bash: insert multiple lines after a line containing a pattern using gawk

Question

I had posted a question on bash: insert a line after a pattern using gawk

How do I insert more than one line after a line containing a pattern?

Answer 1

String together your prints like awk '<condition>{print $0; print "222"; print "223"; print "224"}

Or use the newline character:

awk '<condition>{print $0"\nthis is a line\nthis is a secondline\nthis is a thirdline"}

Answer 2

I modified nm1 from 222 to 222\\n333 to add multiple lines at once (the command is from the answer of your original post )

awk '1; $1==nm2 && !a++ {print nm1}' nm1=222\\n333 nm2=22 file

output:

11
22
222
333
33
11
22
33