Shell Programming and Scripting

 
1 int main() 
2  { 
3 int a,b; 
4    printf("Enter the values of a and b"); 
5      scanf("%d%d",&a,&b); 
6 if(a>b) 
7        printf("a is greater"); 
8   else 
9 printf("b is greater"); 
10 return(0); 
11  }

 
1 int main() 
2 { 
3 int a,b; 
4 printf("Enter the values of a and b"); 
5 scanf("%d%d",&a,&b); 
6 if(a>b) 
7 printf("a is greater"); 
8 else 
9 printf("b is greater"); 
10 return(0); 
11 }

$ perl -lape 's/^(\d+)\s*(.*?)\s*$/$1 $2/' infile

sed 's/\(\d*\)  */\1 /'

sed 's/\([^ ]*\) *\(.*\)/\1 \2/' file

 sed -e 's/\([^ ]\{1,\} \) */\1/' file