I have a file with contents
x a x b x c
I want to grep the last occurrence,
x c
when I try
sed -n "/x/,/b/p" file
it lists all the lines, beginning x to c.
x
c
I'm not sure if I got your question right, so here are some shots in the dark:
Print last occurence of x (regex):
grep x file | tail -1
Alternatively:
tac file | grep -m1 x
Print file from first matching line to end:
awk '/x/{flag = 1}; flag' file
Print file from last matching line to end (prints all lines in case of no match):
tac file | awk '!flag; /x/{flag = 1};' | tac
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