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Top Forums Shell Programming and Scripting How to convert a string into double in UNIX Post 302620329 by kalidass on Monday 9th of April 2012 12:37:30 AM
Old 04-09-2012
Thanks dude Smilie

---------- Post updated 04-09-12 at 10:07 AM ---------- Previous update was 04-08-12 at 10:27 AM ----------

One more problem. (Note: I dont have ksh93, working on ksh88)


Code:
%cat infile
1333553619.647
1333553620.859
1333553622.246
1333553623.470
1333553624.993
1333553627.028
1333553628.925
1333553629.531
1333553630.663
1333553630.684

I need to find out the difference of even and odd values. Say Value 2 - Value 1, Value 4 - Value 3, ... Value n - Value (n-1).

I have tried to check whether the code given by radoulov works for values 4 and 3 using
Code:
%sed 'N; s/\(.*\)\n\(.*\)/\4 - \3/' infile | bc



But it gave the error,
Code:
sed: Function N; s/\(.*\)\n\(.*\)/\4 - \3/ cannot be parsed.


I'm a newbie to UNIX. Pl help.

Last edited by Scrutinizer; 04-09-2012 at 04:16 AM.. Reason: some extra code tags
 

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VCONSOLE.CONF(5)                                                   vconsole.conf                                                  VCONSOLE.CONF(5)

NAME
vconsole.conf - configuration file for the virtual console SYNOPSIS
/etc/vconsole.conf DESCRIPTION
The /etc/vconsole.conf file configures the virtual console, i.e. keyboard mapping and console font. The basic file format of the vconsole.conf is a newline-separated list environment-like shell-compatible variable assignments. It is possible to source the configuration from shell scripts, however, beyond mere variable assignments no shell features are supported, allowing applications to read the file without implementing a shell compatible execution engine. Note that the kernel command line options vconsole.keymap=, vconsole.keymap.toggle=, vconsole.font=, vconsole.font.map=, vconsole.font.unimap= may be used to override the console settings at boot. Depending on the operating system other configuration files might be checked for configuration of the virtual console as well, however only as fallback. OPTIONS
The following options are understood: KEYMAP=, KEYMAP_TOGGLE= Configures the key mapping table of for they keyboard. KEYMAP= defaults to us if not set. The KEYMAP_TOGGLE= can be used to configured a second toggle keymap and is by default unset. FONT=, FONT_MAP=, FONT_UNIMAP= Configures the console font, the console map and the unicode font map. FONT= defaults to latarcyrheb-sun16. EXAMPLE
Example 1. German keyboard and console /etc/vconsole.conf: KEYMAP=de-latin1 FONT=latarcyrheb-sun16 SEE ALSO
systemd(1), loadkeys(1), setfont(8), locale.conf(5) AUTHOR
Lennart Poettering <lennart@poettering.net> Developer systemd 10/07/2013 VCONSOLE.CONF(5)
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