06-21-2015
None of your examples match your sample data.
You don't have a field named CITY; you have a field named CITY followed by eight spaces. If you try to look for a value in the CITY field, it should fail because there is no CItY field.
With a comma separated data file, you don't have a city name of CHICAGO; you have a city name of CHICAGO followed by three spaces, and you don't have a city name of NEWARK; you have a city name of NEWARK followed by four spaces.
And, if someone entered the keys, CHICAGO followed by three spaces and STATE they should get IL followed by 7 spaces; not just IL.
And, if you have columns in the order CITY,STATE,COUNTY,STATE (which you said is possible) and the user gives keys NEW_YORK and STATE are you supposed to return the value in column 2, column 4, or both???
How are the keys supplied to your script?
What operating system and shell are you using?
What have you tried so far?
Is this a homework assignment?
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LEARN ABOUT DEBIAN
ppmtosixel
ppmtosixel(1) General Commands Manual ppmtosixel(1)
NAME
ppmtosixel - convert a portable pixmap into DEC sixel format
SYNOPSIS
ppmtosixel [-raw] [-margin] [ppmfile]
DESCRIPTION
Reads a portable pixmap as input. Produces sixel commands (SIX) as output. The output is formatted for color printing, e.g. for a DEC
LJ250 color inkjet printer.
If RGB values from the PPM file do not have maxval=100, the RGB values are rescaled. A printer control header and a color assignment table
begin the SIX file. Image data is written in a compressed format by default. A printer control footer ends the image file.
OPTIONS
-raw If specified, each pixel will be explicitly described in the image file. If -raw is not specified, output will default to com-
pressed format in which identical adjacent pixels are replaced by "repeat pixel" commands. A raw file is often an order of magni-
tude larger than a compressed file and prints much slower.
-margin
If -margin is not specified, the image will be start at the left margin (of the window, paper, or whatever). If -margin is speci-
fied, a 1.5 inch left margin will offset the image.
PRINTING
Generally, sixel files must reach the printer unfiltered. Use the lpr -x option or cat filename > /dev/tty0?.
BUGS
Upon rescaling, truncation of the least significant bits of RGB values may result in poor color conversion. If the original PPM maxval was
greater than 100, rescaling also reduces the image depth. While the actual RGB values from the ppm file are more or less retained, the
color palette of the LJ250 may not match the colors on your screen. This seems to be a printer limitation.
SEE ALSO
ppm(5)
AUTHOR
Copyright (C) 1991 by Rick Vinci.
26 April 1991 ppmtosixel(1)