UNIX for Dummies Questions & Answers

#!/bin/csh
#     specify a counter
@ k = 1
#     loop
while ($k < 3)
#     read all text file with a specific number less than 3 in the last column of a record
foreach file ( *.txt)
#     capture the line by passing the column number using $k and print the record
awk -v  k="$k" '{j = NF; if ($j == k) print $0}'   $file
end
#     increment the counter
@ k = `expr $k + 1`
end

#!/bin/csh
awk '{j = NF; if ($j == 1) print $0}' *.txt 
awk '{j = NF; if ($j == 2) print $0}' *.txt 
awk '{j = NF; if ($j == 3) print $0}' *.txt

if ($j == k)

if ($j == '$k')

k="$k"