Run something like this after you change the users uid to see if any files that were owned by the old uid and change them using the second command.
make note of the users uid before you change it.
This will search the entire system for all files that were owned by that user which will now be owned by the old uid.
now change ownership of the file that is owned by the old uid to the new username
The problem is the OP has multiple users that have the same uid, so there's no way to automatically assign one uid to another since there's no context-free mapping.
For any given file, you can't really know which new user to assign the file ownership to because there's more than one possibility with no way to figure out which one is correct. You can probably assume if it's under the user's home directory that it's owned by that user, and maybe some other context-specific information is available, but in general there's no way to tell.
jlliagre's post didn't explicitly state that issue. FWIW, I like m.d.ludwig approach of giving all the users with overlapping uids new uids.
Hi guys,
In the UNIX work environment we have access other peoples directory and sometimes we have full
access to other people's files.
How can we find out , other than modification time that WHO did modification on any file ?
I know we can change the access of any file by chmod but... (0 Replies)
Hi to all,
Need help! For user sysoper on oracle, I want to know who and on which date/time the password has been modified? The platform is unix itself.
Thanks (2 Replies)
Please anyone can tell me what is the procedure to perform the required modifications in configuration files to disable a particular user??? (3 Replies)
How to restrict modification of a file while it is already in use by another user?
If a file is in use by one user account, how to restrict it so that no one else can change it until its closed by the first user? (3 Replies)
Hi, I'm executing a script to check if a file has been modified on a shared folder.
I use this to start another script every time the file has been modified.
To do this I use the 'ls' command to get the last modification date of the file.
My problem is that the computer hosting the shared... (5 Replies)
I need help modifying the code below.
DATAFILE is a log file.
I have two strings i need to search for in the log file.
The two strings are:
1. ERROR
2. com.rolander.promotions.client
awk 'BEGIN {
while((getline < "'${SFILE}'")>0)
S
FS="\n"; RS="\n"
} (11 Replies)
I have below code, i want to run this code, but this below code should run on
myblocka
myblockb
myblockcc
myblockxx
myblockanything
but it will not run on "myblock"
for BLOCK in /sys/block/myblock*
do
echo "100000" > "$BLOCK"/abcd
done (7 Replies)
Referring back to this thread:
Tapatalk Modification for vB3 - Issue with Avatar Icons
I mentioned that we had some "system bot" code:
In this post, I describe that code and how easy it is to create a "system bot" user for Tapatalk (TT):
Basically, its quite easy. We add a hook to... (0 Replies)
How do a user login with full user-environment preset to Bash shell then automatically do path modification with few script codes, either on command-line or put it in a script file.
what i tried:
bash --login -c PATH="/ANewPath:${PATH}"
bash --login -c 'PATH="/ANewPath:${PATH}"; export PATH'... (2 Replies)
I'm usia Raspbian, a Debian subset, and wondering what work would be involved in altering the cp command.
cp at present needs a full path and file name for source and at least full filename for destination. How can I change this so the second parameter isn't needed? So if the destination... (6 Replies)
Discussion started by: MuntyScrunt
6 Replies
LEARN ABOUT NETBSD
mount_umap
MOUNT_UMAP(8) BSD System Manager's Manual MOUNT_UMAP(8)NAME
mount_umap -- user and group ID remapping file system layer
SYNOPSIS
mount_umap [-o options] -g gid-mapfile -u uid-mapfile target mount-point
DESCRIPTION
The mount_umap command is used to mount a sub-tree of an existing file system that uses a different set of uids and gids than the local sys-
tem. Such a file system could be mounted from a remote site via NFS, a local file system on removable media brought from some foreign loca-
tion that uses a different user/group database, or could be a local file system for another operating system which does not support Unix-
style user/group IDs, or which uses a different numbering scheme.
Both target and mount-point are converted to absolute paths before use.
The options are as follows:
-g gid-mapfile
Use the group ID mapping specified in gid-mapfile. This flag is required.
-o Options are specified with a -o flag followed by a comma separated string of options. See the mount(8) man page for possible options
and their meanings.
-u uid-mapfile
Use the user ID mapping specified in uid-mapfile. This flag is required.
The mount_umap command uses a set of files provided by the user to make correspondences between uids and gids in the sub-tree's original
environment and some other set of ids in the local environment. For instance, user smith might have uid 1000 in the original environment,
while having uid 2000 in the local environment. The mount_umap command allows the subtree from smith's original environment to be mapped in
such a way that all files with owning uid 1000 look like they are actually owned by uid 2000.
target should be the current location of the sub-tree in the local system's name space. mount-point should be a directory where the mapped
subtree is to be placed. uid-mapfile and gid-mapfile describe the mappings to be made between identifiers.
The format of the user and group ID mapping files is very simple. The first line of the file is the total number of mappings present in the
file. The remaining lines each consist of two numbers: the ID in the mapped subtree and the ID in the original subtree.
For example, to map uid 1000 in the original subtree to uid 2000 in the mapped subtree:
1
2000 1000
For user IDs in the original subtree for which no mapping exists, the user ID will be mapped to the user ``nobody''. For group IDs in the
original subtree for which no mapping exists, the group ID will be mapped to the group ``nobody''.
There is a limit of 64 user ID mappings and 16 group ID mappings.
The mapfiles can be located anywhere in the file hierarchy, but they must be owned by root, and they must be writable only by root.
mount_umap will refuse to map the sub-tree if the ownership or permissions on these files are improper. It will also report an error if the
count of mappings in the first line of the map files is not correct.
SEE ALSO mount(8), mount_null(8)HISTORY
The mount_umap utility first appeared in 4.4BSD.
BUGS
The implementation is not very sophisticated.
BSD March 6, 2001 BSD