my problem is to catch the issue, that there is nothing being piped in. Example:
Yes, feeding it works:
This hangs and waits for input, like a grep in a shell waiting for input. Can only break it with Ctrl+c:
I am looking for a way to notice, that there is nothing to be read from STDIN so I can end the script with some error message.
I am trying to create a perl script that will make sure a web page can be accessed going through an Apache httpd. The actual content of the web page does not matter. Most likely the web page will just have "You have successfully reached this port." This script will eventually be running... (5 Replies)
Hi,
i'm designing a unix script and i want to know if there is a shell command or a way to see if perl is installed in the system.
thanks in advance! (5 Replies)
I'm using the fabulous perl. I need a way to tell when a piped call to "open" has completed. Can I do this with a command like <ShellPipe> ??
Reason behind this:
I'm trying to write a backup script in perl! This script will download a certain file from my web server, to my computer.
Now,... (0 Replies)
hi everybody;
my code is cheking if a port is an actif or not with the cmd netstat -ln,I want first to enter the number of the port which I want to check it but I think that the value of $con in the second "if" is always "0" so the code give me always that the port is not used!!!
... (5 Replies)
I am trying to execute a piped combination of shell commands inside a perl program.
However, it is not working as desired.
This is my program, i am trying to print only filenames from the output of ls -l
$ cat list_test
#!/usr/bin/perl -w
use strict;
my $count=0;
my @list=`ls -l|awk... (4 Replies)
Hi Experts,
I am checking how to get day in Perl.
If it is “Monday” I need to process…below is the pseudo code.
Can you please prove the code for below condition.
if (today=="Monday" )
{
while (current_time LESS THAN 9:01 AM)
... (1 Reply)
Hello,
I'm pretty stumped, and I don't know why I am not able to redirect the output to the 'graphme' file with the command below in Fedora 18.
tcpdump -l -n -t "tcp == 18" | perl -ane '($s,$j)=split(/,/,$F,2); print "$s\n";' > graphme
In case you're wondering, I was following the example... (2 Replies)
My issue is that the perl script (as I have done it so far) created empty branches when I try to check some branches on existence.
I am using multydimentional hashes: found it as the best way for information that I need to handle. Saing multidimentional I means hash of hashes ... So, I have
... (2 Replies)
Discussion started by: alex_5161
2 Replies
LEARN ABOUT NETBSD
elfedit
ELFEDIT(1) GNU Development Tools ELFEDIT(1)NAME
elfedit - Update the ELF header of ELF files.
SYNOPSIS
elfedit [--input-mach=machine]
[--input-type=type]
[--input-osabi=osbi]
--output-mach=machine
--output-type=type
--output-osabi=osbi
[-v|--version]
[-h|--help]
elffile...
DESCRIPTION
elfedit updates the ELF header of ELF files which have the matching ELF machine and file types. The options control how and which fields
in the ELF header should be updated.
elffile... are the ELF files to be updated. 32-bit and 64-bit ELF files are supported, as are archives containing ELF files.
OPTIONS
The long and short forms of options, shown here as alternatives, are equivalent. At least one of the --output-mach, --output-type and
--output-osabi options must be given.
--input-mach=machine
Set the matching input ELF machine type to machine. If --input-mach isn't specified, it will match any ELF machine types.
The supported ELF machine types are, L1OM and x86-64.
--output-mach=machine
Change the ELF machine type in the ELF header to machine. The supported ELF machine types are the same as --input-mach.
--input-type=type
Set the matching input ELF file type to type. If --input-type isn't specified, it will match any ELF file types.
The supported ELF file types are, rel, exec and dyn.
--output-type=type
Change the ELF file type in the ELF header to type. The supported ELF types are the same as --input-type.
--input-osabi=osabi
Set the matching input ELF file OSABI to osbi. If --input-osabi isn't specified, it will match any ELF OSABIs.
The supported ELF OSABIs are, none, HPUX, NetBSD, Linux, Hurd, Solaris, AIX, Irix, FreeBSD, TRU64, Modesto, OpenBSD, OpenVMS, NSK, AROS
and FenixOS.
--output-osabi=osabi
Change the ELF OSABI in the ELF header to type. The supported ELF OSABI are the same as --input-osabi.
-v
--version
Display the version number of elfedit.
-h
--help
Display the command line options understood by elfedit.
@file
Read command-line options from file. The options read are inserted in place of the original @file option. If file does not exist, or
cannot be read, then the option will be treated literally, and not removed.
Options in file are separated by whitespace. A whitespace character may be included in an option by surrounding the entire option in
either single or double quotes. Any character (including a backslash) may be included by prefixing the character to be included with a
backslash. The file may itself contain additional @file options; any such options will be processed recursively.
SEE ALSO readelf(1), and the Info entries for binutils.
COPYRIGHT
Copyright (c) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free
Software Foundation, Inc.
Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or
any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover
Texts. A copy of the license is included in the section entitled "GNU Free Documentation License".
binutils-2.21.1 2011-09-24 ELFEDIT(1)