How do I dump a "pure" and plain binary sequence of bits?
For example, I have this:
0000000: 10001001 01010000 01001110 01000111 00001101 00001010 .PNG.. 0000006: 00011010 00001010 00000000 00000000 00000000 00001101 ...... 000000c: 01001001 01001000 01000100 01010010 00000000 00000000 IHDR.. 0000012: 00000010 01011000 00000000 00000000 00000001 10010000 .X.... 0000018: 00001000 00000010 00000000 00000000 00000000 11111101 ...... 000001e: 01010111 10001001 11001111 00000000 00000000 00000000 W..... 0000024: 00000111 01110100 01001001 01001101 01000101 00000111 .tIME. Those line numbers on the left, and the ASCII on the right is a problem for me. I did try this to remove it:
xxd -b /root/Desktop/image.png | sed -r "s/\d32{3,}.*//g" | sed "s/.*://" | sed "s/\d32//g"However, I did not succeed:
100010010101000001001110010001110000110100001010.PNG.. 000110100000101000000000000000000000000000001101...... 010010010100100001000100010100100000000000000000IHDR.. 000000100101100000000000000000000000000110010000.X.... 000010000000001000000000000000000000000011111101...... 010101111000100111001111000000000000000000000000W..... 000001110111010001001001010011010100010100000111.tIME.Is there a tool like 'xxd' or 'hexdump' or something that could produce a clean binary sequence out of a file?
For example,
01010101000100100100010100100010000010101010101010101001011 101010101010101001001010101010101000000100010001000010000001 Answer
It's simple enough to parse the output into the format you want:
xxd -b /root/Desktop/image.png | cut -d: -f 2 | sed 's/ .*//; s/ //g'The cut will remove the line numbers and the sed will first remove the last column (s/ .*// will remove everything that comes after two consecutive spaces) and then removes all single spaces.
You could also use awk:
xxd -b ~/a.png | awk '{print $2$3$4$5$6$7}'Or Perl:
xxd -b ~/a.png | head -1 | perl -lane 'print join "",@F[1..6]'Or coreutils:
xxd -b ~/a.png | cut -d" " -f2-7 | tr -d ' '
