07-05-2008
So before your sed, you need to test if the string exists in the file, something like
grep -q "String" <filename> >& /dev/null
if ($status == 0) then
echo "String exist, do something"
else
echo "do something else or exit" >> <filename>
endif
syntax neeeds clearing up bu the skeletal is there & a more elegant 1 line job (.e.e. perl) may be around too
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LEARN ABOUT DEBIAN
boulder::string
Boulder::String(3pm) User Contributed Perl Documentation Boulder::String(3pm)
NAME
Boulder::String - Read and write tag/value data from a string.
SYNOPSIS
#!/bin/perl
# Read a B<Stone> from stdin and create a string that can be
# passed to a dumb sub, which doesn't know about Stones.
use Boulder::Stream;
use Boulder::String;
my $stream = Boulder::Stream->newFh;
# read a stone from stdin
my $record = <$stream> );
print $stream $record;
}
DESCRIPTION
Boulder::String provides access to Boulder IO hierarchical tag/value data. Stone objects printed to the tied string are appended to the
string in Boulder format.
Boulder::Stream METHODS
$stream = Boulder::Stream->new($in_string,$out_string);
The new() method creates a new Boulder::String object. You must provide an input string and a reference to an output string. The input
string may be empty.
$stream->write_record($stone)
Write the passed stone in Boulder IO format into $out_string.
AUTHOR
Lincoln D. Stein <lstein@cshl.org>, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY. This module can be used and distributed on the
same terms as Perl itself.
Patches and bug fixes contributed by Bernhard Schmalhofer <bernhard@biomax.de>.
SEE ALSO
Boulder, Boulder::Stream, Boulder::Blast, Boulder::Genbank, Boulder::Medline, Boulder::Unigene, Boulder::Omim, Boulder::SwissProt
perl v5.10.1 2000-12-04 Boulder::String(3pm)