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 GET NO OF SUBDIRECTORY IN CURRENT DIRECTORY

ALL SUBDIRECTORY IN CURRENT DIRECTORY:

echo "to display all sub directory"

for i in *

do

if [ -d $i ]

then

echo $i "is an directory"

fi

done

OUTPUT:

[@localhost ~]$ sh subdirt.sh

to display all sub directory

123 is an directory

324@86 is an directory

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

        ***********************