On 12/17/2014 10:12 PM, Angelo Moreschini wrote:
thanks to you both I was able to copy the data I was interested
Very happy to hear that, Angelo! We're glad to help! A bit of research shows that on older systems (e.g. F17-19), the first user was given a default UID and GID of 500. In F20 and later, I think it defaults to 1000. Endless fun for porting files back and forth. "Give me consistency or give me something else!"
On Wed, Dec 17, 2014 at 8:03 AM, Robin Laing <MeSat@xxxxxxxxxxxxxxx <mailto:MeSat@xxxxxxxxxxxxxxx>> wrote: On 2014-12-16 10:31, Rick Stevens wrote: On 12/16/2014 09:05 AM, Angelo Moreschini wrote: Hi, I I had to re install Fedora on my computer, I did it and now I have to restore the data from the old installation. Using an external support for the disc ("USB to SATA / IDE converter") I can access the old drive, and using Nautilus to see all the data that I would recover, but I do not have permission to copy them (on the disk where I made the new installation of Fedora). I tried to mount the partition (where the data is recorded that I want to recover), but the directories and the data that I have not mounted directly readable ... So I can not make the transfer of data that I need ... What is the correct way to conduct this operation ??? It is most likely that your user ID and group ID (UID and GID) are different on the new installation than they were on the old one. As a result, you'll need to do the mount and copy operations as the root user and convert the UID/GID of the files you're copying from the old installation to the UID and GID of your account on the new system. To find your current UID/GID, log into the new system and issue the command "id". Example: [rick@localhost ~]$ id uid=1000(rick) gid=1000(rick) groups=1000(rick),10(wheel) So I'm user ID 1000 and group ID 1000. Now, as the root user, mount your drive and use the "cp -an" command to copy the files from the old drive to wherever you need them (the "-n" part will keep you from overwriting existing files on the new system). If you really want to stomp on everything, omit the "n" (e.g. "cp -a" only). Also keep in mind that this will NOT copy hidden files or directories (those that start with a ".", such as ".bashrc" and the like). Those you have to copy individually or use a tool such as "rsync" or "find". Once you're done with that, again as root, try using: chown -R youruserID:yourgroupID /path/to/new/files to change the UID and GIDs of the files at "/path/to/new/files" to your new IDs (that you got from the "id" command). That's it in a nutshell. There may be better ways to do it and you'll have to adapt these instructions to fit your particular case. ------------------------------__------------------------------__---------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx <mailto:ricks@xxxxxxxxxxxxxx> - - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 - - - - "I'd explain it to you, but your brain might explode." - ------------------------------__------------------------------__---------- If you have copies of the /etc/passwd and /etc/groups files, then you have an option to move your users to the new machine and then it makes it much easier to restore files. >From a file that I have used for years. UGIDLIMIT was 500 in the original. First create a tar ball of old uses (old Linux system). Create a directory: # mkdir /root/move/ Setup UID filter limit: # export UGIDLIMIT=1000 Now copy /etc/passwd accounts to /root/move/passwd.mig using awk to filter out system account (i.e. only copy user accounts) # awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/passwd > /root/move/passwd.mig Copy /etc/group file: # awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534)' /etc/group > /root/move/group.mig Copy /etc/shadow file: # awk -v LIMIT=$UGIDLIMIT -F: '($3>=LIMIT) && ($3!=65534) {print $1}' /etc/passwd | tee - |egrep -f - /etc/shadow > /root/move/shadow.mig Make a backup of /home and /var/spool/mail dirs: # tar -zcvpf /root/move/home.tar.gz /home # tar -zcvpf /root/move/mail.tar.gz /var/spool/mail # mkdir /root/newsusers.bak # cp /etc/passwd /etc/shadow /etc/group /etc/gshadow /root/newsusers.bak Now restore passwd and other files in /etc/ # cd /path/to/location # cat passwd.mig >> /etc/passwd # cat group.mig >> /etc/group # cat shadow.mig >> /etc/shadow # /bin/cp gshadow.mig /etc/gshadow Please note that you must use >> (append) and not > (create) shell redirection. Now copy and extract home.tar.gz to new server /home # cd / # tar -zxvf /path/to/location/home.tar.gz Now copy and extract mail.tar.gz (Mails) to new server /var/spool/mail # cd / # tar -zxvf /path/to/location/mail.tar.gz Now reboot system; when the Linux comes back, your user accounts will work as they did before on old system: # reboot Please note that if you are new to Linux perform above commands in a sandbox environment. Above technique can be used to UNIX to UNIX OR UNIX to Linux account migration. You need to make couple of changes but overall the concept remains the same. -- Free, full feature astronomy program at http://www.stellarium.org Free Office Suite at http://www.libreoffice.org -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx <mailto:users@xxxxxxxxxxxxxxxxxxxxxxx> To unsubscribe or change subscription options: https://admin.fedoraproject.__org/mailman/listinfo/users <https://admin.fedoraproject.org/mailman/listinfo/users> Fedora Code of Conduct: http://fedoraproject.org/code-__of-conduct <http://fedoraproject.org/code-of-conduct> Guidelines: http://fedoraproject.org/wiki/__Mailing_list_guidelines <http://fedoraproject.org/wiki/Mailing_list_guidelines> Have a question? Ask away: http://ask.fedoraproject.org
-- ---------------------------------------------------------------------- - Rick Stevens, Systems Engineer, AllDigital ricks@xxxxxxxxxxxxxx - - AIM/Skype: therps2 ICQ: 22643734 Yahoo: origrps2 - - - - Memory is the second thing to go, but I can't remember the first! - ---------------------------------------------------------------------- -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
