chksums.sh

# bourne shell functions below take 1 argument, the file_to_hash.  
# prints hex digest on stdout

md5() {
  perl -MDigest::MD5=md5_hex -le'print md5_hex(<> or die)' "$1"
  # ruby   -rdigest/md5 -e"puts Digest::MD5.file'/dev/null'"
  # python -sBc "import hashlib;print hashlib.md5(open('$1','rb').read()).hexdigest()"
  # md5 "$1"|cut -d' ' -f4    # mac/bsd
  # md5sum "$1"|cut -d' ' -f1 # linux
}


sha1() { 
  perl     -MDigest::SHA=sha1_hex -Xle'print sha1_hex(<> or die)' "$1"
  # ruby    -rdigest/sha1 -e"puts Digest::SHA1.file'$1'"
  # python  -sBc "import hashlib;print hashlib.sha1(open('$1','rb').read()).hexdigest()"
  # shasum  "$1"|cut -d' ' -f1  # mac/bsd 
  # sha1sum "$1"|cut -d' ' -f1 # linux
}


sha224() {
  perl       -MDigest::SHA=sha224_hex -le'print sha224_hex(<>or die)' "$1"
  # ruby      -rdigest/sha2 -e"puts Digest::SHA224.file'$1'"
  # python    -sBc "import hashlib;print hashlib.sha224(open('$1','rb').read()).hexdigest()"
  # shasum    -a224 "$1"|cut -d' ' -f1 # mac/bsd 
  # sha224sum "$1"|cut -d' ' -f1    # linux
}


sha256() {
  perl       -MDigest::SHA=sha256_hex -le'print sha256_hex(<>or die)' "$1"
  # ruby      -rdigest/sha2 -e"puts Digest::SHA256.file'$1'"
  # python    -sBc "import hashlib;print hashlib.sha256(open('$1','rb').read()).hexdigest()"
  # shasum    -a256 "$1"|cut -d' ' -f1 # mac/bsd 
  # sha256sum "$1"|cut -d' ' -f1    # linux
}


sha384() {
  perl       -MDigest::SHA=sha384_hex -le'print sha384_hex(<>or die)' "$1"
  # ruby      -rdigest/sha2 -e"puts Digest::SHA384.file'$1'"
  # python    -sBc "import hashlib;print hashlib.sha384(open('$1','rb').read()).hexdigest()"
  # shasum    -a384 "$1"|cut -d' ' -f1 # mac/bsd 
  # sha384sum "$1"|cut -d' ' -f1    # linux
}


sha512() {
  perl       -MDigest::SHA=sha512_hex -le'print sha512_hex(<>or die)' "$1"
  # ruby      -rdigest/sha2 -e"puts Digest::SHA512.file'$1'"
  # python    -sBc "import hashlib;print hashlib.sha512(open('$1','rb').read()).hexdigest()"
  # shasum    -a512 "$1"|cut -d' ' -f1 # mac/bsd 
  # sha512sum "$1"|cut -d' ' -f1    # linux
}