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Full Discussion: Print arguments using array elements not working?
Top Forums Shell Programming and Scripting Print arguments using array elements not working? Post 302803289 by shaner on Monday 6th of May 2013 11:29:25 AM
Old 05-06-2013
Ok my apologies for not being clear enough. I was trying to get right at at but here is the whole code.
Code:
# Get input file from user
echo "Provide name of master file for use"
read infile
sed '1,3d;$d' $infile > infilemod

# Get output file name from user
echo "Provide desired output file name"
read outfile

# Get number of columns to be included
echo "Enter how many filters to be used"
read num

# Get which columns to use
echo "Provide the desired columns to use. Press [enter] after each"
for (( i = 0 ;  i < $num;  i++ ))
do
 read choices[i]
done

# Make file
# Print first column
awk ' { print $1, " " } ' infilemod >temp1

# Selected columns
for (( i = 0 ;  i < $num;  i++ ))
do
 awk -v f2=temp1 -v c=${choices[$i]} ' { getline < f2; print $0, c, " "; } ' infilemod >temp2
 mv temp2 temp1
done

# Add header
cat base9header.txt temp1 > tmp; mv tmp $outfile

# Remove extra files
rm infilemod
rm temp1

exit 0

So what it does is gets the input file from the user, gets an output file name, gets the number of columns you want to take from the input, then gets WHICH of those columns to take, then prints them after printing the first column. I'm sure there is a much more streamlined way to do this but so far this is working except for the printing of the choice columns which I can't seem to make work.

The input file is something like 46 columns of data with 3 lines of header that I cut out. I want the code to be able to streamline the choosing of whatever columns I need to use for my work and put those choice columns into a new file with a header that I add from base9header.txt

Thanks for the help!
 

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LEARN ABOUT MOJAVE

colrm

COLRM(1)						    BSD General Commands Manual 						  COLRM(1)

NAME

     colrm -- remove columns from a file

SYNOPSIS

     colrm [start [stop]]

DESCRIPTION

     The colrm utility removes selected columns from the lines of a file.  A column is defined as a single character in a line.  Input is read
     from the standard input.  Output is written to the standard output.

     If only the start column is specified, columns numbered less than the start column will be written.  If both start and stop columns are spec-
     ified, columns numbered less than the start column or greater than the stop column will be written.  Column numbering starts with one, not
     zero.

     Tab characters increment the column count to the next multiple of eight.  Backspace characters decrement the column count by one.

ENVIRONMENT

     The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of colrm as described in environ(7).

EXIT STATUS

     The colrm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

     awk(1), column(1), cut(1), paste(1)

HISTORY

     The colrm command appeared in 3.0BSD.

BSD
								  August 4, 2004							       BSD
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