gb, aka Greenbar, is a command line filter which, by default, inverts every other line of its input.
In this way, it's reminiscent of greenbar paper.


% tail -f /var/log/httpd/access_log | gb

or to highlight lines that contain the word "named":

% tail -f /var/log/syslog/daemon.log | gb named

John P. Speno speno@macspeno.com



Credit to M. Sirota for the original idea and awk implementation.
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.