Date: Wed, 20 Oct 2010 00:36:44 +1100 From: andrew clarke <mail@ozzmosis.com> To: Matthias Apitz <guru@unixarea.de> Cc: freebsd-questions@freebsd.org Subject: Re: filter a binary file and reduce 0x150a to 0x15 Message-ID: <20101019133644.GA70489@ozzmosis.com> In-Reply-To: <20101019130845.GA3773@current.Sisis.de> References: <20101019130845.GA3773@current.Sisis.de>
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On Tue 2010-10-19 15:08:45 UTC+0200, Matthias Apitz (guru@unixarea.de) wrote: > Before I programm it in C (or whatever), is there any normal shell tool > to filter a (large) binary file and change any occurance of 0x150a to > 0x15 (i.e. delete \n but only if it follows a char 0x15)? I'd be personally more comfortable doing it in C or Python but I think you can do this with tr -s. Note: 0x15 == 25 octal; 0x0a == 12 octal. I don't recall if it's possible to use hex values in csh arguments - if so, what is the syntax? 0:28 ozzmosis@blizzard [~/tmp]printf 'Hello\25\12world.\12' > blah 0:28 ozzmosis@blizzard [~/tmp]hd blah 00000000 48 65 6c 6c 6f 15 0a 77 6f 72 6c 64 2e 0a |Hello..world..| 0000000e 0:28 ozzmosis@blizzard [~/tmp]tr -s '\25\12' '\25' < blah | hd 00000000 48 65 6c 6c 6f 15 77 6f 72 6c 64 2e 15 |Hello.world..| 0000000d Regards Andrew
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