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Softwares          |
Main /
Read-only-filesystem# dd if=/dev/zero of=readonly.img bs=1024 count=1024 # mkfs.ext2 readonly.img # mkdir readonlyfolder # mount readonly.img readonlyfolder/ # echo "can't delete this" > readonlyfolder/permanent.txt # umount readonlyfolder # mount -o ro readonly.img readonlyfolder # cat readonlyfolder/permanent.txt can't delete this # rm readonlyfolder/permanent.txt rm: cannot remove `readonlyfolder/permanent.txt': Read-only file system |