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jeffmikels/hex.py

Created March 12, 2021 17:33
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  1. jeffmikels revised this gist Mar 12, 2021. No changes.
  2. jeffmikels created this gist Mar 12, 2021.
    26 changes: 26 additions & 0 deletions hex.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,26 @@
    #!/usr/bin/env python3

    # usage:
    # hex.py file1 file2
    # cat file1 | hex.py

    import os, sys

    if len(sys.argv) > 1:
    for fn in sys.argv[1:]:
    print(fn)
    with open(fn, 'rb') as f:
    print(f.read().hex(' ', 1))
    exit()

    hasmore = True
    while hasmore:
    # os.read returns a bytes object
    # sys.stdin returns a str object

    # read one byte from file descriptor 0 (stdin)
    b = os.read(0,1)
    if b == b'':
    print('')
    exit()
    print(b.hex(), end=' ')