- Finish usage
cfg-update is a utility used on Gentoo to manage configuration file updates. It allows system administrators to review then accept or reject upstream configuration changes, which frequently happens when packages are updated. It is has an integrated backup system which does not require an external version control system.
emerge --ask app-portage/cfg-update
Configuration is done through /etc/cfg-update.conf. The most common option users need to change is the MERGE_TOOL option to the preferred merge tool of the system. Supported tools include meld, xxdiff, kdiff3, gvimdiff, tkdiff, vimdiff, sdiff and imediff2.