ITI

You enter the following command at the shell prompt:

seq 662 695 | grep 693 || echo 989

What is shown in the output?

Working with the bash, you issue the command: "chmod 376 file1". What are the resulting file permissions of file1?

Working with the bash, you want to show the content of files. Which command do you use?

Consider the following shell script named ”myscript”:

#!/bin/bash 
case "$1" in 
      ls|rm) 
            $1 "$0" 
            ;; 
      cp|mv) 
            "$1" "$0" "$2" 
            ;; 
      echo|mkdir) 
            "$2" "$0" "$1" 
            ;; 
      *) 
            "$0" ls 
            ;; 
esac

The current directory just contains the file ”myscript”. Now, the script is called like:

./myscript mkdir cp

When the script is finished, what has happend in the current directory?

Consider the following shell script named ”myscript”:

#!/bin/bash 
case "$1" in 
      ls|rm) 
            $1 "$0" 
            ;; 
      cp|mv) 
            "$1" "$0" "$2" 
            ;; 
      echo|mkdir) 
            "$2" "$0" "$1" 
            ;; 
      *) 
            "$0" ls 
            ;; 
esac

The current directory just contains the file ”myscript”. Now, the script is called like:

./myscript mkdir cp

What is written to STDOUT/STDERR during execution of the script?

Working with the bash, the current directory contains 5 files:

   f12   f65   f66179   f9   f96581

How many files are listed for each of the following commands?

ls  *?*?

Working with the bash, the current directory contains 5 files:

   f12   f65   f66179   f9   f96581

How many files are listed for each of the following commands?

ls  *?[2]

Working with the bash, the current directory contains 5 files:

   f12   f65   f66179   f9   f96581

How many files are listed for each of the following commands?

ls  ?

The file data.csv contains 10 comma-separated values per line, i.e. 10 columns like:

column 1,column 2,column 3,column 4,column 5,column 6,column 7,column 8,column 9,column 10

The following command is issued at the shell prompt:

sed -r 's/([^,]*),([^,]*),[^,]*,([^,]*),[^,]*,[^,]*,([^,]*)$/\1/' < data.csv

Which columns do match the regular expression?

The file data.csv contains 10 comma-separated values per line, i.e. 10 columns like:

column 1,column 2,column 3,column 4,column 5,column 6,column 7,column 8,column 9,column 10

The following command is issued at the shell prompt:

sed -r 's/([^,]*),([^,]*),[^,]*,([^,]*),[^,]*,[^,]*,([^,]*)$/\1/' < data.csv

Which columns are shown in the output?

Working with the bash, the command ls -l shows the following output:

-rwxrwx--- 10 q s 7239 2011-01-01 00:01 n

Does this listing show a file or a directory?

Working with the bash, the command ls -l shows the following output:

-rwxrwx--- 10 q s 7239 2011-01-01 00:01 n

Which user is the owner of the file/directory? (user name)

Working with the bash, the command ls -l shows the following output:

-rwxrwx--- 10 q s 7239 2011-01-01 00:01 n

Which group is associated with the file/directory? (group name)

Working with the bash, the command ls -l shows the following output:

-rwxrwx--- 10 q s 7239 2011-01-01 00:01 n

What is the name of the file/directory? (file/directory name)

Working with the bash, the command ls -l shows the following output:

-rwxrwx--- 10 q s 7239 2011-01-01 00:01 n

Does the owner have execute permissions?

Working with the bash, the command ls -l shows the following output:

-rwxrwx--- 10 q s 7239 2011-01-01 00:01 n

What is the size of the file/directory?

Consider the following shell script named ”myscript”:

#!/bin/bash 
V="$1" 
if [ $1 -lt 655 ]; then 
      echo $((V + 2)) 
else 
      echo "`ls`" 
fi

The current directory just contains the file ”myscript”. What is shown in the output when the script is called like:

./myscript 577

You enter the following command at the shell prompt:

seq 207 431 | grep 760 && echo 896

What is shown in the output?

Working with the bash, the shell variable v has been set to 173 (i.e., v=173). What is the output of the following commands?

echo  "$v"

Working with the bash, the shell variable v has been set to 173 (i.e., v=173). What is the output of the following commands?

echo  "\$v"

Working with the bash, the shell variable v has been set to 173 (i.e., v=173). What is the output of the following commands?

echo  $v

The size of a hard disk is specified by CHS=23246/14/61. The sector size is 512 bytes. What is the total size of the hard disk in bytes (numeric)?

Consider the typical root file system for GNU/Linux systems. Which statements apply?

Which are standard Linux file systems (including virtual file systems)?

Consider the MBR partitioning scheme. Which combinations of primary (P), extended (E), and logical (L) partitions are possible?

The following commands are successfully executed in the given order

mount /dev/sdc6 /mnt 
mount /dev/sdc2 /mnt/mnt 
mount /dev/sdc3 /mnt/mnt/mnt

Now, a file is copied to the directory /mnt. To which partition has the file been copied?

The following commands are successfully executed in the given order

mount /dev/sdc6 /mnt 
mount /dev/sdc2 /mnt/mnt 
mount /dev/sdc3 /mnt/mnt/mnt

Which directory exists for sure on partition /dev/sdc6?

The following commands are successfully executed in the given order

mount /dev/sdc6 /mnt 
mount /dev/sdc2 /mnt/mnt 
mount /dev/sdc3 /mnt/mnt/mnt

Which program is used to unmount file systems? (Answer - single word, no path)

A new hard disk (no high-level formatting) shows up in the system as /dev/sdd. After a GPT has been setup, the following command is executed successfully:

i=9; for j in 800 200 200 500 600; do parted /dev/sdd mkpart p$i $i $((i+j*10)); i=$((i+j*10)); done

Hint: For parted, the syntax of the sub-command mkpart is given by

mkpart PART-NAME START END

where PART-NAME is the name of the partition, and START/END give the start/end of the partition in MB.

How many partitions have been created?

A new hard disk (no high-level formatting) shows up in the system as /dev/sdd. After a GPT has been setup, the following command is executed successfully:

i=9; for j in 800 200 200 500 600; do parted /dev/sdd mkpart p$i $i $((i+j*10)); i=$((i+j*10)); done

Hint: For parted, the syntax of the sub-command mkpart is given by

mkpart PART-NAME START END

where PART-NAME is the name of the partition, and START/END give the start/end of the partition in MB.

Considering all calls to mkpart, what is the maximum difference between END and START (which is approximately the size of the largest partition in MB)?

A new hard disk (no high-level formatting) shows up in the system as /dev/sdd. After a GPT has been setup, the following command is executed successfully:

i=9; for j in 800 200 200 500 600; do parted /dev/sdd mkpart p$i $i $((i+j*10)); i=$((i+j*10)); done

Hint: For parted, the syntax of the sub-command mkpart is given by

mkpart PART-NAME START END

where PART-NAME is the name of the partition, and START/END give the start/end of the partition in MB.

After the command has been finished, what is the value of the shell variable i?

A new hard disk (no high-level formatting) shows up in the system as /dev/sdd. After a GPT has been setup, the following command is executed successfully:

i=9; for j in 800 200 200 500 600; do parted /dev/sdd mkpart p$i $i $((i+j*10)); i=$((i+j*10)); done

Hint: For parted, the syntax of the sub-command mkpart is given by

mkpart PART-NAME START END

where PART-NAME is the name of the partition, and START/END give the start/end of the partition in MB.

Which of the following files represents one of the created partitions?

A new hard disk (no high-level formatting) shows up in the system as /dev/sdd. After a GPT has been setup, the following command is executed successfully:

i=9; for j in 800 200 200 500 600; do parted /dev/sdd mkpart p$i $i $((i+j*10)); i=$((i+j*10)); done

Hint: For parted, the syntax of the sub-command mkpart is given by

mkpart PART-NAME START END

where PART-NAME is the name of the partition, and START/END give the start/end of the partition in MB.

Now that the partitions have been created, which command to execute next?

Consider the GPT partitioning scheme. Which statements are true?

Comparing the PC-BIOS and UEFI, which statements are true?

Which protocols are Application Layer protocols?

Which statements apply to broadcast networks?

Which statements apply to the layers of the TCP/IP model?

Which protocols are Transport Layer protocols?

In the context of layer models, which statements apply to protocols?