Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: printing a line of a file
Top Forums UNIX for Dummies Questions & Answers printing a line of a file Post 564 by Neo on Thursday 14th of December 2000 09:41:32 PM
Old 12-14-2000
Yes, you are right. You run the netstat command and match the output to the IP address you are trying to match in a condition statement. When it matches, you can either pass the matching IP address to another executable script to read the .txt file and do what you want, or read the .txt file from the first script and match.

I would do it all in one script, if not too complex, and execute the script from the crontab file every couple of minutes. You will need a flag and a timer to insure that you do not get multiple hits on an IP address, because the address will linger in netstat longer than the interval between crontab executions.

I would write this in PERL, because PERL is better suited for this that SH, KSH, and these type shells.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

printing an empty line in a file (perl)

I know this must be really easy, but i can't get it to work I've got a perl script, with a file. I want to print an empty line, and the following doesn't seem to work: print nameoffile "\n" thanks for your help!! (3 Replies)
Discussion started by: kfad
3 Replies

2. UNIX for Dummies Questions & Answers

Printing a Line from a file

I have a log file with several lines as follows: Aug 30 06:35:08 trnwvltfit1 /usr/lib/snmp/snmpdx: Agent snmpd appeared dead but responded to ping I am using the date of the line to determine which lines to print. However, I am only trying to print the parts of the line that are NOT... (4 Replies)
Discussion started by: Nysif Steve
4 Replies

3. Shell Programming and Scripting

Re-write first line of a file before printing

Morning All, Quite a simple one this, I hope. What I want to do is to re-write the first line of a file before it's sent to print. The line will be blank initially, and I want to insert some text. The operation can either be done on the file itself (modifying the file on disk), OR in a... (2 Replies)
Discussion started by: alexop
2 Replies

4. UNIX for Advanced & Expert Users

printing specific line from a file.

The below line gives the perfect output when I mention the record number and file name as hardcoded. awk 'NR==3{print}' samp2.txt But when I pass the record num and file name as variable, it doesn't give any output. row_num=3;file2=samp2.txt;awk 'NR==$row_num {print}' $file2 Can you... (2 Replies)
Discussion started by: siba.s.nayak
2 Replies

5. Shell Programming and Scripting

printing each line in a file X times

This is probably simple but I would like to print every line in a file 5 times like this: awk 'NR' mens_csv.tab Dub Tank 53%Hemp/42%Cotton/5%Lycra Jersey Dark Green 0 $22.50 Dub Tank 53%Hemp/42%Cotton/5%Lycra Jersey Indigo Blue 0 $22.50 --------------- Dub... (4 Replies)
Discussion started by: Autumn Tree
4 Replies

6. Shell Programming and Scripting

Printing a particular line to a file

Hi, I have a file in which the entries are of the following type: 5649 S 1 0412 S 0 0423 S 1 0020 N 0 0020 N 0 1022 S 1 1022 S 1 I need to print the whole line which is having 0 in the third column into a different file Thanks... (6 Replies)
Discussion started by: swasid
6 Replies

7. UNIX and Linux Applications

Printing a line in a file

Hi I have a file having multiple lines. I want to print a particular line. How can I do this? Thanks in advance Ananth (5 Replies)
Discussion started by: Ananthdoss
5 Replies

8. Homework & Coursework Questions

Lex: analyzing a C file and printing out identifiers and line numbers they're found on

Florida State University, Tallahassee, FL USA, Dr. Whalley, COP4342 1. The problem statement, all variables and given/known data: Create a lex specification file that reads a C source program that ignores keywords and collects all identifiers (regular variable names) and also displays the line... (3 Replies)
Discussion started by: D2K
3 Replies

9. Shell Programming and Scripting

Awk: Comparing arguments with in line values of file and printing the result

I need to develop a script where I will take two date arguments as parameter date1 and date2 which will in format YYYYMM. Below is the input file say sample.txt. sample.txt will have certain blocks starting with P1. Each block will have a value 118,1:TIMESTAMP. I need to compare the... (7 Replies)
Discussion started by: garvit184
7 Replies

10. Shell Programming and Scripting

Printing string from last field of the nth line of file to start (or end) of each line (awk I think)

My file (the output of an experiment) starts off looking like this, _____________________________________________________________ Subjects incorporated to date: 001 Data file started on machine PKSHS260-05CP ********************************************************************** Subject 1,... (9 Replies)
Discussion started by: samonl
9 Replies

LEARN ABOUT DEBIAN

wicd-wired-settings.conf

WICD-WIRED-SETTINGS.CONF(5)					File Formats Manual				       WICD-WIRED-SETTINGS.CONF(5)

NAME

       wicd-wired-settings.conf - controls Wicd's wired network settings

DESCRIPTION

       This file contains configuration information for wired interfaces in Wicd.
       This file is located at /etc/wicd/wired-settings.conf

SETTINGS

       default = <0|1>
	      This option decides whether to use this profile as the default.  0 = do not use this profile as default.
	      1 = use this profile as default.

       beforescript = <None|arbitrary_script>
	      This  defines  a	script to run before Wicd brings up the connection.  The script should be a Bourne-compatible script and should be
	      executable.
	      IMPORTANT - scripts should ONLY be writable by root and located in a directory that is only writable by root.

       afterscript = <None|arbitrary_script>
	      This defines a script to run after Wicd brings up the connection.  The script should be a Bourne-compatible  script  and	should	be
	      executable.
	      IMPORTANT - scripts should ONLY be writable by root and located in a directory that is only writable by root.

       predisconnectscript = <None|arbitrary_script>
	      This  defines  a script to run before Wicd disconnects the interface.  The script should be a Bourne-compatible script and should be
	      executable.

       postdisconnectscript = <None|arbitrary_script>
	      This defines a script to run after Wicd disconnects the interface.  The script should be a Bourne-compatible script  and	should	be
	      executable.
	      IMPORTANT - scripts should ONLY be writable by root and located in a directory that is only writable by root.

       ip = <None|ip_address>
	      Use this option if you have a static ip address for your system.

       netmask = <None|networkmask>
	      This setting is only appropriate if a static ip address is configured above.

       broadcast = <None|broadcast_address>
	      This setting is only appropriate if a static ip address is configured above.

       gateway = <None|gateway_address>
	      This setting is only appropriate if a static ip address is configured above.

       use_static_dns = <True|False>
	      True = use static DNS servers instead of accepting what the dhcp server supplies.

       use_global_dns = <True|False>
	      True  =  use the global DNS servers provided in wicd-manager-settings.conf(5).  This option is only appropriate if "use_static_dns =
	      True"

       dns1 = <None|ip_address>
	      Static DNS address if "use_static_dns = True" and "use_global_dns = False"

       dns2 = <None|ip_address>
	      Static DNS address if "use_static_dns = True" and "use_global_dns = False"

       dns3 = <None|ip_address>
	      Static DNS address if "use_static_dns = True" and "use_global_dns = False"

SEE ALSO

       wicd(8), wicd-curses(8), wicd-manager-settings.conf(5), wicd-wireless-settings.conf(5).

								   wicd-1.7.2.4 				       WICD-WIRED-SETTINGS.CONF(5)
All times are GMT -4. The time now is 08:26 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy