verify the integrity of password files NAME pwck - verify the integrity of password files SYNOPSIS pwck [options] [ PASSWORDFILE [ SHADOWF......tries) may 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…...tries) may 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…...tries) may 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…...tries) may 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…...les 5 can't update group files SEE ALSO group (5), groupmod (8), gshadow (5), passwd (5), pwck (8), shadow (5).