logfile='access.log' command='tail -f ‘+logfile+'|grep “timeout”‘ popen=subprocess.Popen(command,stdout=subprocess.PIPE,stderr=subprocess.PIPE,shell=True) while True: line=popen.stdout.readline().strip() print line
import time file = open(‘access.log') while 1: where = file.tell() line = file.readline() if not line: time.sleep(1) file.seek(where) else: print line,
import time def follow(thefile): thefile.seek(0,2) while True: line = thefile.readline() if not line: time.sleep(0.1) continue yield line if __name__ == ‘__main__': logfile = open(“access-log”,”r”) loglines = follow(logfile) for line in loglines: print line,
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