Matching column value from 2 different file using awk and append value from different column Post: 303003472

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Top Forums Shell Programming and Scripting Matching column value from 2 different file using awk and append value from different column Post 303003472 by RudiC on Thursday 14th of September 2017 07:51:12 AM

09-14-2017

Registered User

Code:

awk -F\" '                                      # set field sep. to "
        {for (i=2; i<=NF; i+=2) \               # in every second (= inside quotes) field
         gsub (/,/, "\001", $i)                 # replace the comma with ^A (a placeholder)
        }
1                                               # print the modified line
' OFS=\" file2 |                                # set output field sep. to " (important!)
awk -F',' '                                     # set FS to comma
NR==FNR {a[$2] = $1                             # save $1 (text to append) to array indexed by $2
         next                                   # stop processing the actual line; goto next
        }
        {print $0, a[$2] }                      # print file2's line, followed by the app. txt, if exists 
' - file1 |                                     # work on input stream, i.e. stdin ("-", piped in) and file1
awk -F\" '                                      # undo comma replacements as in step 1
        {for (i=2; i<=NF; i+=2) \
                 gsub ("\001", ",", $i)
        }
1
' OFS=\"

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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