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Full Discussion: Nobody user group in Linux
Operating Systems Linux Nobody user group in Linux Post 302813725 by devesh123 on Tuesday 28th of May 2013 03:30:24 AM
Old 05-28-2013
Nobody user group in Linux
Hi I am facing problem of taking backup of file system as username1.
There are some files in system which is having group ownership as nobody.
and username1 is not able to open this file and backup is failing .Even as a root user I can not open this file.

File which is creating problem is
Code:
drwx------ 2 cwosinternal nobody 4096 May  7 11:35 cwos-internal_keys

Below are content of group and passwd file

Code:
#cat /etc/group
root:x:0:
bin:x:1:
sshd:x:65:
nobody::99:
ntp:!:103:
ldap:!:70:
username1:x:501:applicuser

Code:
# cat /etc/passwd
root:x:0:0:root:/root:/bin/bash
bin:x:1:1:bin:/bin:/bin/false
sshd:x:71:65:sshd:/var/lib/sshd:/bin/false
nobody:x:99:99:nobody:/:/bin/false
ntp:x:74:103:NTP daemon:/var/lib/ntp:/bin/false
ldap:x:76:70:User for OpenLDAP:/var/lib/ldap:/bin/false
username1:x:101:501:applicuser:/home/username1:/bin/bash
pminternal:x:102:99:pminternal:/home/pminternal:/bin/tspshell
cwosinternal:x:104:99:cwosinternal:/home/cwosinternal:/bin/tspshell

Is it possible to assign nobody group to user username1 so that it can access that file.Is there any impact of assigning this usergroup nobody to any other user.As username1 is handling critical applications

Pls help in this
 

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LEARN ABOUT MOJAVE

vgcfgrestore

VGCFGRESTORE(8)                                               System Manager's Manual                                              VGCFGRESTORE(8)

NAME

       vgcfgrestore - restore volume group descriptor area

SYNOPSIS

       vgcfgrestore [-d|--debug] [-f|--file filename] [-l[l]|--list] [-h|--help] [-M|--Metadatatype1|2] [-t|--test] [-v|--verbose] VolumeGroupName

DESCRIPTION

       vgcfgrestore  allows  you  to  restore  the metadata of VolumeGroupName from a text backup file produced by vgcfgbackup.  You can specify a
       backup file with --file.  If no backup file is specified, the most recent one is used.  Use --list for a list of the available  backup  and
       archive files of VolumeGroupName.

OPTIONS

       -l | --list -- List files pertaining to VolumeGroupName
              List  metadata  backup  and  archive  files  pertaining  to VolumeGroupName.  May be used with the -f option.  Does not restore Vol-
              umeGroupName.

       -f | --file filename -- Name of LVM metadata backup file
              Specifies a metadata backup or archive file to be used for restoring VolumeGroupName.  Often this file has been created with  vgcfg-
              backup.

       See lvm for common options.

REPLACING PHYSICAL VOLUMES

       vgdisplay  --partial  --verbose will show you the UUIDs and sizes of any PVs that are no longer present.  If a PV in the VG is lost and you
       wish to substitute another of the same size, use pvcreate --restorefile filename --uuid uuid (plus additional arguments as appropriate)  to
       initialise  it with the same UUID as the missing PV.  Repeat for all other missing PVs in the VG.  Then use vgcfgrestore --file filename to
       restore the volume group's metadata.

SEE ALSO

       lvm(8), vgcreate(8)

Sistina Software UK                                      LVM TOOLS 2.02.95(2) (2012-03-06)                                         VGCFGRESTORE(8)
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