/etc/passwd /etc/group

N0N?sas

/etc/passwd  /etc/group以“+”开头的条目代表什么意思？

calcm

man


     Previous releases used a group entry beginning  with  a  `+'
     (plus  sign)  or `-' (minus sign) to selectively incorporate
     entries from a naming service source (for  example,  an  NIS
     map  or  data  from  an  LDAP  server)  for  group. If still
     required, this is supported by  specifying  group:compat  in
     nsswitch.conf(4).  The  compat source might not be supported
     in future releases. A possible sources is files followed  by
     ldap.  This has the effect of incorporating information from
     an LDAP server after the group file.