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How can i edit a field in a file (saving the changes in the file) using awk. I can find the line that i want to edit by looking up field 1, but on that line, i don't know how to edit field 2 and save change to file.
echo one two | awk ' { print $1 "$newval" } '
The command before the pipe-sign is the command you say will result in that first line of the file
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