Assume the following is the directory “tests” under my home directory. bash3.2$

Question

Assume the following is the directory “tests” under my home directory.

bash3.2$ ls -al

      11

drwx------           2 kuitche kuitche     2048 Oct 23 20:59 awk

-rw-------            1 kuitche kuitche      808 Jul 24 2000 bin.doc

drwxrwxrwx 3 kuitche root 2048 Jul 12 14:04 junk

-rwxrwxrwx 1 kuitche root 21504 Jul 13 2000 this.dir

Complete the table below

File name

File type

File size

(in bytes)

File Owner

Group permissions

awk

bin.doc

junk

this.dir

1. What disk space, in bytes, is occupied by the subdirectory “tests”?

2. Give the command(s) to change the permissions on the file this.dir to read only for the owner’s group; to read, write and execute for the owner; and read & execute for everyone else

3. Assume I go through the following sequence of three UNIX command steps:

bash3.2$ echo this is a script file > script.bash

bash3.2$ chmod 342 script.bash

bash3.2$ ls –al

Give the output line corresponding to script.bash

4. Assume the permissions for a given file "random" is unknown. Explain how, as an administrator, you will remove execute and write permissions (without altering existing permissions) from other people using the system.

File name

File type

File size

(in bytes)

File Owner

Group permissions

awk

bin.doc

junk

this.dir

Explanation / Answer

1.

File name

File type

File size

(in bytes)

File Owner

Group permissions

awk

bin.doc

junk

this.dir

1. The disk space occupied by the sub directory "tests" is 2048+808+2048+21504=26,408 bytes.

2. The command is $chmod 745 this.dir

3. The output of script.bash

--wxr---w- 1 shreya staff 22 Feb 13 12:20 script.bash

4. The command is $chmod o-wx random

File name

File type

File size

(in bytes)

File Owner

Group permissions

awk

directory 2048 kuitche No permission to read, write or execute

bin.doc

regular file 808 kuitche No permission to read, write or execute

junk

directory 2048 kuitche has permissin to read, write and execute

this.dir

regular file 21504 kuitche   has permissin to read, write and execute

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.