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#