06-25 05:46 UTC by pgas

SpecialFile
You can use `-v rulesfile=filename' to process a file differently, like you would any other variable, . . . (rulesfile=="") { print "must use -v rulesfile=filename"; exit(1); } while ( (getline < rulesfile) . . .
1K - last updated 2008-11-18 13:37 UTC by pgas

SpecialFileJapanese
You can use `-v rulesfile=filename' to process a file differently, like you would any other variable, . . . (rulesfile=="") { print "must use -v rulesfile=filename"; exit(1); } while ( (getline < rulesfile) . . .
1K - last updated 2008-11-24 08:09 UTC by pgas

text.2.wiki.awk
#:       C:\#\awk\lib\text.2.wiki.awk\\ . . . $ . [ ] | ( ) * + ? escape with \ }}} \\ {{{ #: filenames may Not contain: \ / : * ? " < > | . . . exefile opts }}} \\ {{{ #: shexec open|print filename }}} \\ {{{ #: \a \007 sp\040 !\041 "\042 #\043 . . .
11K - last updated 2012-09-24 14:55 UTC by g0ph3r

text 2 wiki.awk
{{{ #: C:\#\lib\awk\utl\text_2_wiki.awk #: 2012-09-15 23:40:11 #:rod.t_2012 #: This file is http://awk.freeshell.org/text_2_wiki.awk . . . \ ^ $ . [ ] | ( ) * + ? escape with \ #: filenames may Not contain: \ / : * ? " < > | . . . exefile opts #: shexec open|print filename #: \a \007 sp\040 !\041 "\042 #\043 $\044 . . .
2K - last updated 2012-09-16 09:12 UTC by g0ph3r

tracert.awk
{{{ awk #:: C:\_\_u\tracert.awk #: 2014-07-06 19:47:02 #:: rod.t_2014 #:: extract basename for tracert . . . metachars: \ / ^ $ . [ ] | ( ) * + ? #: filenames may Not contain: \ / : * ? " < > | . . .
4K - last updated 2014-07-07 06:15 UTC by 212.205.56.222

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