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How to tail a file from one host to another?
SSH into the first host you want to tail the log file of and before running tail, enter screen. Then tail the file on this host. CTRL+A, c will create a new screen or window. From this new window ssh into the 2nd host and tail the file there.
What happens when you run SSH-T in a remote terminal?
When you run ssh -t, the remote command is running with a controlling terminal and thus the remote grep behaves like your local one. MultiTail allows you to monitor logfiles and command output in multiple windows in a terminal, colorize, filter and merge. You can checkout in’side log.
What does the F command do after SSH?
The -f option after ssh allows you to enter a password before it runs in the background. Then you could have the line-by-line results in a single file and running: Would give you a little more control over the current “tail” command in case you wanted to use other tail options for displaying output.
Why does Linux tail only one file at a time?
In Linux I see an error “tail : can process only one file at a time”. In AIX I see the error as “Invalid options”. in Linux but not in AIX.
What’s the best way to tail a log file?
Brian Storti ( @brianstorti) offers an alternative method to the standard tail -f: less +F, which causes similar behavior as tail -f but allows for easily switching between navigation and watching mode. However, he notes that if you need to watch multiple files simultaneously, the standard tail -f offers better output.
How to view multiple log files at the same time?
Typically you may open multiple terminals to view tail -f of multiple files as we explained in our previous 10 examples to view unix log files. For example, if you want to view Apache error_log and access_log at the same time you may do the following in two different terminals.
How to see the output of multiple tail files?
Create the multitail.sh as shown below. Now, open multiple files using this new shell script as shown below. The latest version of the Unix tail command supports multiple -f as shown below. The above will display file name as the first line each time, and then shows the newly grown lines.