output one file per line

awk 'BEGIN{ORS=""}NR!=1&&FNR==1{print "\n"}{print}END{print "\n"}' *.txt
Problem: you want to output one line per file. you can't just 'tr -d' because you want one line per file and you don't want to use a loop. Solution: use awk to print each line without the record separator and a newline after each file.
Sample Output
$ cat a.txt
line1
line2
line3
$ cat b.txt
foo
bar
baz
$ awk 'BEGIN{ORS=""}NR!=1&&FNR==1{print "\n"}{print}END{print "\n"}' a.txt b.txt
line1line2line3
foobarbaz

-1
2010-05-24 19:22:35
awk

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