insert

伯克利做的SFTP安全文件传输协议

#!/bin/sh
# insert one file into another; the insertion-string must appear on
#   a line by itself, and contain no embedded spaces

if [ "$2" = "" ] ; then
  echo "usage: $0 insertion-string file-to-insert < input > output"
  exit
fi

awk '{ if ($1 == "'${1}'") system("cat '"${2}"'"); else print }'