Which of the following commands displays user id in its output? A. Is B. help C. date D. Is- command is used to remove the directory?
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- 1. Make a directory under your home directory called documents. Next, make a directory under the documents directory called spreadsheets. What is the absolute path for the spreadsheets directory? 2. Use the cat command to create a two-line file in your home directory called datainfo. On the first line, enter 144, and on the second line, enter 288. After the file is created, copy it from your home directory to the spreadsheets directory you created. 3. Set the permissions on the datainfo file so that the owner, group, and others can read and execute the file. (Otherwise, leave the default settings as is) 4. Append the current month's calendar to the datainfo file that is in your home directory. Next, copy your changed datainfo file over the older datainfo file in the spreadsheets directory, but use the copy option that prompts you before you overwrite the file in the spreadsheets directory. Check the contents of the datainfo file in the spreadsheets directory to make certain your copy…9. Which of the following commands displays user id in its output? A. Is B. help C. date D. Is -1 10. command is used to remove the directory? A. rdir B. remove С. rd D. rmdir 11. command is used to remove files? A. dm В. rm C. delete D. erasei.Write a command that copies all files in the current working directory that start with b and have a .txt extension to a directory called data that is a subdirectory of your home directory. ii.Write a command to move all of the files in /tmp/downloads whose names contain the string 2020 to the current working directory. iii.Write a command to display a directory listing of all files in the current working directory that consists of two characters, followed by a . (period), followed by another 3 characters.
- Which of the following sequence of commands are used to create Sub directory- Test inside a new directory- Final O a. mkdir Final , cd Final, mkdir Test O b. cd Final , mkdir Final, cd Test , mkdir Test O c. cd Test , mkdir Test , cd Final , mkdir Final O d. mkdir Final, cd Test , mkdir TestWrite the command that will display all directories (ONLY) that meet the followingcriteria: * directory name is "whiskey", "Whiskey", or "WHISKEY"* the group permissions on each directory are such that user accounts of that same group can change into each directory, and can add files, but not display any of the content* the owner permissions on each directory are such that the owner can display the contents of the directory, but cannot change into the directory* the public (all other user accounts) are unsetAssume that you are trying to delete a directory [temp) using the command rmdir but you have received a failed message indicating that the directory not empty. Which command from the following you would execute to accomplish the task? 1 out of O a. rm -a question O b. m -r temp Oc mrdir -r temp Od im p temp
- Following the execution of the command umask 731, the permissions of all newly created files and folders will be altered.What will the permissions be on all new files in this case? a. rw-rw-rw b.rwxrw-r--c. -- -r--rw d.-- --wx--xWrite the command that will create a tar archive of all the files in the directory named"/fir/sec/thi", that exists on the local machine. The name of the tar archive is "/tmp/animal".The command should be executed from the directory /home/user1. Write the command that will extract the tar archive that was created in Question #63. The contentsof the archive should be placed in the directory "/two/four/six". The command should be executedwhile the current directory is /tmp.The command find . -name "*.png" will send to stdout a list of all the files in the current directory and all of its descendent directories that have a .png extension. Give a command that uses command substitution to copy all such files to the directory ~/images
- $ mkdir .new_stuff $ ls After running these commands, you notice that you do not see your newly created directory in the output. Why?Which cat command is used to create empty files? i. cp ii. cat iii. touch iv. createExplain briefly the following commands a. keytool -genkey -alias sdo -keyalg RSA b. keytool -certreq -alias sdo -file sdoCSR.cer c. keytool -import -file sdo.cer -alias sdo –trustcacerts d. keytool -import -alias sdo -file fromsdo.cer