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Full Discussion: reverse a string based on else
Top Forums Shell Programming and Scripting reverse a string based on else Post 302328573 by dcfargo on Wednesday 24th of June 2009 04:14:34 PM
Old 06-24-2009
reverse a string based on else
I have a file like this:

Dog Cat One ABCDEFGHIJ house
Dog Cat Two ABCDEFGHIJ house
Cat Cat One ABCDEFGHIJ house
Cat Cat Two ABCDEFGHIJ house


I want to look at $3 and if it says "Two" print out the line except reverse $4.

Dog Cat One ABCDEFGHIJ house
Dog Cat Two JIHGFEDCBA house
Cat Cat One ABCDEFGHIJ house
Cat Cat Two JIHGFEDCBA house


I was trying to just use a substring 'for loop'


awk '{

if ($3 == "One") print $1, $2, $3, $4, $5;
else if ($3 == "Two") print $1, $2, $3, for(i=length($4);i>=1;i--)
print substr($4,i,1), $5

}' infile > outfile &

This isn't working and obviously I'm lost.

Any help would be fantastic.
 

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LEARN ABOUT DEBIAN

br

br(1)							      General Commands Manual							     br(1)

NAME

       br - utility to interact with Firecracker device

SYNOPSIS

       br [options] [housecode[list]] [native command] ...

DESCRIPTION

       This  manual  page  documents  briefly  the  br command.  br is a program that interacts with X10's Firecracker device allowing the user to
       manipulate X10 devices throughout their house/office.

OPTIONS

       The programs follow the usual GNU command line syntax, with long options starting with two dashes (`-').  A summary of options are included
       below.

       -h, --help
	      Show summary of options.

       -v, --verbose
	      Each -v will increase the verbosity.

       -x, --port=PORT
	      Set port to communicate with (should be the port the Firecracker module is plugged into)

       -c, --house=[A-P]
	      Use alternate house code for operations, default is A

       -n, --on=LIST
	      Turn on all devices in LIST

       -f, --off=LIST
	      Turn off all devices in LIST

       -N, --ON
	      Turn on all devices in housecode

       -F, --OFF
	      Turn off all devices in housecode

       -d, --dim=LEVEL[,LIST]
	      Dim devices in housecode [or LIST] to relative LEVEL

       -B, --lamps_on
	      Turn on all lamps in housecode

       -D, --lamps_off
	      Turn off all lamps in housecode

       -r, --repeat=NUM
	      Repeat commands NUM times (0 = ~forever)

AUTHOR

       This manual page was written by Ashley Clark <aclark@debian.org>, for the Debian GNU/Linux system (but may be used by others).

								   Ashley Clark 							     br(1)
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