Im trying to check whether the contents of file_A is present in file_B. I thought about using grep command but that would be line by line. Im trying to compare a chunk of lines and see if this chunk is present in file_B. An example of content in file_A: "aaa bbbcccdddddd dddd eee fff ggg hh iiii jjj kkk" Any advice on how i can do this? Pls help - thank you.

Does this help: http://www.computing.net/answers/un...

Im afraid not :( The guy is checking line by line which is something i know how to do. But for my case here, i want to compare several combined lines and see if this combined lines is present in the other file. e.g. "I do not like to go to school since young." I want to check if the sample sentence above (together with its 'new line') is present in the file being compared. Maybe i need to make a script to first look for all lines with "I do not like to" and then check if the next line is "go to school since young". I dont want to do this because the lines involved are usually 10-20 lines...hence this method would be quite slow. Any advice?

Please try this code: I use this to check archivelog directory with archivelog files. counter=1 exec 3< ${tmpfile} while read -u3 line do grep "$line" ${tmpfile3} 1>/dev/null if [[ $? -eq 1 ]] then print "Warning: File $line is missing from ***file!!!" >> $tmpfile4 fi (( counter += 1 )) done sureshht