10-07-2010
Thank you both Danmero and rdcwayx!
I want to make this a learning experience so please be patient with me!
rdcwayx's gives what I am looking for! danmero's approach makes everything positive (but is actually doing the difference just fine, only that it makes it positive) ....somehow I have no clue what is happening in this command! I have some idea what is happening in rdcwayx's command! Thank you again!! I am surely learning shell scripting here, I actually doubted this was possible with awk!!!
daanmero please can I ask a favour that you just explain what the different symbols actually mean and how that combination achieves the result? and is it possible to modify the command so that it preserves the negative in the results? and any advice where I can find a detailed user guide for awk that?
Thank you all!
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I m stuck with a issue.
I need to calculate the time difference between two files.. one on the local machine and one on the remote machine using a script.
Can any one suggest the way this can be achevied
Thanks,
manohar (1 Reply)
Discussion started by: meetmano143
1 Replies
2. UNIX for Dummies Questions & Answers
Hi everyone,
i have files containing lines of number:
109
107
67
62
..
..
i want to calculate the difference between numbers in lines 1 and 2, 3 and 4, 5 and 6 and so on. would someone help me please?. Thanks (12 Replies)
Discussion started by: ahidayat
12 Replies
3. UNIX for Dummies Questions & Answers
hiii, Help me out..i have a huge set of data stored in a file.This file has has 2 columns which is latitude & longitude of a region. Now i have a program which asks for the number of points & based on this number it asks the user to enter that latitude & longitude values which are in the same... (7 Replies)
Discussion started by: reva
7 Replies
4. Shell Programming and Scripting
Hello,
I'm trying to create a shell script (#!/bin/sh) which should tell me the age of a file in minutes...
I have a process, which delivers me all 15 minutes a new file and I want to have a monitoring script, which sends me an email, if the present file is older than 20 minutes.
To do... (10 Replies)
Discussion started by: worm
10 Replies
5. Shell Programming and Scripting
Hello
I have a file in following format:
IV 08:09:07
NM 08:12:01
IC 08:12:00
MN 08:14:20
NM 08:14:15
I need a script to compare time on each line with previous line and show the inconsecutive line. Ex.:
08:12:00
08:14:15
A better way... (6 Replies)
Discussion started by: vilibit
6 Replies
6. Shell Programming and Scripting
Hi everyone, just some simple question...
i've been using a awk script to calculate my data...
i have 3 files:
file a1.txt:
2
3
4
5
3
4
file a2.txt:
4
5
6
7
8 (1 Reply)
Discussion started by: yat
1 Replies
7. Shell Programming and Scripting
I would like to compare the values of 2nd column of consecutive lines of same file in such a way so that if the difference between first value and second value is more than 100 it should print complete line else ignore line.
Input File
==========
PDB 2500
RTDB 123
RTDB-EAGLE 122
VSCCP 2565... (4 Replies)
Discussion started by: manuswami
4 Replies
8. Shell Programming and Scripting
Hello Expert,
I need to transpose Date-Timestamp based on same column values and calculate time difference. The input file would be as below and required output is mentioned in the bottom
INPUT File
========
08/23/2012 12:36:09 JOB_5340
08/23/2012 12:36:14 JOB_5340
08/23/2012... (2 Replies)
Discussion started by: asnandhakumar
2 Replies
9. Shell Programming and Scripting
Hi Friends,
Require a quick help to write the difference between 2 timestamps based on a unique column value:
Input file:
08/23/2012 12:36:09,JOB_5340,08/23/2012 12:36:14,JOB_5340
08/23/2012 12:36:22,JOB_5350,08/23/2012 12:36:26,JOB_5350
08/23/2012 13:08:51,JOB_5360,08/23/2012... (4 Replies)
Discussion started by: asnandhakumar
4 Replies
10. Shell Programming and Scripting
I have a text file that shows the output of my solar inverters. I want to separate this into sections. overview , device 1 , device 2 , device 3. Each device has different number of lines. but they all have unique starting points. Overview starts with 6 #'s, Devices have 4#'s and their data starts... (6 Replies)
Discussion started by: Mikey
6 Replies
LEARN ABOUT FREEBSD
atf-sh
ATF-SH(1) BSD General Commands Manual ATF-SH(1)
NAME
atf-sh [-s shell] -- interpreter for shell-based test programs
SYNOPSIS
atf-sh script
DESCRIPTION
atf-sh is an interpreter that runs the test program given in script after loading the atf-sh(3) library.
atf-sh is not a real interpreter though: it is just a wrapper around the system-wide shell defined by ATF_SHELL. atf-sh executes the inter-
preter, loads the atf-sh(3) library and then runs the script. You must consider atf-sh to be a POSIX shell by default and thus should not
use any non-standard extensions.
The following options are available:
-s shell Specifies the shell to use instead of the value provided by ATF_SHELL.
ENVIRONMENT
ATF_LIBEXECDIR Overrides the builtin directory where atf-sh is located. Should not be overridden other than for testing purposes.
ATF_PKGDATADIR Overrides the builtin directory where libatf-sh.subr is located. Should not be overridden other than for testing purposes.
ATF_SHELL Path to the system shell to be used in the generated scripts. Scripts must not rely on this variable being set to select a
specific interpreter.
EXAMPLES
Scripts using atf-sh(3) should start with:
#! /usr/bin/env atf-sh
Alternatively, if you want to explicitly choose a shell interpreter, you cannot rely on env(1) to find atf-sh. Instead, you have to hardcode
the path to atf-sh in the script and then use the -s option afterwards as a single parameter:
#! /path/to/bin/atf-sh -s/bin/bash
ENVIRONMENT
ATF_SHELL Path to the system shell to be used in the generated scripts.
SEE ALSO
atf-sh(3)
BSD
September 27, 2014 BSD