Tag: unix

Following log files and other output

In many situations, especially when testing, I like to see the log file content (or other system output) on one of my open command line windows.

Most of the time

tail -f <log-file-name>

is just fine. However, sometimes I like to have more control of what displayed. In these cases, I use less (https://en.wikipedia.org/wiki/Less_(Unix)):

less +F <log-file-name>

is more convenient (and powerful): I can navigate the whole file, search for specific content.

Note, that while tail uses a lower-case ‘-f’ to follow the file as it’s being written to, less uses an uppercase ‘+F’.

Update (2022-02-04): Fixed it: less uses ‘+F’ (plus upper-case F) as the command line argument, not ‘-F’.