digest

   1 #!/bin/bash
   2
   3 # Gross hack to create a version of /usr/bin/digest that doesn't need
   4 # to have all of the crypto framework libraries. sha1sum is available,
   5 # and we can use it.  This is needed for bootadm(1M).
   6
   7 # FOR NOW, assume we're only ever going to be invoked by create_ramdisk,
   8 # which uses "digest -a sha1 <one-filename>".
   9
  10 usage() {
  11     echo "Usage:" > /dev/stderr
  12     echo "  digest -l | [-v] -a <algorithm> [file...]" > /dev/stderr
  13     exit 2
  14 }
  15
  16 if [[ $1 != "-a" || $2 != "sha1" ]]; then
  17     usage
  18 fi
  19
  20 sha1sum $3 | awk '{print $1}'
  21 exit 0