Sponsored Content
Top Forums Shell Programming and Scripting Need help on understanding the Shell and AWK scripts Post 302264419 by phpfreak on Thursday 4th of December 2008 01:02:33 AM
Old 12-04-2008
There are many programs available that will display script flow in a gui flow chart. I remember using one a long while back but I can't remember the name but it's similar to 'Visustin'. You might find others elsewhere. Once you breakdown the flow, then you will need to read as many awk tutorials you can find on the net because the learning curve is like '|' if you catch my drift.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Understanding System Vish startup scripts

I'm trying to get a clear picture of how startup scripts are executed during bootup. When run-level N is entered, the scripts in /rcN.d are executed. I understand that the S* scripts are executed in numerical order during bootup. What I don't understand is if the K* scripts are executed... (0 Replies)
Discussion started by: darkmatter14B
0 Replies

2. Shell Programming and Scripting

How to pass values between awk and shell scripts

I know that we can call system command to execute shell script in awk. but it does not return the result of the command executed , but only returns the value of the command executoin status ( 1/0 --> failure / success). Could anyone let me know how to solve this problem. (9 Replies)
Discussion started by: rajnikanth.1912
9 Replies

3. Shell Programming and Scripting

Understanding Awk and Cat

Hi Guys, I was recently come across some code to hopefully learn a little bit about putting Shell commands into PHP application to run on a Linux server. However, I don't understand the command AT ALL... and was wondering if anyone can interpret it: cat userIDs.dat | awk '{s=s+1; if... (1 Reply)
Discussion started by: jordRiot
1 Replies

4. Shell Programming and Scripting

Need a better understanding of shell scripts

Need a better understanding of shell scripts (14 Replies)
Discussion started by: sureshkumar4737
14 Replies

5. UNIX for Advanced & Expert Users

understanding awk in this script

i am analyzing a query written by another developer ,need to understand part of script am looking at a code ..and it converts comma files to pipe delimited and also takes away quotes from any columns, source field format: 2510,"Debbie",NewYork changes to target: 2510|Debbie|NewYork ... (1 Reply)
Discussion started by: coolrock
1 Replies

6. IP Networking

Help understanding iproute2 and tc scripts

Hi all, I am new to linux routing and would like to keep a possible running dialog about some scripts I have been studying and what the different parts of them mean. We are using Openwrt backfire along with openvpn and Swyx as VoIP. My goal is to eventually implement some QoS using dsmark, but... (1 Reply)
Discussion started by: shodg001
1 Replies

7. UNIX for Dummies Questions & Answers

Understanding awk

I found this on an awk site and would like to know what it does: /CARS/{x="";next} {if(x)print x;x=$0} END{if(x)print x}' Does it mean if it finds the word cars it skips that line and then prints the next one? (4 Replies)
Discussion started by: newbie2010
4 Replies

8. Shell Programming and Scripting

awk : Need Help in Understanding a command

Hello I am working on a Change request and Stuck at a point. The below awk command is used in the function. float_test ( ) { echo | awk 'END { exit ( !( '"$1"')); }' } I understand that awk 'END' is used to add one line at the end and exit is used to end the script with an error... (4 Replies)
Discussion started by: rahul2662
4 Replies

9. Shell Programming and Scripting

Understanding awk 'expansion'

Heyas Recently i wanted to help someone with an awk script, but the end-script didnt work as expected. He wanted, if HOME was empty, to get the HOME of the current USER from /etc/passwd. At first i tried hardcoded with root: awk -F: '/^root/ {print $6}' /etc/passwd As that worked, i've... (4 Replies)
Discussion started by: sea
4 Replies

10. UNIX for Beginners Questions & Answers

Understanding the difference between individual BASH login scripts

Hello... and thanks in advance for reading this or offering me any assistance I'm trying to understand specific differences between the various login scripts... I understand the differences between interactive vs non-interactive and login vs non-login shells... and that's not where my question... (4 Replies)
Discussion started by: bodisha
4 Replies
flow-merge(1)						      General Commands Manual						     flow-merge(1)

NAME
flow-merge -- Merge flow files. SYNOPSIS
flow-merge [-aghm] [-b big|little] [-C comment] [-d debug_level] [-o filename] [-z z_level] [file|directory ...] DESCRIPTION
The flow-merge utility processes files and/or directories of files in the flow-tools format. The resulting merged data set is written to the standard output or file specified by -o. If file is a single dash (`-') or absent, flow-merge will read from the standard input. Unlike flow-cat, flow-merge interleaves flow records preserving the relative chronological order. OPTIONS
-a Do not ignore filenames that begin with tmp. -b big|little Byte order of output. -C Comment Add a comment. -d debug_level Enable debugging. -g Sort file list by capture start time before processing. -h Display help. -m Disable the use of mmap(). -p Preload headers. Use to preserve meta information such as lost flows. -o file Write to file instead of the standard out. -z z_level Configure compression level to z_level. 0 is disabled (no compression), 9 is highest compression. file|directory... Process the files and/or directory. EXAMPLES
Merge all flow files begining with ft-v05.2001-05.01, use flow-print to display the results. flow-merge ft-v05.2001-05-01.* | flow-print BUGS
None known. AUTHOR
Larry Lidz ellidz@eridu.uchicago.edu SEE ALSO
flow-tools(1) flow-merge(1)
All times are GMT -4. The time now is 07:53 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy