A normal for-loop? I don't see why you've taken this approach at all.
I'm trying to work on an expanded version of this:
...but running into memory limitations. I may have to shrink all the images before I begin. Which makes sense since I'd have to shrink them severely to view the entire image at once anyway.
hello,
I use AIX with ISM PILOT, I want to match something with a varible like this :
$variable = 10 #this variable is the number of the job
"$variable STARTED" # the pattern
how can use this variable to match it with the word STARTED
Tanks (0 Replies)
Hi!
I wanted to use a while loop, like the one below, for checking words extracted by awk to terminate when a specific word appears. Unfortunately whenever I put my code inside the loop I get an error "Expression recursion level exceeded". What does it mean? What recursion? I don't have any... (4 Replies)
I hope this is not a duplicate thread, but i didn't find anything similar...
I had this script:
filename1=/swkgr/bin/risk/GF2KGR/arch/GF2KGR_M_
filename2=/swkgr/bin/risk/GF2KGR/arch/GF2KGR_D_
day='date +%m%d'
echo $filename1$day
echo $filename2$day
and i want this output:
... (7 Replies)
Hi,
i want to use regular expression in a for loop like this.
for var in "/Mar/2010"
do
echo "Usage for the date $var"
-----and want to grep $var partten from a file--------
done
and it is not working.
I am new to shell scripting, any one has any idea how to do it. (5 Replies)
hi,
i'm reading a file "LISTE_FILE" like :
#
$LOGCOM * 5
$PRCCOM * 10
and i want to use the file with "while" and having the fields splitted into new variables for treatment :
while read LINE
do
# Ignorer les commentaires un # en premiere position
if
then... (3 Replies)
eval echo \$tts_space_name$count
i m getting output of this stmnt as
'TBS_ADOX_EXTR3'
but,
I m not able to assign this value to a variable .
i tried
export j=`eval echo \$tts_space_name$count`
eval j= `eval echo \$tts_space_name$count`
and when i do echo $j ... i get o/p as 1 or 2... (1 Reply)
Hello All,
Maybe I'm Missing something here but I have NOOO idea what the heck is going on with this....?
I have a Variable that contains a PATTERN of what I'm considering "Illegal Characters". So what I'm doing is looping
through a string containing some of these "Illegal Characters". Now... (5 Replies)
Hi All,
I have a file which has hundred of records with fixed number of fields. In each record there is set of 8 characters which represent the duration of that activity. I want to sum up the duration present in all the records for a report. The problem is the duration changes per record so I... (5 Replies)
Hi
i tried to execute a below script but it is giving execution error
rec=ABC,1234,55.00
Colno=2
coldel=,
fd='"'$coldel'"'
fprint="'"'{print$'$colno'}'"'"
colsyn=`echo "echo "$rec "| awk -F"$fd $fprint`
echo column syntax is $colsyn
colrec=`colsyn`
echo column is $colrec (5 Replies)
I'm trying to use a series of regular expressions as variables but can't get it to behave properly.
You can see below what I'm trying to do.
Here with lowercase a-z and the same with uppercase, numbers 0-9 and again with a set of special characters, without having to type out every single... (3 Replies)
Discussion started by: 3therk1ll
3 Replies
LEARN ABOUT CENTOS
io::pipe
IO::Pipe(3pm) Perl Programmers Reference Guide IO::Pipe(3pm)NAME
IO::Pipe - supply object methods for pipes
SYNOPSIS
use IO::Pipe;
$pipe = IO::Pipe->new();
if($pid = fork()) { # Parent
$pipe->reader();
while(<$pipe>) {
...
}
}
elsif(defined $pid) { # Child
$pipe->writer();
print $pipe ...
}
or
$pipe = IO::Pipe->new();
$pipe->reader(qw(ls -l));
while(<$pipe>) {
...
}
DESCRIPTION
"IO::Pipe" provides an interface to creating pipes between processes.
CONSTRUCTOR
new ( [READER, WRITER] )
Creates an "IO::Pipe", which is a reference to a newly created symbol (see the "Symbol" package). "IO::Pipe::new" optionally takes two
arguments, which should be objects blessed into "IO::Handle", or a subclass thereof. These two objects will be used for the system call
to "pipe". If no arguments are given then method "handles" is called on the new "IO::Pipe" object.
These two handles are held in the array part of the GLOB until either "reader" or "writer" is called.
METHODS
reader ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the reading end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
writer ([ARGS])
The object is re-blessed into a sub-class of "IO::Handle", and becomes a handle at the writing end of the pipe. If "ARGS" are given
then "fork" is called and "ARGS" are passed to exec.
handles ()
This method is called during construction by "IO::Pipe::new" on the newly created "IO::Pipe" object. It returns an array of two objects
blessed into "IO::Pipe::End", or a subclass thereof.
SEE ALSO
IO::Handle
AUTHOR
Graham Barr. Currently maintained by the Perl Porters. Please report all bugs to <perlbug@perl.org>.
COPYRIGHT
Copyright (c) 1996-8 Graham Barr <gbarr@pobox.com>. All rights reserved. This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
perl v5.16.3 2013-03-04 IO::Pipe(3pm)