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Shell Programming and Scripting

How to produce a file by many files?

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Top Forums Shell Programming and Scripting How to produce a file by many files?
# 8  
Old 04-29-2009
yea the file missing is showing who is missing in the file, 20179687 is missing in the file Prac 3, so i need to print it to the file missing.
# 9  
Old 04-29-2009
oooo sorry i make wrong

20179687 Prac3
20781637 Prac2, Prac3
# 10  
Old 04-29-2009
can anyone please help me??

Thank you....
# 11  
Old 04-29-2009
i got something like this:

Code:
#!/bin/sh

cat Students |while read Student_ID
do 
	for(i=1; i -le 3; i++)
	cat Prac$i |while read ID
		if [ Student_ID -ne ID ]
		then
			if [Student_ID exist in file Missing]
			then
			echo ", Prac$i" >>Missing
			else
			echo "Student_ID: Prac$i" >>Missing
			fi
		fi
done

but it is not working, can someone please change it for me and how can i add things at the end of each line??
Thank you
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