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Reading binary content

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Operating Systems Solaris Reading binary content
# 15  
Old 10-20-2015
@wisecracker

With the correct shebang ("#!/bin/bash" as you use bash specific features), your script works under Solaris but is missing some code to answer the original question. Moreover, opening then skipping to each possible offset the input file for every byte in it is a very conterproductive approach.

@RudiC

"od -w" is non portable GNUism:

Code:
$ od -An -w1 -td1 file
usage: od [-bcCdDfFoOsSvxX] [-] [file] [offset_string]
       od [-bcCdDfFoOsSvxX] [-t type_string]... [-A address_base] [-j skip] [-N count] [-] [file...]

This User Gave Thanks to jlliagre For This Post:
RudiC
# 16  
Old 10-20-2015
Thanks. Alas, I don't have access to Solaris for tests.Try, then,
Code:
od -An -td1 file | tr -s ' ' $'\n'

Not sure if tr -s is portable, though.
# 17  
Old 10-20-2015
Quote:
Originally Posted by jlliagre
This being the Solaris forum, you should stick to Posix or Solaris commands, options and syntax.
Smilie Sorry about that. I was in the Linux zone of mind.
# 18  
Old 10-20-2015
@RudiC, still requiring some improvement:

Code:
$ od -x file
0000000 cea9 b0db 13f8 f4f5 837a a463 9066 3d1c
0000020 b201 61d4 2a5c 7732 bf55 b480 88e7 82a8
0000040
$ od -An -td1 file | tr -s ' ' $'\n' | while read VALUE; do for ((i=7; i>=0; i--)); do printf "%d" $(( (VALUE>>i)%2 )); done; printf "\n"; done
00000000
-10-10-100-1
-1-100-1-1-10
-1-10-1-10-1-1
-10-1-10000
-1-1-1-1-1000
00010011
-1-1-1-10-10-1
-1-1-1-10-100
01111010
-100000-1-1
01100011
-10-100-100
01100110
-100-10000
00011100
00111101
00000000
00000001
-10-1-100-10
-1-10-10-100
01100001
01011100
00101010
00110010
01110111
01010101
-10-1-1-1-1-1-1
-10000000
-10-1-10-100
-1-1-100-1-1-1
-1000-1000
-10-10-1000
-100000-10

# 19  
Old 10-20-2015
Hmmm -
Code:
od -x file
0000000 6c73 6461 6a66 0a6b 6672 6676 000a

od -An -v -td1 file | tr -s ' ' $'\n' | while read VALUE; do  printf "%02X\t" $VALUE;   for ((i=7; i>=0; i--)); do printf "%d" $(( (VALUE>>i) %2 )); done; printf "\n"; done
00    00000000
73    01110011
6C    01101100
61    01100001
64    01100100
66    01100110
6A    01101010
6B    01101011
0A    00001010
72    01110010
66    01100110
76    01110110
66    01100110
0A    00001010

---------- Post updated at 19:19 ---------- Previous update was at 19:17 ----------

... works on FreeBSD as well ...

---------- Post updated at 19:21 ---------- Previous update was at 19:19 ----------

Not sure where the - signs come from. If you remove them, the output is correct.
# 20  
Old 10-20-2015
Quote:
Originally Posted by RudiC
Hmmm -
...
Not sure where the - signs come from. If you remove them, the output is correct.
You are testing with an ASCII file so are missing to observe these negative values. Use a truly binary input file.
This User Gave Thanks to jlliagre For This Post:
RudiC
# 21  
Old 10-20-2015
Ohhh yes - that's it. Be back later.

---------- Post updated at 21:39 ---------- Previous update was at 21:35 ----------

Try the -tu1 instead of the -td1 option to od.
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