{"id":1288,"date":"2009-12-23T23:21:44","date_gmt":"2009-12-24T04:21:44","guid":{"rendered":"http:\/\/g33kinfo.com\/info\/?p=1288"},"modified":"2009-12-23T23:21:44","modified_gmt":"2009-12-24T04:21:44","slug":"tailf-watch-logs-in-realtime","status":"publish","type":"post","link":"https:\/\/g33kinfo.com\/info\/tailf-watch-logs-in-realtime\/","title":{"rendered":"tailf – Watch logs in realtime"},"content":{"rendered":"

The most widely used command for monitoring log file is tail. Tail binary allows a user to watch the log file grow in realy time. Watching the log file grows can be done using an additional -f parameter. Alternatively, another approach to watch a log file grows can be done using tailf binary command.<\/p>\n

Tailf:
\ntailf will print out the last 10 lines of a file and then wait for the file to grow. It is similar to tail -f but does not access the file when it is not grow-ing. This has the side effect of not updating the access time for the file, so a filesystem flush does not occur periodically when no log activity is happening.<\/p>\n

tailf is extremely useful for monitoring log files on a laptop when logging is infrequent and the user desires that the hard disk spin down to conserve battery life.<\/p>\n

Example:
\n
\ntailf \/var\/log\/squid\/access.log
\n<\/code>
\n<\/p>\n

Similarly you can watch the same log file using -f argument<\/p>\n

Example:
\n
\ntail -f \/var\/log\/squid\/access.log
\n<\/code><\/p>\n

tailf is similar to
\n
\nless +F \/var\/log\/exim_mainlog
\n<\/code>
\n<\/p>\n

without the pause and resume features. See the less +F post here<\/a><\/u>.<\/p>\n","protected":false},"excerpt":{"rendered":"

The most widely used command for monitoring log file is tail. Tail binary allows a user to watch the log file grow in realy time. Watching the log file grows can be done using an additional -f parameter. Alternatively, another approach to watch a log file grows can be done using tailf binary command. Tailf:… <\/p>\n

Read More<\/i><\/a><\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-1288","post","type-post","status-publish","format-standard","hentry","category-info"],"yoast_head":"\ntailf - Watch logs in realtime - Linux Shtuff<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/g33kinfo.com\/info\/tailf-watch-logs-in-realtime\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"tailf - Watch logs in realtime - Linux Shtuff\" \/>\n<meta property=\"og:description\" content=\"The most widely used command for monitoring log file is tail. Tail binary allows a user to watch the log file grow in realy time. 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