Increment One Value in a Text Line, Using Script
I Have a Text File as Input. I Need to Filter That Through Some Program, Sed, Awk, Whatever, Where I Need to Increment a Value in a Particular Line Every Time...
I have a text file as input. I need to filter that through some program, SED, AWK, whatever, where i need to increment a value in a particular line every time i run the script.
What's the best way of doing it?
Sample text:
File Type
Rev 100
data a
data b
file loc
comment line
eof
only the "Rev 100" should change to "Rev 101"
2 Answers
cp textfile /tmp/textfile
awk '{if ($1 == "Rev") printf("%s %d\n", $1, $2 + 1); else print $0;}' /tmp/textfile > textfile
awk:
/^Rev / {
print "Rev " $2+1
next
}
{
print
}
Sarah Jenkins is a veteran tech journalist with over 12 years of experience covering artificial intelligence, mobile innovations, and digital ethics. Her insights have appeared in leading technology publications worldwide.
