[SOLVED] insert file after a line with sed or awk?

[cornercuttin]

i know this can be done, i just can't figure it out (i'm good with RegEx's, but bad with sed).

i need to insert file2 into file1 after finding PATTERN

ex:
file1 -
abcdef
ghijklm
nopqrs

file2 -
tuvwxzy
yzxwvut

so say my pattern is "ghij". i would need to insert file2 into the line after that pattern is found.

i know this can be done with sed, the 'r' option, and somehow designating an 'a' for append, but i just don't understand the order/syntax for that.

any help would be greatly appreciated. thank you.

[cornercuttin]

so i just tried a bunch of different things, and ran into the solution.

sed -i '/MYREGEXPATTERN/ r myfiletoinsert.txt' mymainfile.txt

easy enough. would be nice if you could do this with a case insensitive search, but this will do. you can just add the insensitive regex if you wanted.