You're making the same mistakes again. This:
is almost always wrong since you can do it all with awk '{ extract something } ' file-with-9000-lines-of-junk in one operation instead of 9,000.
If you must save all its output, then:
Note that set -- overwrites your $1 $2 ... commandline variables.
Also note that functions have their own, independent set of $1 $2 ... variables. set -- there does not overwrite the global ones.
It splits it, yes. But as you've discovered it's possible to get blank elements. And usually there's no point in doing so -- string splitting works everywhere, not just in arrays, so why not cut out the middleman and do it directly?
Last edited by Corona688; 09-13-2012 at 02:16 PM..
Is there a command that sets a variable length?
I have a input of a variable length field but my output for that field needs to be set to 32 char.
Is there such a command?
I am on a sun box running ksh
Thanks (2 Replies)
Hi ,
I have a peculiar case, where my sed command is working on a file which contains lines of small length.
sed "s/XYZ:1/XYZ:3/g" abc.txt > xyz.txt
when abc.txt contains lines of small length(currently around 80 chars) , this sed command is working fine.
when abc.txt contains lines of... (3 Replies)
Very, very new to unix scripting and have a unique situation. I have a file of records that contain 3 records types:
(H)eader Records
(D)etail Records
(T)railer Records
The Detail records are 82 bytes in length which is perfect. The Header and Trailer records sometimes are 82 bytes in... (3 Replies)
Hi,
Can anyone help with a effective solution ?
I need to change a variable length text field (between 1 - 18 characters) to a fixed length text of 18 characters with the unused portion, at the end, filled with spaces.
The text field is actually field 10 of a .csv file however I could cut... (7 Replies)
Hello Everyone,
I'm running AIX 5.3 and need to generate a 100 character fixed length empty file from within a bash script that I am developing.
I searched and was able to find:
dd if=/dev/zero of=/test/path/file count=100
however my understanding is that this will generate a file of a... (10 Replies)
Hello Everyone,
I am stuck with one issue while working on abstract flat file which i have to use as input and load data to table.
Input Data-
------ ------------------------ ---- -----------------
WFI001 Xxxxxx Control Work Item A Number of Records
------ ------------------------... (5 Replies)
Hi Team,
I have an issue to split the file which is having special chracter(German Char) using awk command.
I have a different length records in a file. I am separating the files based on the length using awk command.
The command is working fine if the record is not having any... (7 Replies)
Discussion started by: Anthuvan
7 Replies
LEARN ABOUT REDHAT
net::daemon::test
Net::Daemon::Test(3) User Contributed Perl Documentation Net::Daemon::Test(3)NAME
Net::Daemon::Test - support functions for testing Net::Daemon servers
SYNOPSIS
# This is the server, stored in the file "servertask".
#
# Create a subclass of Net::Daemon::Test, which in turn is
# a subclass of Net::Daemon
use Net::Daemon::Test ();
package MyDaemon;
@MyDaemon::ISA = qw(Net::Daemon::Test);
sub Run {
# Overwrite this and other methods, as you like.
}
my $self = Net::Daemon->new(\%attr, @options);
eval { $self->Bind() };
if ($@) {
die "Server cannot bind: $!";
}
eval { $self->Run() };
if ($@) {
die "Unexpected server termination: $@";
}
# This is the client, the real test script, note we call the
# "servertask" file below:
#
# Call the Child method to spawn a child. Don't forget to use
# the timeout option.
use Net::Daemon::Test ();
my($handle, $port) = eval {
Net::Daemon::Test->Child(5, # Number of subtests
'servertask', '--timeout', '20')
};
if ($@) {
print "not ok 1 $@
";
exit 0;
}
print "ok 1
";
# Real tests following here
...
# Terminate the server
$handle->Terminate();
DESCRIPTION
This module is a frame for creating test scripts of Net::Daemon based server packages, preferrably using Test::Harness, but that's your
choice.
A test consists of two parts: The client part and the server part. The test is executed by the child part which invokes the server part,
by spawning a child process and invoking an external Perl script. (Of course we woultn't need this external file with fork(), but that's
the best possibility to make the test scripts portable to Windows without requiring threads in the test script.)
The server part is a usual Net::Daemon application, for example a script like dbiproxy. The only difference is that it derives from
Net::Daemon::Test and not from Net::Daemon, the main difference is that the Bind method attempts to allocate a port automatically. Once a
port is allocated, the number is stored in the file "ndtest.prt".
After spawning the server process, the child will wait ten seconds (hopefully sufficient) for the creation of ndtest.prt.
AVAILABLE METHODS
Server part
Options Adds an option --timeout to Net::Daemon: The server's Run method will die after at most 20 seconds.
Bind (Instance method) This is mainly the default Bind method, but it attempts to find and allocate a free port in two ways: First of
all, it tries to call Bind with port 0, most systems will automatically choose a port in that case. If that seems to fail, ports
30000-30049 are tried. We hope, one of these will succeed. :-)
Run (Instance method) Overwrites the Net::Daemon's method by adding a timeout.
sub Run ($) {
my $self = shift;
$self->Run(); }
Client part
Child (Class method) Attempts to spawn a server process. The server process is expected to create the file 'ndtest.prt' with the port
number.
The method returns a process handle and a port number. The process handle offers a method Terminate that may later be used to stop
the server process.
AUTHOR AND COPYRIGHT
Net::Daemon is Copyright (C) 1998, Jochen Wiedmann
Am Eisteich 9
72555 Metzingen
Germany
Phone: +49 7123 14887
Email: joe@ispsoft.de
All rights reserved.
You may distribute under the terms of either the GNU General Public License or the Artistic License, as specified in the Perl README file.
SEE ALSO Net::Daemon(3), Test::Harness(3)perl v5.12.1 2007-05-23 Net::Daemon::Test(3)