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Full Discussion: Binary write POSIX-ly.
Top Forums UNIX for Advanced & Expert Users Binary write POSIX-ly. Post 302980449 by RudiC on Sunday 28th of August 2016 04:53:04 AM
Old 08-28-2016
Isn't that approach a bit overcomplicated? Why not save some lines of code, some variables, and reduce the amount of data shoved to and fro?
Code:
binary () 
{ 
    printf '%s\n' $1 | while read octal; do
        while [ "${#octal}" -gt 0 ]; do
            subtx=${octal%"${octal#???}"};
            octal=${octal#"${subtx}"};
            printf '%b' "\0$subtx";
        done;
    done
}

Call it like binary "$aplit_octal".
This User Gave Thanks to RudiC For This Post:
 

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uuencode(3tcl)					       Text encoding & decoding binary data					    uuencode(3tcl)

__________________________________________________________________________________________________________________________________________________

NAME
uuencode - UU-encode/decode binary data SYNOPSIS
package require Tcl 8 package require uuencode ?1.1.4? ::uuencode::encode string ::uuencode::decode string ::uuencode::uuencode ?-name string? ?-mode octal? (-file filename | ?--? string) ::uuencode::uudecode (-file filename | ?--? string) _________________________________________________________________ DESCRIPTION
This package provides a Tcl-only implementation of the uuencode(1) and uudecode(1) commands. This encoding packs binary data into printable ASCII characters. ::uuencode::encode string returns the uuencoded data. This will encode all the data passed in even if this is longer than the uuencode maximum line length. If the number of input bytes is not a multiple of 3 then additional 0 bytes are added to pad the string. ::uuencode::decode string Decodes the given encoded data. This will return any padding characters as well and it is the callers responsibility to deal with handling the actual length of the encoded data. (see uuencode). ::uuencode::uuencode ?-name string? ?-mode octal? (-file filename | ?--? string) ::uuencode::uudecode (-file filename | ?--? string) UUDecode a file or block of data. A file may contain more than one embedded file so the result is a list where each element is a three element list of filename, mode value and data. OPTIONS
-filename name Cause the uuencode or uudecode commands to read their data from the named file rather that taking a string parameter. -name string The uuencoded data header line contains the suggested file name to be used when unpacking the data. Use this option to change this from the default of "data.dat". -mode octal The uuencoded data header line contains a suggested permissions bit pattern expressed as an octal string. To change the default of 0644 you can set this option. For instance, 0755 would be suitable for an executable. See chmod(1). EXAMPLES
% set d [uuencode::encode "Hello World!"] 2&5L;&\@5V]R;&0A % uuencode::uudecode $d Hello World! % set d [uuencode::uuencode -name hello.txt "Hello World"] begin 644 hello.txt +2&5L;&@5V]R;&0` ` end % uuencode::uudecode $d {hello.txt 644 {Hello World}} BUGS, IDEAS, FEEDBACK This document, and the package it describes, will undoubtedly contain bugs and other problems. Please report such in the category base64 of the Tcllib SF Trackers [http://sourceforge.net/tracker/?group_id=12883]. Please also report any ideas for enhancements you may have for either package and/or documentation. KEYWORDS
encoding, uuencode CATEGORY
Text processing COPYRIGHT
Copyright (c) 2002, Pat Thoyts base64 1.1.4 uuencode(3tcl)
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