Sponsored Content
Top Forums Shell Programming and Scripting Perl open(CMD, "cmd |"); buffering problem.. Post 302593595 by methyl on Friday 27th of January 2012 12:51:12 PM
Old 01-27-2012
Quote:
like "tail -f verybusy.log".
Is that actual unix command used in ""/appbin/command " ? If so, what Operating System and version and what Shell is running the command.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

perl "system" cmd return values..

perl 5.6.1: when i try a "system" command(with if loops for $?), i get this: child exited with value 1 what is meant by this $? values and what does it meant if it returns 1?.. (0 Replies)
Discussion started by: sekar sundaram
0 Replies

2. Shell Programming and Scripting

assign shell var output of cmd "wc"

how do I feed output of "wc" to a shell script variable "countBcp"? (2 Replies)
Discussion started by: devy
2 Replies

3. Shell Programming and Scripting

Need help on use of "cmd" command in net::Telnet module in PERL

in "cmd" command i want to copy the ouput of the command excuted to a particular file in a directory. How to do this..?? Ex : $telnet->cmd(String => 'allip:acl=a1;',Prompt => '/</'); i want to copy o/p of the command "allip:acl=a1;" in a log file in a particular directory. Plz suggest.. (1 Reply)
Discussion started by: sudhakaryadav
1 Replies

4. Shell Programming and Scripting

passing the output of cmd from "eval" to a variable

Hello, I need help with the eval command. I have been building a lengthy cmd using eval, and I need to create $var from the output of the cmd. Here is what I have. Out=/dfezz1/output.txt Node="'LPAR Info:'" Gr3p0=" |grep" Printc=" prtconf" Output1=" 1>>$Out 0>&1" Cat1="cat... (8 Replies)
Discussion started by: dfezz1
8 Replies

5. Shell Programming and Scripting

Perl script with "chkconfig --list" cmd

Hi everybody; I try to code a script perl to list all services that are active "ON" with a chkconfig -- list the problem is that code list all services which are active or not. #!/usr/bin/perl use strict; use warnings; open(FILE,"-|") || exec "chkconfig --list |grep ON";... (2 Replies)
Discussion started by: bassma
2 Replies

6. Shell Programming and Scripting

cmd || echo "something" - doesn't exit uppon error

Hi guys, I have a shell script where I have the following: for i in ad0 ad1 do gpart create -s gpt $i || echo "Cannot create GPT partition on "$i". Exiting ..." gpart add -s 128 -t freebsd-boot $i || echo "Cannot add freebsd-boot partition on "$i". Exiting ..." gpart add -s 4G -t... (2 Replies)
Discussion started by: da1
2 Replies

7. UNIX for Dummies Questions & Answers

Help about "file" cmd

file /sbin/ifconfig.net-tools /sbin/ifconfig.net-tools: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, stripped Does someone know what's the "x86-64" how it get this? what's the 2.6.16, how it get this and in some... (5 Replies)
Discussion started by: yanglei_fage
5 Replies

8. Shell Programming and Scripting

Using a single "find" cmd to search for multiple file types and output individual files

Hi All, I am new here but I have a scripting question that I can't seem to figure out with the "find" cmd. What I am trying to do is to only have to run a single find cmd parsing the directories and output the different file types to induvidual files and I have been running into problems.... (3 Replies)
Discussion started by: swaters
3 Replies

9. Shell Programming and Scripting

Cmd="grep 'Name:' |awk -F' ' '{print $2}'"

Hi Is it possible to get the below code working.? cmd="grep 'Name:' |awk -F' ' '{print $2}'|xargs -i basename {}" echo $cmd ( rman target / <<EOF1 LIST COPY ; exit EOF1 ) | `$cmd` in nutshell I want to be able to preset cmd as depending on script flow it can be... (2 Replies)
Discussion started by: zam
2 Replies

10. Shell Programming and Scripting

Expect: spawn id exp5 not open while executing "expect "$" { send "sudo su -\r" }"

Hi All, i am trying to ssh to a remote machine and execute certain command to remote machine through script. i am able to ssh but after its getting hung at the promt and after pressing ctrl +d i am gettin the out put as expect: spawn id exp5 not open while executing "expect "$" {... (3 Replies)
Discussion started by: Siddharth shivh
3 Replies
TRACE-CMD-LISTEN(1)													       TRACE-CMD-LISTEN(1)

NAME
trace-cmd-listen - listen for incoming connection to record tracing. SYNOPSIS
trace-cmd listen -p port [OPTIONS] DESCRIPTION
The trace-cmd(1) listen sets up a port to listen to waiting for connections from other hosts that run trace-cmd-record(1) with the -N option. When a connection is made, and the remote host sends data, it will create a file called trace.HOST:PORT.dat. Where HOST is the name of the remote host, and PORT is the port that the remote host used to connect with. OPTIONS
-p port This option will specify the port to listen to. -D This options causes trace-cmd listen to go into a daemon mode and run in the background. -d dir This option specifies a directory to write the data files into. -o filename This option overrides the default trace in the trace.HOST:PORT.dat that is created when a remote host connects. -l filename This option writes the output messages to a log file instead of standard output. SEE ALSO
trace-cmd(1), trace-cmd-record(1), trace-cmd-report(1), trace-cmd-start(1), trace-cmd-stop(1), trace-cmd-extract(1), trace-cmd-reset(1), trace-cmd-split(1), trace-cmd-list(1) AUTHOR
Written by Steven Rostedt, <rostedt@goodmis.org[1]> RESOURCES
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/trace-cmd.git COPYING
Copyright (C) 2010 Red Hat, Inc. Free use of this software is granted under the terms of the GNU Public License (GPL). NOTES
1. rostedt@goodmis.org mailto:rostedt@goodmis.org 06/11/2014 TRACE-CMD-LISTEN(1)
All times are GMT -4. The time now is 07:58 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy