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Full Discussion: Extracting numbers from a String
Top Forums UNIX for Dummies Questions & Answers Extracting numbers from a String Post 302421166 by pseudocoder on Thursday 13th of May 2010 03:19:58 PM
Old 05-13-2010
This is somewhat like a Perl equivalent to denn's approach:
Code:
echo "170 unique conformations found" | perl -ane 'foreach my $rec (@F) {print "$rec\n" if "$rec" !~ m/[A-Za-z]/;}'

To put the output in a variable:
Code:
var=$(echo "170 unique conformations found" | perl -ane 'foreach my $rec (@F) {print "$rec\n" if "$rec" !~ m/[A-Za-z]/;}')

 

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LEARN ABOUT XFREE86

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)
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