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Loglite readme fixes

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peteruithoven 2016-03-16 18:40:31 +01:00
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18
src/script/README-loglite.md
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@ -7,38 +7,42 @@ The loglite script allows coloring and filtering of log files by specifying cert
The script can follow an existing log file (comparable to `tail -f`), or it can follow its standard input. A file to follow is always specified as the first argument and a filter set name as the second (use '-' as file name to read from standard input). Details on filter sets can be found below. If no filter set is mentioned on the command-line, the script will attempt to use one named 'default'.
* Example following an existing log file using a filter set named 'example': `./loglite.lua print3d.log example`.
* Example following an existing log file using a filter set named 'example':
`./loglite.lua print3d.log example`.
* Example using standard input, to filter/view a whole log file, with a filter set named 'serial' (note the '-' as file name):
`cat print3d-ttyACM0.log | ./loglite.lua - serial`
* Example using standard input, to capture both output streams from `print3d`, with a filter set named 'example' (note the '-' as file name):
`./print3d -V 2>&1 | ./loglite.lua - example`.
#### On WiFi-Box
Loglite is already installed since version 0.10.10 as `loglite`.
Check `/root/.profile` for handy aliases like `tailfw` and `tailp3d`.
### Filter sets
The script looks for filter sets in the file '$HOME/loglite-filters.lua'. It looks like this:
``` lua
local M = {}
local M = {}
M.default = {
M.default = {
['options'] = { mode = 'keep', count = 'none' },
['patterns'] = {
['%(error%)'] = 'red',
['%(warning%)'] = 'yellow',
['%(bulk%)'] = 'bold,black'
}
}
}
M.specialization = {
M.specialization = {
['parent'] = 'default',
['options'] = { mode = 'delete' }
['patterns'] = {
['setState%(%)'] = 'bblue,_nodelete'
}
}
}
return M
return M
```
Here, the declaration and returning of `M` is required for the loglite script to be able to cleanly import the file. In `M.default`, 'default' is the name of a filter set being defined (similar for 'specialization'). Definitions can contain three so-called keys: 'parent' specifies a filter set to inherit from in order to reduce code duplication, 'options' and 'patterns' are described below.