Refine ps command output more easily parsable.
Show process-ps header.
Add a diff substition pattern.
Refine library version.
Don't show ps's header if no process found.
Compute different-sections correctly.
Remove debug print.
Add diff substitution patterns.
Show /etc/system-release.
Show more OS versions.
Show more OS versions.
Refine description for rsync.
Merge branch 'master' of github.com:akr/chkbuild
Show lsb_release and sw_vers existence.
capture_stdout extracted.
Show "eselect --brief profile show" for Gentoo.
Add a diff substitution pattern.
Fix no_differences_message.

title don't contain "success" now.
Don't show the backtrace when timeout.
Show several commnands availability.