verify integrity of group files NAME grpck - verify integrity of group files SYNOPSIS grpck [options] [ group [ shadow ]] DESCRIPTIO......y cause these programs to loop forever or fail in other strange ways. Please run pwck and grpck to correct any such errors before converting to or from shadow passwords or group…...y cause these programs to loop forever or fail in other strange ways. Please run pwck and grpck to correct any such errors before converting to or from shadow passwords or group…...y cause these programs to loop forever or fail in other strange ways. Please run pwck and grpck to correct any such errors before converting to or from shadow passwords or group…...y cause these programs to loop forever or fail in other strange ways. Please run pwck and grpck to correct any such errors before converting to or from shadow passwords or group…...sword files 5 can't update password files 6 can't sort password files SEE ALSO group (5), grpck (8), passwd (5), shadow (5), usermod (8).