Although some versions of sed may work on binary files, the standards only require sed to work on text files. A simple way that should work on most current systems is to use tr:
Some implementations of the tr utility may accept hex ranges, but the standards only specify octal as shown above. If your current locale has an underlying code set that only has single-byte eight-bit characters (such as ASCII or EBCDIC; but not UTF-8), you can skip the LC_ALL=POSIX.
Note, however, that if your image includes geolocation, timestamp, or camera settings data in addition to the actual image, you might not like the results unless you can extract just the image data you want to be processed.
Last edited by Don Cragun; 10-30-2013 at 05:33 PM..
Reason: fix typo
Hi,
I am trying to write a script which will modify a given account's settings by searching for a line in a file and then replacing the line after it. Here is a portion of my input file:
type=friend
username=0002
secret=password
host=dynamic
dtmfmode=rfc2833
mailbox=0002
context=sip... (2 Replies)
Hi,
I need to run a search and replace on a large database,
what I need to change is all instances of
#### (eg. 1764 or 1964)
to
(####) (eg. (1764) or (1964))
But there might be other numbers in there such as
(1764) and I do not need those changed to ((1764))
How can I... (7 Replies)
Hello, I want to rename multiple files and catch some points about backreference within sed and regex.
Here is a part of my file list. Input:
S92A.fa
S92B.fa
...
S96Z.fa
S921.fa
S922.fa
...
S997.fa Note: The file names are not necessarily continuous from A~Z or 921 ~ 997, as some of the... (3 Replies)
I have a file of protein sequences with headers (my source file). Based on a list of IDs (which are included in some of the headers), I'd like to print out only the specified sequences, with only the ID as header.
In other words, I'd like to search source.txt for the terms in IDs.txt, and print... (3 Replies)
Hello *nix specialists,
Im working for a non profit organisation in Germany to transport DSL over WLAN to people in areas without no DSL. We are using Linksys WRT 54 router with DD-WRT firmware There are at the moment over 180 router running but we have to change some settings next time. So my... (7 Replies)
I have file which contains data in the following format all in a single line:
BDW_PUBLN_ID DECIMAL(18:0) NOT NULL PRIMARY INDEX ARGO_ACCT_DEP_PI ( OFC_ID ,CSHBX_ID ,TRXN_SEQ_NUM ,PROCG_DT ) PARTITION BY RANGE_N(PROCG_DT BETWEEN DATE '2012-03-01' AND DATE '2014-12-31' EACH INTERVAL '1' MONTH );... (4 Replies)
Hello again. I have two problems - is it possible to solve them?
1. I want to replace a few bytes after specific hex-string.
i.e.: I want to replace two bytes after AA AB AC:
AA AB AC 00 00 AA AA AA
so the expected result should be:
AA AB AC FF FF AA AA AA
2. I want to replace three bytes... (9 Replies)
I have some text like
EU1BTDAT:ASSGNDD filename='$SEQFILES/SUNIA.PJ008202.CARDLIB/DATECARD'
EU1BTDATEST:ASSGNDD filename='$SEQFILES/SUNIA.PJ008202.CARDLIB/DATECARD'
EU1CLOSEDATES:ASSGNDD filename='$SEQFILES/SUNIA.PJ008202.CARDLIB/DATECARD'
EU1DATED:ASSGNDD... (8 Replies)
I have a XML file where there is a tag with like
<wd:address_line_1>1234 Street</wd:address_line_1>
I want to replace the values "1234 Street" with "Test Data". Different people have different address lines and i want to replace with a fixed value to mask the file. I was trying to use sed... (7 Replies)
Discussion started by: dr46014
7 Replies
LEARN ABOUT MOJAVE
od
OD(1) BSD General Commands Manual OD(1)NAME
od -- octal, decimal, hex, ASCII dump
SYNOPSIS
od [-aBbcDdeFfHhIiLlOosvXx] [-A base] [-j skip] [-N length] [-t type] [[+]offset[.][Bb]] [file ...]
DESCRIPTION
The od utility is a filter which displays the specified files, or standard input if no files are specified, in a user specified format.
The options are as follows:
-A base Specify the input address base. base may be one of d, o, x or n, which specify decimal, octal, hexadecimal addresses or no
address, respectively.
-a Output named characters. Equivalent to -t a.
-B, -o Output octal shorts. Equivalent to -t o2.
-b Output octal bytes. Equivalent to -t o1.
-c Output C-style escaped characters. Equivalent to -t c.
-D Output unsigned decimal ints. Equivalent to -t u4.
-e, -F Output double-precision floating point numbers. Equivalent to -t fD.
-f Output single-precision floating point numbers. Equivalent to -t fF.
-H, -X Output hexadecimal ints. Equivalent to -t x4.
-h, -x Output hexadecimal shorts. Equivalent to -t x2.
-I, -L, -l Output signed decimal longs. Equivalent to -t dL.
-i Output signed decimal ints. Equivalent to -t dI.
-j skip Skip skip bytes of the combined input before dumping. The number may be followed by one of b, k or m which specify the units of
the number as blocks (512 bytes), kilobytes and megabytes, respectively.
-N length Dump at most length bytes of input.
-O Output octal ints. Equivalent to -t o4.
-s Output signed decimal shorts. Equivalent to -t d2.
-t type Specify the output format. type is a string containing one or more of the following kinds of type specifiers:
a Named characters (ASCII). Control characters are displayed using the following names:
000 NUL 001 SOH 002 STX 003 ETX 004 EOT 005 ENQ
006 ACK 007 BEL 008 BS 009 HT 00a NL 00b VT
00c FF 00d CR 00e SO 00f SI 010 DLE 011 DC1
012 DC2 013 DC3 014 DC4 015 NAK 016 SYN 017 ETB
018 CAN 019 EM 01a SUB 01b ESC 01c FS 01d GS
01e RS 01f US 020 SP 0ff DEL
c Characters in the default character set. Non-printing characters are represented as 3-digit octal character codes,
except the following characters, which are represented as C escapes:
NUL
alert a
backspace
newline
carriage-return
tab
vertical tab v
Multi-byte characters are displayed in the area corresponding to the first byte of the character. The remaining bytes are
shown as '**'.
[d|o|u|x][C|S|I|L|n]
Signed decimal (d), octal (o), unsigned decimal (u) or hexadecimal (x). Followed by an optional size specifier, which
may be either C (char), S (short), I (int), L (long), or a byte count as a decimal integer.
f[F|D|L|n]
Floating-point number. Followed by an optional size specifier, which may be either F (float), D (double) or L (long
double).
-v Write all input data, instead of replacing lines of duplicate values with a '*'.
Multiple options that specify output format may be used; the output will contain one line for each format.
If no output format is specified, -t oS is assumed.
ENVIRONMENT
The LANG, LC_ALL and LC_CTYPE environment variables affect the execution of od as described in environ(7).
DIAGNOSTICS
The od utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
The traditional -s option to extract string constants is not supported; consider using strings(1) instead.
SEE ALSO hexdump(1), strings(1)STANDARDS
The od utility conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
HISTORY
An od command appeared in Version 1 AT&T UNIX.
BSD July 11, 2004 BSD