xample : signature of ext filesystem is 53EF , signature of BTRFS filesystem is 0x5F4248526653 , signature of xfs filesystem is 58465342 ... thanks
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Does anyone know what is signature for the F2FS filesystem?
Example : signature of ext filesystem is 53EF , signature of BTRFS filesystem is 0x5F4248526653 , signature of xfs filesystem is 58465342 ... thanks
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- Which command can be used to repair an XFS filesystem? a. fsck -t xfs /dev/sdb1 b. e2fsck /dev/sdb1 c. fsck.xfs /dev/sdb1 d. xfs_repair /dev/sdb11. What is portmapper? Which version of NFS uses portmapper? Why firewallconfiguration is difficult for these version of NFS? 2. You are working as a Storage Admin at Wipro technologies. There is a Storage Arrayof 40 Disks. Your manager has asked to upgrade one of the disk from ext2 file systemto ext3 file system. Explain the step by step procedure to upgrade from ext2 to ext3.Also explain the 3 different modes that you specify when mounting with tune2fs. 3. Compute the capacity of the disk with the following parameters 256 bytes per sector,600 sectors per rack, 40,000 tracks per surface, 2 surfaces per platter and 6 platters per diskGiven the following output from /etc/fstab, which filesystems will be automaticallychecked on boot by the fsck command?/dev/sda1 / ext4 defaults 1 1none /dev/pts devpts gid=5,mode=620 1 0none /proc proc defaults 0 1none /dev/shm tmpfs defaults 1 0/dev/sdc2 swap swap defaults 0 1/dev/dvd /media/dvd iso9660 noauto,ro 0 0/dev/fd0 /media/floppy auto noauto 0 0a. none, as fsck must be run manually for each filesystemb. /, /dev/pts, and /dev/shmc. /, /proc, and swapd. all of them, as fsck is run automatically at boot for all filesystems
- (a) Using a text editor, create a textfile, name it secretLetter.txt containing the text "The setting sun is limitless in beauty, alas it also means that dusk is near." Encrypt this file using the openssl toolset with your yhd7213 as the encryption key, using(i) AES 256 bit key, OFB mode, name the encrypted file secretLetter_aes256.enc (ii) DES CBC mode, name the encrypted file secretLetter_des.encAttach the screenshots and submit both filesUse df (with the human readable option), a pipe, and the grep command to show everything EXCEPT the tmpfs and devtmpfs filesystems. What is the full command of df -h with the pipe and grep command that show everything EXCEPT the tmpfs and devtmpfs filesystem ?What does the command dumpe2fs –h do?a. backs up an ext2 filesystemb. displays the number of inodes used and available in an ext2 filesystemc. dumps an ext2 filesystemd. is not a valid command
- How does the tar command work for creating archives in Linux?Use df (with the human readable option), a pipe, and the grep command to show everything EXCEPT the tmpfs and devtmpfs filesystems. What is the correct and full df command ?Please write down the Linux command for each question. 17.1 What command should be used to change the read, write and execute permission of a file? 17.2 The command for a user wants to delete recursively all files and subdirectory from current directory is 17.3 What is the command which edits the scheduler for automatic command executions at background? 17.4 This command let a user check the names of the groups that this a/c belongs to. 17.5 What do we expect to see if running “$ echo `expr 2 \*3`? 17.6 Upon booting up the OS, the latest kernel initialization daemon process that the Ubuntu distribution is using today is ____ 17 Like to find files with “.sh” extensions from current local directory to all its subdirectories, what is the command? 17.8 What is the command to find the IP address of a network card? 17.9 What is usually written on the first line in shell scripts? 17.10 Like to backup all files and subdirectories under /var/www, the output file name is today.tar. The…
- Per guidance from your instructor, in a terminal run the following commands: Check the version of OpenSSL by running: openssl version. Create a text file named txt with any text as its contents. Encrypt this file using AES: openssl enc -aes-256-cbc -salt -in test.txt -out test.enc Encrypt this file using AES and Base64 Encode: Same as above but add –a option and use the output enc file as the input into the decrypt. Why would you Base64 encode a file? Decrypt both of the files. Download or locate 2 image files (shown as pic1.png and pic2.png below). Create MD5 Hash on Pic 1 by running: openssl dgst –md5 pic1.png Create MD5 Hash on Pic 2 by running: openssl dgst –md5 pic2.png What is steganography? How could hashing be used to prevent steganography? Create a password by running: openssl passwd [Your Text Here] Take a screenshot of the demonstration.Linux: The command that can be used to mount all filesystems listed in /etc/fstab except those containing the noauto option is...
