log_viewer is an ncurses text UI for viewing rosout logs.
Receive, filter, and navigate through all published rosout log messages from within a terminal to support debugging a robot live.
Many rosout log messages don't get printed to the terminal in the normal course when there are lots of nodes/messages. There is also not a convienient way to filter and navigate through them in real time.
swri_console provides most of the desired functionality very well, but is Qt based and requires a graphical interface.
log_viewer is very similar in concept and design to swri_console, but uses ncurses instead of Qt for the interface.
Log messages can be filtered based on:
log_viewer also supports text searches and jumping from match to match.
Log messages are copied to the clipboard by selecting them.
Like swri_console, log_viewer doesn't need roscore to start and will automatically connect/reconnect with roscore when it becomes available.
CTRL-c Exit log viewer
CTRL-h Show/hide help screen
Up Arrow Scroll up
Down Arrow Scroll down
Left Arrow Scroll left
Right Arrow Scroll right
Page Up Scroll up a screen
Page Down Scroll down a screen
Home Scroll to first message
End Scroll to last message and follow
Tab Change focus to next input
F1 Show/hide debug level
F2 Show/hide info level
F3 Show/hide warning level
F4 Show/hide error level
F5 Show hide fatal level
F7 Enable/disable node filter
CTRL-a Select all log lines and copy to clipboard
CTRL-n Show/hide node selection
CTRL-s Search for matching string
CTRL-x Clear search
Backspace Prev match
Enter Next match
CTRL-e Enable/disable text exclude filter
CTRL-f Enable/disable text include filter
There is limited mouse support for selecting log messages and enabling/disabling the log level and node filters. Due to a bug in the currently distributed version of ncurses, mousewheel scrolling only works in the up direction.