10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
to get the checksum of a file on unix systems, you can just use the "cksum" command.
i discovered there are some watered down versions of unix systems i have to do some work on. surprisingly, these systems have perl installed on them and awk.
so if the cksum command is not available on a... (1 Reply)
Discussion started by: SkySmart
1 Replies
2. Shell Programming and Scripting
Okay so I'm 13 and my dad set me a challenge of writing a program that check to see if a box is online with input parameter when starting the program so i came back with this.The top commented out bit is what he showed me how to do after i show him my code.
#!/bin/sh
#in=${@}
#tst=`echo... (3 Replies)
Discussion started by: mattylad000
3 Replies
3. Shell Programming and Scripting
Hi I am trying to make my scripts to run from any directory and after some research (googling) I find there are 2 ways to do this
1. export PATH=$PATH:directory
2. create a /bin directory in your home directory and put your scripts there.
Could someone tell me the relative merits of either... (1 Reply)
Discussion started by: piynik
1 Replies
4. UNIX for Dummies Questions & Answers
I am trying to figure out the OS version of my Linux box. I got three commands:
# uname -a
Linux test01 2.6.18-238.el5 #1 SMP Thu Jan 13 15:51:15 EST 2011 x86_64 x86_64 x86_64
# cat /proc/version
Linux version 2.6.18-238.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704... (4 Replies)
Discussion started by: insvf
4 Replies
5. UNIX for Dummies Questions & Answers
How does X windows system launch a program?
Does X give init a command (fork) or does x give BASH a command? Can/does X interact with init directly or does everything go through BASH? :wall:
Thanks in advance! (4 Replies)
Discussion started by: theKbStockpiler
4 Replies
6. Shell Programming and Scripting
Hi!
I really need your help!
I need to operate the columns separate by ',' of a file with this structure
a1,a2,a3
b1,b2,b3,b4,b5
c1,c2
d1,d2,d3
e1
....
and I want the result of this subtractions
a1-a1,a2-a1,a3-a1
b1-b1,b2-b1,b3-b1,b4-b1,b5-b1 (10 Replies)
Discussion started by: geparada88
10 Replies
7. Programming
what are the precautions to be taken care for avoiding zombie process ? (8 Replies)
Discussion started by: Gopi Krishna P
8 Replies
8. UNIX for Dummies Questions & Answers
What are the ways to know about a command? (7 Replies)
Discussion started by: g.ashok
7 Replies
9. UNIX for Dummies Questions & Answers
How many ways are there to open a file in unix?
wha i know is mentioned below
suppose if xx is a filename, then
1) cat xx
2) more xx
3) view xx
4) less xx
I heard there are seven ways to open a file. If so, can anyone tell me all the ways to open a file and correct me the above... (3 Replies)
Discussion started by: venkatesht
3 Replies
10. Tips and Tutorials
A common thing in shell scripting. I came across this script that will be useful for people learning to write script.
#!/usr/bin/ksh
#
# SCRIPT: 12_ways_to_parse.ksh.ksh
#
#
# REV: 1.2.A
#
# PURPOSE: This script shows the different ways of reading
# a file line by line. Again... (0 Replies)
Discussion started by: google
0 Replies
GUESSNET-SCAN(8) System Manager's Manual GUESSNET-SCAN(8)
NAME
guessnet-scan - guess network configuration data by looking at network traffic
SYNOPSIS
guessnet-scan [options] [ethernet_interface]
DESCRIPTION
Guessnet-scan tries to deduce network configuration data by watching network traffic at a given Ethernet interface.
After scanning network traffic for some time, guessnet-scan prints a configuration string suitable for inclusion in /etc/network/inter-
faces.
Note that guessnet-scan uses heuristics and wild guesses and that the resulting data is not guaranteed to be accurate. The program is
intended to be used as a first try at getting network configuration data without bothering anyone.
OPTIONS
Options follow the usual GNU conventions,
--debug
Print debugging messages.
--help Show a brief summary of commandline options.
--init-time=int
Time in seconds to wait for the interface to initialize when it is not found already up at program startup. Default: 3 seconds.
-t, --timeout=int
Time in seconds to watch for network traffic. Default: 5 seconds.
-v, --verbose
Operate verbosely.
--version
Show the version number of the program.
SCANNING REQUIREMENTS
To correctly identify all data of the local network, guessnet-scan needs to see traffic related to a host in the local network and to the
local gateway, if any.
To be able to identify the network gateway, guessnet-scan also needs to see some traffic directed to the external network: you can help the
detection by generating some outbound IP traffic during the scan, for example by browsing a web page (without proxy) or using telnet to
open a connection to some remote host.
Note that if you are connected to a switch, guessnet-scan won't probably be able to work, since the switch will isolate it from the network
traffic that the other machines are generating.
SEE ALSO
guessnet(8), interfaces(5).
AUTHOR
Guessnet-scan was written by Enrico Zini <enrico@debian.org>.
10 October 2004 GUESSNET-SCAN(8)