awk - last instance of a string

Shell Programming and Scripting
1

How do I use awk to find the last occurence of a string in a file?

2 
grep string file | tail -1

If you insist on using awk:

awk '/string/{a=$0}END{print a}' file
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3

Hi, mirni:

To match an arbitrary string, it's best to stay away from regular expression syntax, since the string could include metacharacters. Tweaking your code slightly:

grep -F string file | tail -n1 

awk -v s=string 'index(s, $0) {a=$0} END {print a}' file

Regards,
Alister

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4 
$ tac file  | grep -m1 string
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