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Shell Programming and Scripting
How to put a difference calculation in my awk script ?
Post 303037629 by RudiC on Thursday 8th of August 2019 08:18:46 AM
08-08-2019
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file A
E969K
D223L
E400L
E34L
file B
predicted 3
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501 1000
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E400L 251 500
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IL ILLINOIS
OH OHIO
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LEARN ABOUT DEBIAN
dpipe
DPIPE(1) General Commands Manual DPIPE(1) NAME
dpipe - bi-directional pipe command SYNOPSIS
dpipe [ command [ args ] ] = [ command [ args ] ] dpipe [ command [ args ] ] = [ command [ args ] ] [ = [ command [ args ] ] ] ... DESCRIPTION
dpipe is a general tool to run two commands diverting the standard output of the first command into the standard input of the second and vice-versa. It is the bi-directional extension of the | (pipe) syntax used by all the shells. The = has been chosen as a metaphor of two parallel communication lines between the commands. It is also possible to concatenate several tools. Intermediate programs communicate using standard input and standard output with the preceding tool and alternate standard input and output (respectively file descriptors number 3 and 4) towards the following tool. If an intermediate tool should process only the data flowing in one direction use { or } as suffix for the preceding = and prefix of the following one. This tool has been written as a tool for the Virtual Distributed Ethernet. EXAMPLE
dpipe a = b processes a and b are bidirectionally connected: stdin of a is connected to stdout of b and vice-versa dpipe a = b = c a and b are connected as above. Alternate stdin of b is connected to stdout of c and alternate stdout of b to stdin of c dpipe a =} b }= c This is a cycle of pipes: stdout of a is connected to stdin of b, stdout of b with stdin of c, and stdout of c to stdin of a dpipe a =} b }={ c {= d = e all the notations can be mixed together. this is a -> b -> d -> c and back to a; alternate ports of d are connected to e OPTIONS
no options. NOTICE
Virtual Distributed Ethernet is not related in any way with www.vde.com ("Verband der Elektrotechnik, Elektronik und Informationstechnik" i.e. the German "Association for Electrical, Electronic & Information Technologies"). SEE ALSO
vde_switch(1), vde_plug(1), vde_plug2tap(1), vdeq(1). wirefilter(1). AUTHOR
VDE is a project by Renzo Davoli <renzo@cs.unibo.it>. Virtual Distributed Ethernet December 6, 2006 DPIPE(1)