Start process & check log until start line found?

[naffcat]

Hi,

Can anyone help, I need to write a linux shell script which will either tail a log until a particular line appears (with for example "started") or perhaps have a script which has a loop - sleep - grepp check for line - then exit if found.

I imagine this kind of thing has been done before and there's probably more than one way to do it but would appreaciate any examples

Many thanks

[nbhadauria]

simple thought use grep -B100000000000 "started"

[naffcat]

Thanks - problem is there are previous instances of "started" within the log - that's why I was hoping someone might have come across this before - and have some kind of check / sleep / loop until found after present time.

[nbhadauria]

ok. then something like this .

if grep -q "string" file; then

Also try http://sourceforge.net/projects/swatch/