When i run script with option 1 it works, however if I assign path to variable $tmpfile and try to use that it writes to $tmpfile and not /var/tmp/abc.tmp, what am I missing?
1.
open (CAPTURE, '>>tmpfile');
print CAPTURE "$T1,$T2,$T3";
close (CAPTURE);
2.
my $tmpfile='/var/tmp/abc.tmp';
open (CAPTURE, '>>$file');
print CAPTURE "$T1,$T2,$T3";
close (CAPTURE);
Change the single quotes ' ' in option 2 to double quotes " "
In Perl, no variable interpolation takes place inside single quotes but does in double quotes. In single quotes, open is trying to open a file literally called '$file" and of course fails.
You will solve your own problem on something like this if you check the return of open like so:
Code:
open (CAPTURE, ">>$file") || die "can't open $file cause $!"
Also, the for of open you are using there is being deprecated for a three argement form with a scalar handle. It allows the Perl interpreter to give you more meaningful error and compile errors if you use the 3 arg form of open:
hello all
im trying to capture only the first brackets but no matter what i do i keep capturing from the first brackets to the last one , here what i have :
<% if (!Env.strLen(oidInvoice)); szDocumentTitle = Env.formatS("S",Env.getMsg("BP_INVOICE_ENUMERATION_CREATE_TITLE")) %>
and... (1 Reply)
a file test.dat has the following
David Veterinarian
John Orthopedist
Jeff Dentist
perl -p -e "s/\s*(\w+).*/$1/;" test.dat ......will print
David
Jonh
Jeff
how does the part in double quotes work out.... (1 Reply)
can any1 give me line by line explanation for the following perl script
as i dunno perl .. n i have searched in google .. but still thn i wanna confirm my findings fro perl experts :mad:
perl -e 'while (<>)
{
print;
$num = 2 if /fail_halt/i;
$num = 1 if (/failure/i && ($num < 1));
}... (2 Replies)
Guys,
I guess, I posted something in the wrong forum. Here it is -
https://www.unix.com/shell-programming-scripting/67395-perl-postgrepsql-question.html
Can you please help me with this?
Regards,
garric (0 Replies)
Hi,
I googled a bit, but could not find the answer to my problem.
But I am sure it is a common issue.
I have this code:
#!/bin/perl -w #-d
use strict;
sub remsh_test()
{
my $host = $_;
printf "\n----\n\n";
printf "remsh to $host with system call\n";
my $result = system... (3 Replies)
I'm Using this script to find the time of a file. I'm very much new to PERL
and found this script posted by some one on this forum.
It runs perfectly fine, just that it gives me following errors with the
accurate output as well. I jus want the output to be stored in another file
so that i can... (0 Replies)
Hi All,
I am connecting to Oracle DB from UNIX script. Want to capture all dates between start date and end date and store them in file. Once this is done, want to read dates one by one. How to achive this in UNIX and Oracle? Please let me know if you have any idea on the same.
Thanks and... (4 Replies)
Hi ,
Im using the below script to find the Good and Bad for the file permission.
$rc=`find /etc/security/opasswd -perm 0600 -print -ls`;
if($rc == 1)
{
print "GOOD: AD.1.8.4.1: The file /etc/security/opasswd exists and had permission 0600\n\n";
... (6 Replies)
Hi,
I am trying to capture the output of the an open pipe in perl. but I am not sure how to do this. can some one please help me do that?
Below is the script I am using (2 Replies)
Discussion started by: ahmedwaseem2000
2 Replies
LEARN ABOUT DEBIAN
tmpfile
TMPFILE(3) Linux Programmer's Manual TMPFILE(3)NAME
tmpfile - create a temporary file
SYNOPSIS
#include <stdio.h>
FILE *tmpfile(void);
DESCRIPTION
The tmpfile() function opens a unique temporary file in binary read/write (w+b) mode. The file will be automatically deleted when it is
closed or the program terminates.
RETURN VALUE
The tmpfile() function returns a stream descriptor, or NULL if a unique filename cannot be generated or the unique file cannot be opened.
In the latter case, errno is set to indicate the error.
ERRORS
EACCES Search permission denied for directory in file's path prefix.
EEXIST Unable to generate a unique filename.
EINTR The call was interrupted by a signal.
EMFILE Too many file descriptors in use by the process.
ENFILE Too many files open in the system.
ENOSPC There was no room in the directory to add the new filename.
EROFS Read-only file system.
CONFORMING TO
SVr4, 4.3BSD, C89, C99, SUSv2, POSIX.1-2001.
NOTES
POSIX.1-2001 specifies: an error message may be written to stdout if the stream cannot be opened.
The standard does not specify the directory that tmpfile() will use. Glibc will try the path prefix P_tmpdir defined in <stdio.h>, and if
that fails the directory /tmp.
SEE ALSO exit(3), mkstemp(3), mktemp(3), tempnam(3), tmpnam(3)COLOPHON
This page is part of release 3.44 of the Linux man-pages project. A description of the project, and information about reporting bugs, can
be found at http://www.kernel.org/doc/man-pages/.
2008-07-14 TMPFILE(3)