Mac OS X Power Tools

X Colors dialog, 183–184

X Window systems, 546–547

xBack utility, 69

XFree86 program, 546

XPostFacto program, 154

XRay utility

for file types, 160–161, 161

for group permissions, 44

for invisible bit, 165

for uninstalling packages, 151

XShelf utility, 196, 197

Xupport utility

for cleaning drives, 499

for firewalls, 460

for journaling, 489

for swap files, 581