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Write a shell program to display the position of the right - most character in a given input string.

Example :
Input : RAHUL
Output : L is in the 5th position


also tell me how to count...

Write a shell program to display the position of the right - most character in a given input string.

Example :
Input : RAHUL
Output : L is in the 5th position


also tell me how to count...

To start printing a file at line " n" .
let n = 10 and FileName = f1

Write a shell program to replace the starting alphabet "a" with "k" for the file names in the current directory.

Note : Change only the file names starting with "a". Rest of the file names remains...

if
file1:
1
2
3

file2:
4
5
6

then
cat file1 >> file2 is generating
1
2
3
4
5
6

The file1 >> file2 is generating
1
2
3
4
5
6

and file2 >> file is generating
4
5
6
1
2
3

which i asked in question.
The content of file2 should be appended with the content of...

You are almost right

but as i tried it should be:
cat file2 >> file1

thanks

how to append the contents of filel to the contents of file2?.

i.e.

file1:
1
2
3

file2:
4
5
6

then the file2 shoud be
4
5
6
1
2