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jonas@homer:/tmp$ id

uid=1000(jonas) gid=1000(jonas) groups=4(adm),20(dialout),24(cdrom),29(audio),44(video),46(plugdev),106(fuse),107(lpadmin),115(admin),120(sambashare),122(kvm),123(libvirtd),1000(jonas)

jonas@homer:/tmp$ touch /tmp/einand.ibm

jonas@homer:/tmp$ chmod 700 /tmp/einand.ibm

jonas@homer:/tmp$ ls -l /tmp/einand.ibm

-rwx------ 1 jonas jonas 0 2012-06-27 16:19 /tmp/einand.ibm

jonas@homer:/tmp$ sudo -s

root@homer:/tmp# id

uid=0(root) gid=0(root) groups=0(root)

root@homer:/tmp# rm /tmp/einand.ibm

root@homer:/tmp# ls -l /tmp/einand.ibm

ls: cannot access /tmp/einand.ibm: No such file or directory

root@homer:/tmp#