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Full Discussion: Regular expression in AWK
Top Forums Shell Programming and Scripting Regular expression in AWK Post 302314394 by Franklin52 on Friday 8th of May 2009 07:48:04 AM
Old 05-08-2009
Quote:
Originally Posted by vgersh99
how 'bout;
Code:
awk '
FNR==NR { tok1=($1 ~ "^m([24689]|10)$" ? 1 : 0}
' my_file

There's a missing close parenthesis after the last zero and NR==FNR is unnecessary if you have 1 input file, this should be sufficient:

Code:
awk '{tok1=/^m([24689]|10)$/?1:0}' file

 

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LEARN ABOUT DEBIAN

jlessecho

LESSECHO(1)						      General Commands Manual						       LESSECHO(1)

NAME

       lessecho - expand metacharacters

SYNOPSIS

       lessecho [-ox] [-cx] [-pn] [-dn] [-mx] [-nn] [-ex] [-a] file ...

DESCRIPTION

       lessecho is a program that simply echos its arguments on standard output.  But any argument containing spaces is enclosed in quotes.

OPTIONS

       A summary of options is included below.

       -ox    Specifies "x" to be the open quote character.

       -cx    Specifies "x" to be the close quote character.

       -pn    Specifies "n" to be the open quote character, as an integer.

       -dn    Specifies "n" to be the close quote character, as an integer.

       -mx    Specifies "x" to be a metachar.

       -nn    Specifies "n" to be a metachar, as an integer.

       -ex    Specifies "x" to be the escape char for metachars.

       -fn    Specifies "n" to be the escape char for metachars, as an integer.

       -a     Specifies that all arguments are to be quoted.  The default is that only arguments containing spaces are quoted.

SEE ALSO

       less(1)

AUTHOR

       This manual page was written by Thomas Schoepf <schoepf@debian.org>, for the Debian GNU/Linux system (but may be used by others).

       Send bug reports or comments to bug-less@gnu.org.

							     Version 394: 03 Dec 2005						       LESSECHO(1)
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