OS-Linux-commands-Shell-scripting

Operating systems Lab exercise

Linux commands-Shell scripting

Linux commands-Shell scripting

Developed By: Nandhakumar G R

Reg.NO: 212222100029

AIM:

To practice Linux Commands and Shell Scripting

DESIGN STEPS:

Step 1:

Navigate to any Linux environment installed on the system or installed inside a virtual environment like virtual box/vmware or online linux JSLinux (https://bellard.org/jslinux/vm.html?url=alpine-x86.cfg&mem=192) or docker.

Step 2:

Execute the following commands

Step 3:

Testing the commands for the desired output.

COMMANDS:

Create the following files file1, file2 as follows:

cat > file1

chanchal singhvi
c.k. shukla
s.n. dasgupta
sumit chakrobarty
^d

cat > file2

anil aggarwal
barun sengupta
c.k. shukla
lalit chowdury
s.n. dasgupta
^d

Display the content of the files

cat < file1

OUTPUT

chanchal singhvi
c.k. shukla
s.n. dasgupta
sumit chakrobarty
^d

cat < file2

OUTPUT

cat > file2

anil aggarwal
barun sengupta
c.k. shukla
lalit chowdury
s.n. dasgupta
^d

Comparing Files

cmp file1 file2

OUTPUT

file1 file2 differ: char 1, line 1

comm file1 file2

OUTPUT

        anil aggarwal
        barun sengupta
        c.k. shukla
chanchal singhvi
c.k. shukla
        lalit chowdury
                s.n. dasgupta
 
sumit chakrobarty

diff file1 file2

OUTPUT

--- file1
+++ file2
@@ -1,4 +1,6 @@
-chanchal singhvi
+anil aggarwal
+barun sengupta
 c.k. shukla
+lalit chowdury
 s.n. dasgupta
-sumit chakrobarty
+

#Filters

Create the following files file11, file22 as follows:

cat > file11

Hello world
This is my world
^d

cat > file22

1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
^d

cut -c1-3 file11

OUTPUT

Hel
Thi

cut -d "|" -f 1 file22

OUTPUT

1001
1002
1003

cut -d "|" -f 2 file22

OUTPUT

 Ram
 tom
 Joe

cat < newfile

Hello world
hello world
^d

cat > newfile Hello world hello world

grep Hello newfile

OUTPUT

Hello world

grep hello newfile

OUTPUT

hello world

grep -v hello newfile

OUTPUT

Hello world

cat newfile | grep -i "hello"

OUTPUT

Hello world
hello world

cat newfile | grep -i -c "hello"

OUTPUT

2

grep -w -n world newfile

OUTPUT

1:Hello world
2:hello world

cat < newfile

Hello world
hello world
Linux is world number 1
Unix is predecessor
Linux is best in this World
^d

cat > newfile

Hello world
hello world
Linux is world number 1
Unix is predecessor
Linux is best in this World
^d

egrep -w 'Hello|hello' newfile

OUTPUT

Hello world
hello world

egrep -w '(H|h)ello' newfile

OUTPUT

Hello world
hello world

egrep -w '(H|h)ell[a-z]' newfile

OUTPUT

Hello world
hello world

egrep '(^hello)' newfile

OUTPUT

hello world

egrep '(world$)' newfile

OUTPUT

Hello world
hello world

egrep '(World$)' newfile

OUTPUT

Linux is best in this World

egrep '((W|w)orld$)' newfile

OUTPUT

Hello world
hello world
Linux is best in this World

egrep '[1-9]' newfile

OUTPUT

Linux is world number 1

egrep 'Linux.*world' newfile

OUTPUT

Linux is world number 1

egrep 'Linux.*World' newfile

OUTPUT

Linux is best in this World

egrep l{2} newfile

OUTPUT

Hello world
hello world

egrep 's{1,2}' newfile

OUTPUT

Linux is world number 1
Unix is predecessor
Linux is best in this World

cat > file23

1001 | Ram | 10000 | HR
1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev
1003 | Joe |  7000 | Developer
1001 | Ram | 10000 | HR
^d

sed -n -e '3p' file23

OUTPUT

1002 | tom |  5000 | Admin

sed -n -e '$p' file23

OUTPUT

1001 | Ram | 10000 | HR

sed -e 's/Ram/Sita/' file23

OUTPUT

1001 | Sita | 10000 | HR
1001 | Sita | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev
1003 | Joe |  7000 | Developer
1001 | Sita | 10000 | HR

sed -e '2s/Ram/Sita/' file23

OUTPUT

1001 | Ram | 10000 | HR
1001 | Sita | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev
1003 | Joe |  7000 | Developer
1001 | Ram | 10000 | HR

sed '/tom/s/5000/6000/' file23

OUTPUT

1001 | Ram | 10000 | HR
1001 | Ram | 10000 | HR
1002 | tom |  6000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev
1003 | Joe |  7000 | Developer
1001 | Ram | 10000 | HR

sed -n -e '1,5p' file23

OUTPUT

1001 | Ram | 10000 | HR
1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR

sed -n -e '2,/Joe/p' file23

OUTPUT

1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer

sed -n -e '/tom/,/Joe/p' file23

OUTPUT

1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer

seq 10

OUTPUT

1
2
3
4
5
6
7
8
9
10

seq 10 | sed -n '4,6p'

OUTPUT

4
5
6

seq 10 | sed -n '2,~4p'

OUTPUT

sed: no address after comma

seq 3 | sed '2a hello'

OUTPUT

1
2
hello
3

seq 2 | sed '2i hello'

OUTPUT

1
hello
2

seq 10 | sed '2,9c hello'

OUTPUT

1
hello
10

sed -n '2,4{s/^/$/;p}' file23

OUTPUT

$1001 | Ram | 10000 | HR
$1002 | tom |  5000 | Admin
$1003 | Joe |  7000 | Developer

sed -n '2,4{s/$/*/;p}' file23

OUTPUT

1001 | Ram | 10000 | HR*
1002 | tom |  5000 | Admin*
1003 | Joe |  7000 | Developer*

#Sorting File content cat > file21

1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev

sort file21

OUTPUT

1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1004 | Sit |  7000 | Dev
1005 | Sam |  5000 | HR

cat > file22

1001 | Ram | 10000 | HR
1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev

uniq file22

OUTPUT

1001 | Ram | 10000 | HR
1002 | tom |  5000 | Admin
1003 | Joe |  7000 | Developer
1005 | Sam |  5000 | HR
1004 | Sit |  7000 | Dev

#Using tr command

cat file23 | tr [:lower:] [:upper:]

OUTPUT

1001 | RAM | 10000 | HR
1001 | RAM | 10000 | HR
1002 | TOM |  5000 | ADMIN
1003 | JOE |  7000 | DEVELOPER
1005 | SAM |  5000 | HR
1004 | SIT |  7000 | DEV
1003 | JOE |  7000 | DEVELOPER
1001 | RAM | 10000 | HR

cat < urllist.txt

www. yahoo. com
www. google. com
www. mrcet.... com
^d

cat > urllist.txt

www. yahoo. com
www. google. com
www. mrcet.... com

cat urllist.txt | tr -d ' '

OUTPUT

www.yahoo.com
www.google.com
www.mrcet....com

cat urllist.txt | tr -d ' ' | tr -s '.'

OUTPUT

www.yahoo.com
www.google.com
www.mrcet.com

#Backup commands tar -cvf backup.tar *

OUTPUT

bench.py
file21
file22
file23
hello.c
hello.js
newfile
readme.txt
urllist.txt

mkdir backupdir

mv backup.tar backupdir

tar -tvf backup.tar

OUTPUT

tar: can't open 'backup.tar': No such file or directory

tar -xvf backup.tar

OUTPUT

tar: can't open 'backup.tar': No such file or directory

gzip backup.tar

ls .gz

OUTPUT

gunzip backup.tar.gz

OUTPUT

Shell Script

echo '#!/bin/sh' > my-script.sh
echo 'echo Hello World‘; exit 0 >> my-script.sh

chmod 755 my-script.sh ./my-script.sh

OUTPUT

hello in this world
i ccant stop
for this non stop movement
stop

cat << stop > herecheck.txt

hello in this world
i cant stop
for this non stop movement
stop

cat herecheck.txt

OUTPUT

hello in this world
i cant stop
for this non stop movement

cat < scriptest.sh

\#!/bin/sh
echo “File name is $0 ”
echo "File name is " `basename $0`
echo “First arg. is ” $1
echo “Second arg. is ” $2
echo “Third arg. is ” $3
echo “Fourth arg. is ” $4
echo 'The $@ is ' $@
echo 'The $\# is ' $1#
echo 'The $$ is ' $$
ps
^d

cat scriptest.sh

\#!/bin/sh
echo “File name is $0 ”
echo "File name is " `basename $0`
echo “First arg. is ” $1
echo “Second arg. is ” $2
echo “Third arg. is ” $3
echo “Fourth arg. is ” $4
echo 'The $@ is ' $@
echo 'The $\# is ' $\#
echo 'The $$ is ' $$
ps

chmod 777 scriptest.sh

./scriptest.sh 1 2 3

OUTPUT

./scriptest.sh: line 1: #!/bin/sh: No such file or directory
“File name is ./scriptest.sh ”
File name is  scriptest.sh
“First arg. is ” 1
“Second arg. is ” 2
“Third arg. is ” 3
“Fourth arg. is ”
The $@ is  1 2 3
The $\# is  1#
The $$ is  14337
    PID TTY          TIME CMD
  13614 pts/1    00:00:00 bash
  14337 pts/1    00:00:00 bash
  14340 pts/1    00:00:00 ps

ls file1

Output

file1

echo $?

OUTPUT

0

echo $?

OUTPUT

1

./one bash: ./one: Permission denied

echo $?

OUTPUT

0

abcd

echo $?

OUTPUT

127

mis-using string comparisons

cat < strcomp.sh

\#!/bin/bash
val1=baseball
val2=hockey
if [ $val1 \> $val2 ]
then
echo "$val1 is greater than $val2"
else
echo "$val1 is less than $val2"
fi
^d

cat strcomp.sh

\#!/bin/bash
val1=baseball
val2=hockey
if [ $val1 \> $val2 ]
then
echo "$val1 is greater than $val2"
else
echo "$val1 is less than $val2"
fi

##OUTPUT

baseball is less than hockey

chmod 755 strcomp.sh

./strcomp.sh

OUTPUT

You are the owner of the /etc/passwd file

check file ownership

cat < psswdperm.sh

\#!/bin/bash
if [ -O /etc/passwd ]
then
echo “You are the owner of the /etc/passwd file”
else
echo “Sorry, you are not the owner of the /etc/passwd file”
fi
^d

cat psswdperm.sh

/#!/bin/bash
if [ -O /etc/passwd ]
then
echo “You are the owner of the /etc/passwd file”
else
echo “Sorry, you are not the owner of the /etc/passwd file”
fi

./psswdperm.sh

OUTPUT

"/root The object exists, is it a file?"
"No,/root it is not a file!"

check if with file location

cat>ifnested.sh

\#!/bin/bash
if [ -e $HOME ]
then
echo “$HOME The object exists, is it a file?”
if [ -f $HOME ]
then
echo “Yes,$HOME it is a file!”
else
echo “No,$HOME it is not a file!”
if [ -f $HOME/.bash_history ]
then
echo “But $HOME/.bash_history is a file!”
fi
fi
else
echo “Sorry, the object does not exist”
fi
^d

cat ifnested.sh

\#!/bin/bash
if [ -e $HOME ]
then
echo “$HOME The object exists, is it a file?”
if [ -f $HOME ]
then
echo “Yes,$HOME it is a file!”
else
echo “No,$HOME it is not a file!”
if [ -f $HOME/.bash_history ]
then
echo “But $HOME/.bash_history is a file!”
fi
fi
else
echo “Sorry, the object does not exist”
fi

./ifnested.sh

OUTPUT

“/home/sec The object exists, is it a file?”
“No,/home/sec it is not a file!”
“But /home/sec/.bash_history is a file!”

using numeric test comparisons

cat > iftest.sh

\#!/bin/bash
val1=10
val2=11
if [ $val1 -gt 5 ]
then
echo “The test value $val1 is greater than 5”
fi
if [ $val1 -eq $val2 ]
then
echo “The values are equal”
else
echo “The values are different”
fi
^d

cat iftest.sh

\#!/bin/bash
val1=10
val2=11
if [ $val1 -gt 5 ]
then
echo “The test value $val1 is greater than 5”
fi
if [ $val1 -eq $val2 ]
then
echo “The values are equal”
else
echo “The values are different”
fi

$ chmod 755 iftest.sh

$ ./iftest.sh

OUTPUT

“The test value 10 is greater than 5”
“The values are different”

check if a file

cat > ifnested.sh

\#!/bin/bash
if [ -e $HOME ]
then
echo “$HOME The object exists, is it a file?”
if [ -f $HOME ]
then
echo “Yes,$HOME it is a file!”
else
echo “No,$HOME it is not a file!”
if [ -f $HOME/.bash_history ]
then
echo “But $HOME/.bash_history is a file!”
fi
fi
else
echo “Sorry, the object does not exist”
fi
^d

cat ifnested.sh

\#!/bin/bash
if [ -e $HOME ]
then
echo “$HOME The object exists, is it a file?”
if [ -f $HOME ]
then
echo “Yes,$HOME it is a file!”
else
echo “No,$HOME it is not a file!”
if [ -f $HOME/.bash_history ]
then
echo “But $HOME/.bash_history is a file!”
fi
fi
else
echo “Sorry, the object does not exist”
fi

$ chmod 755 ifnested.sh

$ ./ifnested.sh

OUTPUT

“/home/sec The object exists, is it a file?”
“No,/home/sec it is not a file!”
“But /home/sec/.bash_history is a file!”

looking for a possible value using elif

cat elifcheck.sh

\#!/bin/bash
if [ $USER = Ram ]
then
echo "Welcome $USER"
echo "Please enjoy your visit"
elif [ $USER = Rahim ]
then
echo "Welcome $USER"
echo "Please enjoy your visit"
elif [ $USER = Robert ]
then
echo "Special testing account"
elif [ $USER = gganesh ]
then
echo "$USER, Do not forget to logout when you're done"
else
echo "Sorry, you are not allowed here"
fi

$ chmod 755 elifcheck.sh

$ ./elifcheck.sh

OUTPUT

./elifcheck.sh: line 1: #!/bin/bash: No such file or directory
Sorry, you are not allowed here

testing compound comparisons

cat> ifcompound.sh

\#!/bin/bash
if [ -d $HOME ] && [ -w $HOME ]
then
echo "The file exists and you can write to it"
else
echo "I cannot write to the file"
fi

$ chmod 755 ifcompound.sh $ ./ifcompound.sh

OUTPUT

./ifcompound.sh: line 1: #!/bin/bash: No such file or directory
The file exists and you can write to it

using the case command

cat >casecheck.sh

case $USER in
Ram | Robert)
echo "Welcome, $USER"
echo "Please enjoy your visit";;
Rahim)
echo "Special testing account";;
gganesh)
echo "$USER, Do not forget to log off when you're done";;
*)
echo "Sorry, you are not allowed here";;
esac

$ chmod 755 casecheck.sh

$ ./casecheck.sh

Output

Sorry, you are not allowed here

cat > whiletest

#!/bin/bash
#while command test
var1=10
while [ $var1 -gt 0 ]
do
echo $var1
var1=$[ $var1 - 1 ]
done

$ chmod 755 whiletest.sh

$ ./whiletest.sh

Output

10
9
8
7
6
5
4
3
2
1

cat untiltest.sh

\#using the until command
var1=100
until [ $var1 -eq 0 ]
do
echo $var1
var1=$[ $var1 - 25 ]
done

$ chmod 755 untiltest.sh $./untiltest.sh

Output

./untiltest.sh: line 1: #using: command not found
100
75
50
25

cat forin1.sh

\#!/bin/bash
\#basic for command
for test in Alabama Alaska Arizona Arkansas California Colorado
do
echo The next state is $test
done

$ chmod 755 forin1.sh

$ ./forin1.sh

Output

./forin1.sh: line 1: #!/bin/bash: No such file or directory
./forin1.sh: line 2: #basic: command not found
The next state is Alabama
The next state is Alaska
The next state is Arizona
The next state is Arkansas
The next state is California
The next state is Colorado

cat forin2.sh

\#!/bin/bash
\# another example of how not to use the for command
for test in I don't know if this'll work
do
echo “word:$test”
done

$ chmod 755 forin2.sh

cat forin2.sh

\#!/bin/bash
\# another example of how not to use the for command
for test in I don't know if this'll work
do
echo “word:$test”
done

$ chmod 755 forin2.sh

$ ./forin2.sh

Output

“word:I”
“word:dont know if thisll”
“word:work”

cat forin3.sh

\#!/bin/bash
\# another example of how not to use the for command
for test in I don\'t know if "this'll" work
do
echo "word:$test"
done

$ ./forin3.sh

Output

word:I
word:don't
word:know
word:if
word:this'll
word:work

cat forin1.sh

#!/bin/bash
# basic for command
for test in Alabama Alaska Arizona Arkansas California Colorado
do
echo The next state is $test
done

$ chmod 755 forin1.sh

./forin1.sh

OUTPUT

The next state is Alabama
The next state is Alaska
The next state is Arizona
The next state is Arkansas
The next state is California
The next state is Colorado

cat forinfile.sh

#!/bin/bash
# reading values from a file
file="cities"
for state in `cat $file`
do
echo "Visit beautiful $file“
done

$ chmod 777 forinfile.sh $ cat cities Hyderabad Alampur Basara Warangal Adilabad Bhadrachalam Khammam

OUTPUT

Visit beautiful cities
Visit beautiful cities
Visit beautiful cities
Visit beautiful cities
Visit beautiful cities
Visit beautiful cities
Visit beautiful cities

cat forctype.sh

#!/bin/bash
# testing the C-style for loop
for (( i=1; i <= 5; i++ ))
do
echo "The value of i is $i"
done

$ chmod 755 forctype.sh $ ./forctype.sh

OUTPUT

The value is i is 1
The value is i is 2
The value is i is 3
The value is i is 4
The value is i is 5

cat forctype1.sh

#!/bin/bash
# multiple variables
for (( a=1, b=5; a <= 5; a++, b-- ))
do
echo "$a - $b"
done

$ chmod 755 forctype.sh $ ./forctype1.sh

OUTPUT

1 - 5
2 - 4
3 - 3
4 - 2
5 - 1

cat fornested1.sh

#!/bin/bash
# nesting for loops
for (( a = 1; a <= 3; a++ ))
do
echo "Starting loop $a:"
for (( b = 1; b <= 3; b++ ))
do
echo " Inside loop: $b"
done
done

$ chmod 755 fornested1.sh

$ ./fornested1.sh

OUTPUT

Starting loop 1:
 Inside loop: 1
 Inside loop: 2
 Inside loop: 3
Starting Loop 2:
 Inside loop: 1
 Inside loop: 2
 Inside loop: 3
Starting Loop 3:
 Inside loop: 1
 Inside loop: 2
 Inside loop: 3

cat forbreak.sh

#!/bin/bash
# breaking out of a for loop
for var1 in 1 2 3 4 5
do
if [ $var1 -eq 3 ]
then
break
fi
echo "Iteration number: $var1"
done
echo "The for loop is completed“

OUTPUT

Iteration number: 1
Iteration number: 2
The for loop is completed

$ chmod 755 forbreak.sh

$ ./forbreak.sh

cat forbreak.sh

#!/bin/bash
# breaking out of a for loop
for var1 in 1 2 3 4 5
do
if [ $var1 -eq 3 ]
then
continue
fi
echo "Iteration number: $var1"
done
echo "The for loop is completed“

$ chmod 755 forcontinue.sh

$ ./forcontinue.sh

OUTPUT

cat exread.sh

#!/bin/bash
# testing the read command
echo -n "Enter your name: "
read name
echo "Hello $name, welcome to my program. "

$ chmod 755 exread.sh

$ ./exread.sh

OUTPUT

Enter your name: Karthikeyan
Hello Karthikeyan, welcome to my program. 

cat exread1.sh

#!/bin/bash
# testing the read command
read -p "Enter your name: " name
echo "Hello $name, welcome to my program. “

$ chmod 755 exread1.sh

OUTPUT

Enter your name: Karthikeyan
Hello Karthikeyan, welcome to my program. 

$ ./exread1.sh

cat funcex.sh

#!/bin/bash
# trying to access script parameters inside a function
function func {
echo $[ $1 * $2 ]
}
if [ $# -eq 2 ]
then
value=`func $1 $2`
echo "The result is $value"
else
echo "Usage: badtest1 a b"
fi

OUTPUT

./funcex.sh

Usage: badtest1 a b

./funcex.sh 1 2

The result is 2

cat argshift.sh

#!/bin/bash 
 while (( "$#" )); do 
  echo $1 
  shift 
done

$ chmod 777 argshift.sh

OUTPUT

$ ./argshift.sh 1 2 3

1
2
3

cat argshift1.sh

 #/bin/bash 
 # store arguments in a special array 
args=("$@") 
# get number of elements 
ELEMENTS=${#args[@]} 
 # echo each element in array  
# for loop 
for (( i=0;i<$ELEMENTS;i++)); do 
    echo ${args[${i}]} 
done

$ chmod 777 argshift.sh

OUTPUT

$ ./argshift.sh 1 2 3

1
2
3

cat argshift.sh

#!/bin/bash 
set -x 
while (( "$#" )); do 
  echo $1 
  shift 
done
set +x

./argshift.sh 1 2 3

OUTPUT

+ ((  3  ))
+ echo 1 
1
+ shift
+ ((  2  ))
+ echo 2
2
+ shift
+ ((  1  ))
+ echo 3
+ shift
+ ((  0  ))
+ set +x

cat > nc.awk

BEGIN{}
{
print len=length($0),"\t",$0 
wordcount+=NF
chrcnt+=len
}
END {
print "total characters",chrcnt 
print "Number of Lines are",NR
print "No of Words count:",wordcount
}

cat>data.dat

bcdfghj
abcdfghj
bcdfghj
ebcdfghj
bcdfghj
ibcdfghj
bcdfghj
obcdfghj
bcdfghj
ubcdfghj

awk -f nc.awk data.dat

OUTPUT

7         bcdfghj
8	  abcdfghj
7	  bcdfghj
8  	  ebcdfghj
7	  bcdfghhj
8	  ibcdfghj
7	  bcdfghj
8	  obcdfghj
7	  bcdfghj
8 	  ubcdfghj
total characters 75
Number of Lines are 10
No of Words count: 10

cat > palindrome.sh

#num=545
echo "Enter the number"
read num
s=0
rev=""
temp=$num
while [ $num -gt 0 ]
do
	# Get Remainder
	s=$(( $num % 10 ))
	# Get next digit
	num=$(( $num / 10 ))
	# Store previous number and
	# current digit in reverse
	rev=$( echo ${rev}${s} )
done
if [ $temp -eq $rev ];
then
	echo "Number is palindrome"
else
	echo "Number is NOT palindrome"
fi

OUTPUT

locathost:~# chmod 755 palindrome.sh
locathost:~# ./palindrome.sh
Enter the number
21
Number is NOT palindrome

locathost:~# chmod 755 palindrome.sh
locathost:~# ./palindrome.sh
Enter the number
33
Number is palindrome
locathost:~#

RESULT:

The Commands are executed successfully.