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You can use tail -f to keep reading from the file as it grows. Be careful with what you feed tail -f into. You can pipe tail -f into a filter that waits until the desired log line and quits. What won't work is if you pipe tail -f into a filter that pipes into another filter, because the intermediate filter will buffer its output. This works: : >file.log ...


Have you considered Watir? http://watir.com/ When you've added the package, you can run it as a standalone file or from irb, line-by-line after include 'watir-webdriver'. I've found it to be more responsive than selenium-webdriver, but without the test recording GUI to help work out complex test conditions.


I just recently started using the WebDriver from Selenium 2 in Java. There is a driver called HtmlUnitDriver that fully supports JavaScript but does not fire up an actual browser. It is not a light solution but it does get the job done. I've designed the code to run from the command line and save the web data to files.


It is a little harder in straight shell script, but this is what I was using for quite a while for tomcat and oc4j: perlscr=' alarm 120; open F, "<$ARGV[0]"; seek F -($ARGV[1]*80),2; while (1) {exit if (<F>=~$ARGV[2]);}' window=10 scanfor="^INFO: Server startup in \d+ ms" perl -e "$perlscr" $logfile $window "$scanfor" 2>&1 0<&1 The ...


You can add this to your script to implement the pause: perl -e 'use File::Tail; my $ref=tie *FH,"File::Tail",(name=>"/var/log/messages",maxinterval=>1); while(<FH>) { exit if /Started SocketListener/ };' It makes use of the perl File::Tail module to behave like tail -f logfile | grep Started SocketListener. Replace /var/log/message ...

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