Grep and substitute? Post: 302909731

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Top Forums Shell Programming and Scripting Grep and substitute? Post 302909731 by Corona688 on Friday 18th of July 2014 04:05:53 PM

07-18-2014

Registered User

When the question is "grep and", awk is usually the answer. It has a language statement especially built for 'if this line matches this regex, do x'.

This program checks what fields belong where depending on the header in the file you give it, and the header you give it in OUT=. This lets you use the exact same program on either format.

Code:

$ awk '(NR==1) { for(N=1; N<=NF; N++){ F[$N]=N ; F[N]=$N } ; next }
{ for(N=1; N<=NF; N++) D[F[N]]=$N ; next }
END {
        print OUT;
        split(OUT, OF);
        for(N=1; N in OF; N++) 
                if(OF[N] in D) $N=D[OF[N]] else $N="NA";
	print;
}' FS="," OFS="," OUT="CSVHeaderAttr:PUIS,IdleImmediate,IdleImmediateSupported,IdleImmediateEnabled,POH,Temp,WorstTemp" oldformat

CSVHeaderAttr:PUIS,IdleImmediate,IdleImmediateSupported,IdleImmediateEnabled,POH,Temp,WorstTemp
    CSVValuesAttr:NO,NO,NA,NA,9814,31,56

$ awk '(NR==1) { for(N=1; N<=NF; N++){ F[$N]=N ; F[N]=$N } ; next }
{ for(N=1; N<=NF; N++) D[F[N]]=$N ; next }
END {
        print OUT;
        split(OUT, OF);
        for(N=1; N in OF; N++)
        {
                $N="NA";
                if(OF[N] in D) $N=D[OF[N]];
        }
print;
}' FS="," OFS="," OUT="CSVHeaderAttr:PUIS,IdleImmediate,IdleImmediateSupported,IdleImmediateEnabled,POH,Temp,WorstTemp" newformat

CSVHeaderAttr:PUIS,IdleImmediate,IdleImmediateSupported,IdleImmediateEnabled,POH,Temp,WorstTemp
    CSVValuesAttr:NO,NA,YES,YES,23861,31,51

$

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LEARN ABOUT DEBIAN

suspend

suspend(1)                                                         User Commands                                                        suspend(1)

NAME

       suspend - shell built-in function to halt the current shell

SYNOPSIS

   sh
       suspend

   csh
       suspend

   ksh
       suspend

DESCRIPTION

   sh
       Stops the execution of the current shell (but not if it is the login shell).

   csh
       Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.

   ksh
       Stops the execution of the current shell (but not if it is the login shell).

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)

SunOS 5.10                                                          15 Apr 1994                                                         suspend(1)

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