Find any file unixx update#
This will update every 2 seconds by default. Next you can either watch the differences on screen using watch watch. Make it write to a file if you want #!/bin/bash Write a bash script to find the differences, and update file2 touch check-differences.sh You have 1 file and you want to watch as changes are made to it: Play around with the interval of watch or other options for the commands below. You can use these methods to modify the behavior whatever way you want, such as writing the changes to a file to keep record. Here is a good trick to watch the differences as they happen in real time (or close) between 2 files or in one file being written to. Hat-tip to rgmarcha for pointing this out in the comments.įorget tailf, diff is the command you want. The editor (see also the discussion of LESSEDIT in PROMPTSġ. Line number will be displayed in the verbose prompt and in the =Ĭommand, and the v command will pass the current line number to
The default (to use line numbers) mayĬause less to run more slowly in some cases, especially with a For example, +G causes less to initially display eachįile starting at the end rather than the beginning.įor really long logs, I find it convenient to use the -n option which turns off line numbering. Any command can be initialized on startup using the + option: +cmd Causes the specified cmd to be executed each time a new file isĮxamined. Key bindings are pretty much the same as in vi. If I need to search for something, I type ^C to stop following the file and ? to start searching backwards. I prefer using less +FG 1 over tail -f because I find myself needing to search a log file for a specific error or ID.
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