Extract text From Shared Memory & Print it in Uppercase

PROGRAM: 

#include<sys/types.h>

#include<sys/ipc.h>

#include<sys/msg.h>

#include<sys/shm.h>

#include<unistd.h>

#include<stdio.h>

#include<sys/stat.h>

#include<string.h>

main()

{

int shmid,i;

char *pa,a[1000];

shmid=shmget((key_t)1300,1024,0600|IPC_CREAT);

if(shmid==-1)

{printf("shmget failed");

return;

}

pa=(char*)shmat(shmid,0,0);

if(pa==(void *)-1)

{

printf("shmat failed");

return;

}

for(i=0;pa[i]!='\0';i++)

{

if(pa[i]>='a'&&pa[i]<='z')

pa[i]=pa[i]-32;

else

continue;

}

printf("\nUppercase Message : %s",pa);

}

OUTPUT:

[user @localhost ~]$ cc umgsh.c

[user @localhost ~]$ ./a.out

Uppercase Message : MESSAGE STORED IN SHARED MEMORY

SHARED MEMORY PROGRAMS

[user @localhost ~]$

Storing Lower case Message in Shared Memory-I

#include<sys/types.h>

#include<sys/ipc.h>

#include<sys/msg.h>

#include<sys/shm.h>

#include<unistd.h>

#include<stdio.h>

#include<sys/stat.h>

#include<string.h>

main()

{

int shmid,i;

char *pa,a[1000];

shmid=shmget((key_t)1300,1024,0600|IPC_CREAT);

if(shmid==-1)

{printf("shmget failed");

return;

}

pa=(char*)shmat(shmid,0,0);

if(pa==(void *)-1)

{

printf("shmat failed");

return;

}

printf("Enter text&press$to terminate\n");

for(i=0;(a[i]=getchar())!='$';i++);

a[i]='\0';

strcpy(pa,a);

printf("The given text is placed into shared memory\n");

}

OUTPUT

[user@localhost ~]$ cc mgsh.c

[user @localhost ~]$ ./a.out

Enter text&press$to terminate

Message stored in shared memory

shared memory programs$

The given text is placed into shared memory

[user @localhost ~]$ 

MarkSheet Preparation Using SharedMemory –II

 PROGRAM:

#include<sys/types.h>

#include<sys/ipc.h>

#include<sys/msg.h>

#include<sys/shm.h>

#include<unistd.h>

#include<stdio.h>

#include<sys/stat.h>

#include<string.h>

struct stud

{char name[25];

int roll,m1,m2,m3,tot;

float avg;

};

main()

{struct stud m,*p;

p=&m;

int shmid;

shmid=shmget((key_t)1300,1024,0660|IPC_CREAT);

if(shmid==-1)

{printf("shmget failed");

return;

}

p=(struct stud *)shmat(shmid,0,0);

if(p==(void *)-1)

{printf("shmat failed");

return;

}

p->tot=p->m1+p->m2+p->m3;

p->avg=(float)p->tot/3.0;

printf("\nNAME: %s",p->name);

printf("\nROLLNO:%d",p->roll);

printf("\nMARK1:%d",p->m1);

printf("\nMARK@:%d",p->m2);

printf("\nMARK#:%d",p->m3);

printf("\nTOTAL:%d",p->tot);

printf("\nAVERAGE:%f",p->avg);

}

OUTPUT:

[user @localhost ~]$ cc cmarsh.c

[user @localhost ~]$ ./a.out

NAME: Kannan

ROLLNO:987

MARK1:89

MARK@:98

MARK#:78

TOTAL:265

AVERAGE:88.333336[user @localhost ~]$

MarkSheet Preparation Using SharedMemory –I

PROGRAM:

#include<sys/types.h>

#include<sys/ipc.h>

#include<sys/shm.h>

#include<unistd.h>

#include<stdio.h>

#include<sys/stat.h>

#include<string.h>

struct stud

{

char name[25];

int roll,m1,m2,m3,tot;

float avg;

};

main()

{

struct stud m,*p;

p=&m;

int shmid;

shmid=shmget((key_t)1300,1024,0600|IPC_CREAT);

if(shmid==-1)

{printf("shmget failed");

return;

}

p=(struct stud *)shmat(shmid,0,0);

if(p==(void *)-1)

{

printf("shmat failed");

return;

}

printf("Enter the name:\n");

scanf("%s",p->name);

printf("Enter the Roll.No:\n");

scanf("%d",&p->roll);

printf("Enter the marks  got in 3 subject: \n");

scanf("%d%d%d",&p->m1,&p->m2,&p->m3);

printf("\nThe given information is placed in shared memory\n");

}

OUTPUT:

[user @localhost ~]$ cc marsh.c

[user @localhost ~]$ ./a.out

Enter the name:

Kannan

Enter the Roll.No:

987

Enter the marks  got in 3 subject:

89 98 78

The given information is placed in shared memory

[user @localhost ~]$

Length of the string using Shared Memory-II

Program:

#include<sys/types.h>

#include<sys/ipc.h>

#include<sys/msg.h>

#include<sys/shm.h>

#include<unistd.h>

#include<stdio.h>

#include<sys/stat.h>

#include<string.h>

main()

{

int shmid,i,len;

char *pa,a[1000];

shmid=shmget((key_t)1300,1024,0600|IPC_CREAT);

if(shmid==-1)

{printf("shmget failed");

return;

}

pa=(char*)shmat(shmid,0,0);

if(pa==(void *)-1)

{

printf("shmat failed");

return;

}

len=strlen(pa);

printf("\nThe length of the text is : %d\n",len);

}

OUTPUT:

[user @localhost ~]$ cc lenshm.c

[user @localhost ~]$ ./a.out

The length of the text is : 54

[user @localhost ~]$

Length of the string using Shared Memory

Program

#include<sys/types.h>

#include<sys/ipc.h>

#include<sys/msg.h>

#include<sys/shm.h>

#include<unistd.h>

#include<stdio.h>

#include<sys/stat.h>

#include<string.h>

main()                 

{

int shmid,i;

char *pa,a[1000];

shmid=shmget((key_t)1300,1024,0600|IPC_CREAT);

if(shmid==-1)

{printf("shmget failed");

return;

}

pa=(char*)shmat(shmid,0,0);

if(pa==(void *)-1)

{

printf("shmat failed");

return;

}

printf("Enter text&press$to terminate\n");

for(i=0;(a[i]=getchar())!='$';i++);

a[i]='\0';

strcpy(pa,a);

printf("The given text is placed into shared memory\n");

}

OutPut

[user@localhost ~]$ cc mgsh.c

[user @localhost ~]$ ./a.out

Enter text&press$to terminate

Message stored in shared memory

shared memory programs$

The given text is placed into shared memory

[user @localhost ~]$ 

SHELL SCRIPT TO COPY ONE FILE TO ANOTHER FILE

COPY ONE FILE TO ANOTHER FILE:

echo "copying one file to another"

if [ $# -eq 4 ]

then

   cp $3 $1

   cp $4 $2

 fi

OUTPUT:

[@localhost ~]$ cat f3

hai this is rajasekar

[@localhost ~]$ cat f4

i did my pg in nmc

[@localhost ~]$ sh copy.sh f1 f2 f3 f4

copying one file to another

[@localhost ~]$ cat f1

hai this is rajasekar

[@localhost ~]$ cat f2

i did my pg in nmc

SHELL SCRIPT TO REMOVE THE LINES IN A GIVEN PATTERN

REMOVE THE LINES IN A GIVEN PATTERN:

echo "Enter file name"

read file

echo "Enter pattern"

read pat

grep -v $pat $file

OUTPUT:

[@localhost ~]$ sh pattern.sh

Enter file name

raja

Enter pattern

did

HAI I AM RAJASEKAR

I DID MY STUDIES IN NMC

I COMPLEATED MY PG DEGREE IN MBA AND MCA

I AM ALWAYS BE A OVER-CONFIDENT PERSON

THEN ONLY LEADS TO VERY SUCCESSFULL MANNER

[@localhost ~]$ sh pattern.sh

Enter file name

raja

Enter pattern

COMPLEATED

HAI I AM RAJASEKAR

I DID MY STUDIES IN NMC

I AM ALWAYS BE A OVER-CONFIDENT PERSON

THEN ONLY LEADS TO VERY SUCCESSFULL MANNER

[@localhost ~]$ sh pattern.sh

Enter file name

raja

Enter pattern

I

THEN ONLY LEADS TO VERY SUCCESSFULL MANNER

SHELL SCRIPT TO PAYBILL PREPARATION

PAYBILL PREPARATION:

 echo -e "\tPAYBILL CALCULATION"

echo -e "\t~~~~~~~~~~~~~~~~~~~~"

echo -e "\tenter the n value"

read n

echo -e "\tenter name id salary"

for((i=1;i<=n;i++))

do

`read name id salary

echo -e "\tbefore calculation"

echo -e "\t***********************"

echo -e "\tname\t:$name\n\tid\t:$id\n\tsalary\t:$salary"

echo -e "\t***********************"

echo -e "\t calculation part"

if [ $salary -lt 10000 ]

then

lic=`expr $salary*0.05|bc`

echo -e "\n\tlic:\t"$lic

pf=`expr $salary*0.03|bc`

echo -e "\n\tpf:\t"$pf

ded=`expr $lic+$pf|bc`

echo -e "\n\tded:\t"$ded

hra=`expr $salary*0.03|bc`

echo -e "\n\thra:\t"$hra

da=`expr $salary*0.08|bc`

echo -e "\n\tda:\t"$da

add=`expr $hra+$da|bc`

echo -e "\n\tadd:\t"$add

gpay=`expr $salary-$ded|bc`

echo -e "\n\tgpay:\t"$gpay

npay=`expr $gpay+$add|bc`

echo -e "\n\tnpay:\t"$npay

echo -e "\n\tafter calculation"

echo -e "\n\t*********************"

echo -e "\n\tname\t:$name\n\tid\t:$id\n\tnetpay\t:$npay"

echo -e "\n\t***********************"

else

lic=`expr $salary*0.05|bc`

echo -e "\n\tlic:\t"$lic

pf=`expr $salary*0.03|bc`

echo -e "\n\tpf:\t"$pf

ded=`expr $lic+$pf|bc`

echo -e "\n\tded:\t"$ded

hra=`expr $salary*0.03|bc`

echo -e "\n\thra:\t"$hra

da=`expr $salary*0.08|bc`

echo -e "\n\tda:\t"$da

add=`expr $hra+$da|bc`

echo -e "\n\tadd:\t"$add

gpay=`expr $salary-$ded|bc`

echo -e "\n\tgpay:\t"$gpay

npay=`expr $gpay+$add|bc`

echo -e "\n\tnpay:\t"$npay

echo -e "\n\tafter calculation"

echo -e "\n\t*********************"

echo -e "\n\tname\t:$name\n\tid\t:$id\n\tnetpay\t:$npay"

echo -e "\n\t***********************"

fi

done

OUTPUT:

[@localhost ~]$ sh paybill.sh

        PAYBILL CALCULATION

        ~~~~~~~~~~~~~~~~~~~~

        enter the n value

2- INSERT --

        enter name id salary

rajasekar 324 100000

        before calculation

        ***********************

        name    :rajasekar

        id      :324

        salary  :100000

        ***********************

         calculation part

        lic:    5000.00

        pf:     3000.00

        ded:    8000.00

        hra:    3000.00

        da:     8000.00

        add:    11000.00

        gpay:   92000.00

        npay:   103000.00

        after calculation

        *********************

        name    :rajasekar

        id      :324

        netpay  :103000.00

        ***********************

SHELL SCRIPT TO COMPARE TWO FILE

COMPARE TWO FILE:

cmp $1 $2

if [ $? -eq 0 ]

then

echo "Both files are EQUAL"

else

echo "Both files are NOTEQUAL"

fi

OUTPUT:

[@localhost ~]$ ls

acceptlogin.sh  current.sh     file1.sh     mark.sh  pol        totaldir.sh

add.sh          dcurrent.sh    file1.txt    new1.c   pol.sh     tri.sh

a.out           eletricity.sh  file2.txt    new1.sh  raj        userlog

big.sh          fact           fileper      new.c    raja.c     userlog.sh

big.shwq        fact.sh        fileper.sh   op.sh    series.sh  x.txt

com.sh          fib.sh         firstlet.sh  per.sh   subdir.sh  y.txt

[@localhost ~]$ sh com.sh fib.sh fact.sh

fib.sh fact.sh differ: byte 1, line 1

Both files are NOTEQUAL

[@localhost ~]$

SHELL SCRIPT FOR FIBONACCI SERIES

FIBNOCIS SERIES:

echo "Enter choice="

read n

fib1=0

fib2=1

echo "The series are=$fib1 $fib2"

for ((i=0; $i<$n; i=`expr $i + 1|bc`))

do

fib3=`expr $fib1 + $fib2 |bc`

fib1=$fib2

fib2=$fib3

echo "$fib3"

done

OUTPUT:

 [@localhost ~]$ sh fib.sh

Enter choice=

10

The series are=0 1

1

2

3

5

8

13

21

34

55

89

[@localhost ~]$