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Full Discussion: Variable in AWK command help
Top Forums Shell Programming and Scripting Variable in AWK command help Post 302633895 by Corona688 on Wednesday 2nd of May 2012 03:54:24 PM
Old 05-02-2012
You're setting the variable correctly but not doing anything with it. I don't know what you want to do with the variable, and you didn't say. And actually, I don't think you need awk at all here anyway...

That's a useless use of cat, too, several of them. UNIX commands are quite capable of reading files all by themselves, you don't need to spoon-feed them with cat. Even things like read, which don't take filenames, can have files simply redirected into them with <.

You've got the right idea by using 'while read', and can take that even further. The special IFS variable will cause read to split on whatever character you want.

Your syntax for while wasn't quite right.

Also, you can use ~/ as short-form for $HOME.

Code:
delim=`head -1 ~/tmp/interchange_hold | cut -b4`

while IFS="$delim" read TOKEN1 TOKEN2 TOKEN3
do
        echo "Token 1 is $TOKEN1"
        echo "Token 2 is $TOKEN2"
        echo "Token 3 is $TOKEN3"
done < ~/tmp/rawfile_hold

...But what are you actually trying to do here? There might be even more direct ways than this.
 

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LEARN ABOUT DEBIAN

plan9-cat

CAT(1)							      General Commands Manual							    CAT(1)

NAME

       cat, read, nobs - catenate files

SYNOPSIS

       cat [ file ...  ]
       read [ -m ] [ -n nline ] [ file ...  ]
       nobs [ file ...	]

DESCRIPTION

       Cat reads each file in sequence and writes it on the standard output.  Thus

	      cat file

       prints a file and

	      cat file1 file2 >file3

       concatenates the first two files and places the result on the third.

       If no file is given, cat reads from the standard input.	Output is buffered in blocks matching the input.

       Read copies to standard output exactly one line from the named file, default standard input.  It is useful in interactive rc(1) scripts.

       The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines.

       Read  always  executes  a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a-
       time data.  It never reads any more data from the input than it prints to the output.

       Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them.  It is
       useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window.

SOURCE

       /src/cmd/cat.c
       /src/cmd/read.c
       /bin/nobs

SEE ALSO

       cp(1)

DIAGNOSTICS

       Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines.

BUGS

       Beware of and which destroy input files before reading them.

																	    CAT(1)
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