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You may want to start reading the man page of the join command. As i see it it does exactly what you want. Note that join expects both input files to be sorted (in regards to the common key you want...

Let us be clear here. The above display is not sample output from any file. The above display is not adapted output from any file. The above output is contrived output that is intended to confuse...

That output doesn't seem to originally belong to the command you issued, and it certainly doesn't match the sample in post #1. Please apply utmost care when posting code and data!


Still from the...

Correct, indentation makes it readable but doesn't alter the logical flow.

$ awk '
{getline X < F2
n = split (X, T)
for (i=1; i<=NF; i++) $i += T[i]
}
1
' F2="maya22.txt" maya11.txt
3.56367e-07 7.22077e-08 -2.38554e-08...

you can think of this as short hand for a long hand mnemonic of:

if (i==NF/2)
output ORS
else
output OFS

using your approach:

paste file1 file2 |\
awk '{for(i=1;i<=NF/2;i++) printf("%s%s", $i+$((NF/2)+i), (i==NF/2)?ORS:OFS)}'

strange... given you sample files and the script:

#!/bin/ksh

paste maya1.txt maya2.txt |\
awk '{for(i=1;i<=NF/2;i++) printf("%s%s", $i+$((NF/2)+i), (i==NF/2)?ORS:OFS)}'



I get the...

NR == 1 ... while it is reading the first line of the first file do everything in the curly brackets - YES
The for loop changes the value of n from the total...

How about
awk 'NR == 1 {for (n=split($0, T); n; n--) F1[T[n]]; next} !($1 in F1)' file[12]
10
10
200
200
50