05-30-2007
Variable not working correctly
On my unix box everytime I use the underbar character "_" I run into trouble
when using it to concatenate two names. The OS reads in the underbar and
looks to the next character, handling it differently.
On one of your replies, someone demonstrated correctly that when you
concatenate, keep the other names plus the underbar character all within
double quotes. That way, the OS will treat the underbar as a literal character instead of (probably) a meta-character.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
I have a simple script that I want to run every 30 minutes but only when I execute it. I don't want it to be a crontab job.
so i have for example
date
ls -l
who
sleep 1800
The first time it executes correctly but after the first time it nevers execute back again. It should execute after... (2 Replies)
Discussion started by: elchalateco
2 Replies
2. Shell Programming and Scripting
Anyone have an idea why this if statement does not work correctly?
"test2.sh" 18 lines, 386 characters
#!/usr/bin/sh
WARNING=80
CRITICAL=95
check_it()
{
if ] || ];then
echo "YES ] || ]"
else
echo "NO ] || ]"
fi
}
check_it 80.1
check_it 81.1 (3 Replies)
Discussion started by: 2dumb
3 Replies
3. Programming
//save in/out
int tmpin = dup(0);
int tmpout = dup(1);
//set initial input
int fdin;
if(_inputFile)
{
fdin = open(_inputFile, O_RDONLY | O_CREAT, S_IREAD | S_IWRITE);
}
else
{
//use default input
fdin = dup(tmpin);
}
int ret;
int fdout;
for(int i = 0; i... (14 Replies)
Discussion started by: AirBronto
14 Replies
4. UNIX for Dummies Questions & Answers
egrep -A 7 -m 2 -h 'Date:|Time:' *.html
this is showing only 2 line after the context of the 2nd found match. Is this a bug in grep?
egrep -A 7 -m 2 -h 'Time:' *.html - this works correctly (2 Replies)
Discussion started by: zer0
2 Replies
5. Shell Programming and Scripting
I am trying to copy 2 types of files so I can archive them. I tested with a set of commands:
touch -t $(date -d "-60 day" +%Y%m%d) WORKDIR/REF
find TARGETDIR/ -type f -maxdepth 1 -iname \*.out\* -or -iname \*.log\* ! -newer WORKDIR/REF -exec ls -l {} \;
This correctly lists any files in the... (2 Replies)
Discussion started by: prismtx
2 Replies
6. Shell Programming and Scripting
We are using Red Hat linux system.
I am transferring my rman backup files to another server.
Here is the command i am using to transfer the files.
/usr/bin/rsync -avpP --delete /xyz/xyz/ 99.99.999.99::db110bkp
Here is the rsync version.
>rsync --version
rsync version 3.0.6 ... (1 Reply)
Discussion started by: govindts
1 Replies
7. UNIX for Dummies Questions & Answers
Consider the following code:
grep -o -e '^STEAM_::\d+$' workfile3.tmp
A sample format of a valid string for the regexp would be:
STEAM_0:1:12345678
Here is an example line from the workfile3.tmp file:
465:L 01/02/2012 - 00:05:33: "Spartan1-1-7<8><STEAM_0:1:47539638><>" connected
No... (2 Replies)
Discussion started by: spinner0205
2 Replies
8. Shell Programming and Scripting
Hi
I am attempting to right a script which will read a table and extract specfic information.
LASTFAILEDJOB=/usr/openv/netbackup/scripts/GB-LDN/Junaid/temp_files/lastfailedjob
cat /usr/openv/netbackup/scripts/GB-LDN/Junaid/temp_files/lastfailedjob
237308646
If i run the following... (5 Replies)
Discussion started by: Junes
5 Replies
9. UNIX for Dummies Questions & Answers
Hello All,
Yesterday, all day, I was using x11vnc and vncviewer to connect to a server. But today for some reason it is not working. I don't
remember changing any settings or anything like that, but because it stopped working correctly I guess something has...?
I'm issuing the exact same... (0 Replies)
Discussion started by: mrm5102
0 Replies
10. UNIX for Beginners Questions & Answers
Today I saw the topic. sum-even-numbers-1-100 At that time, it was already closed but not the point. Other thoughts came to mind.
All newcomers to Haskell are afraid that when they study it, their brains will turn inside out. I did not notice anything like that. And all because the brains of all... (4 Replies)
Discussion started by: nezabudka
4 Replies
LEARN ABOUT DEBIAN
get-iab
GET-IAB(1) General Commands Manual GET-IAB(1)
NAME
get-iab - Fetch the arp-scan IAB file from the IEEE website
SYNOPSIS
get-iab [options]
DESCRIPTION
get-iab fetches the Ethernet IAB file from the IEEE website, and saves it in the format used by arp-scan.
The IAB file contains all of the IABs (Individual Address Blocks) that have been registered with IEEE. Each IAB entry in the file speci-
fies the first 36-bits of the 48-bit Ethernet hardware address, leaving the remaining 12-bits for use by the registering organisation. For
example the IAB entry "0050C2003", registered to Microsoft, applies to any Ethernet hardware address from 00:50:c2:00:30:00 to
00:50:c2:00:3f:ff inclusive. Each IAB assignment represents a total of 2^12 (4,096) Ethernet addresses.
Major Ethernet hardware vendors typically use an OUI registration rather than an IAB registration. See get-oui(1) for details.
This script can be used to update the arp-scan IAB file from the latest data on the IEEE website. It is relatively rare to see Ethernet
addresses from IAB registrations, so the IAB file is not as important as the OUI file.
The IAB data is fetched from the URL http://standards.ieee.org/regauth/oui/iab.txt and the output file is saved to the file ieee-iab.txt in
the current directory. The URL to fetch the data from can be changed with the -u option, and the output file name can be changed with the
-f option.
The ieee-iab.txt file that is produced by this script is used by arp-scan to determine the Ethernet card vendor from its hardware address.
The directory that arp-scan will look for the ieee-iab.txt file depends on the options used when it was built. If it was built using the
default options, then it will look in /usr/local/share/arp-scan.
OPTIONS
-h Display a brief usage message and exit.
-f <fn>
Write the output to the specified file instead of the default ieee-iab.txt.
-u <URL>
Use the specified URL to fetch the raw IAB data from instead of the default http://standards.ieee.org/regauth/oui/iab.txt
-v Display verbose progress messages.
FILES
ieee-iab.txt
The default output file.
EXAMPLES
$ get-iab -v
Renaming ieee-iab.txt to ieee-iab.txt.bak
Fetching IAB data from http://standards.ieee.org/regauth/oui/iab.txt
Fetched 230786 bytes
Opening output file ieee-iab.txt
1535 IAB entries written to file ieee-iab.txt
NOTES
get-iab is implemented in Perl, so you need to have the Perl interpreter installed on your system to use it.
get-iab uses the LWP::Simple Perl module to fetch the data from the IEEE website. You must have this module installed on your system for it
to work. This module is available on most distributions, often called libwww-perl. It is also available in source form from CPAN.
You can use a proxy server by defining the http_proxy environment variable.
AUTHOR
Roy Hills <Roy.Hills@nta-monitor.com>
SEE ALSO
arp-scan(1)
get-oui(1)
arp-fingerprint(1)
http://www.nta-monitor.com/wiki/ The arp-scan wiki page.
March 30, 2007 GET-IAB(1)