uuencode, uudecode - Encodes or decodes a binary file
uuencode [file] remotefile
uudecode [file...]
Interfaces documented on this reference page conform to
industry standards as follows:
uudecode: XCU5.0
uuencode: XCU5.0
Refer to the standards(5) reference page for more information
about industry standards and associated tags.
The uuencode and uudecode commands are used to send a
binary file via uucp or other mail. This combination can
be used over indirect mail links even when uusend is not
available.
The uuencode command takes the named file (default standard
input) and produces an encoded version on the standard
output. The encoding uses only printing ASCII characters,
and includes the mode of the file and the name for
re-creation on the remote system, specified by remotefile.
The uudecode command reads an encoded file, strips off any
leading and trailing lines added by mailers, and recreates
the original file with the specified mode and name. Filter
the encode through the uudecode program. Filtering
the file causes the original file to be automatically
recreated. This is possible on the uucp network by using
sendmail or by making rmail be a link to mailx. In each
case, an alias must be created in a master file to get the
automatic invocation of uudecode.
If neither of the preceding facilities is available on a
user's system, uudecode can be applied to the file manually
by editing the file with any text editor, removing
the trailing and leading lines, and changing the mode or
remote system name. The encoded file is an ordinary text
file.
In the following example, the ex1 file is encoded; the
output is also redirected to the ex1.out file: prompt>
uuencode ex1 ex1.en > ex1.out
If the source ex1 file is as follows:
This example shows how to encode a file using uuencode
and how to decode a file using uudecode.
The encoded ex1.out file would be as follows:
begin 644 ex1.en
M5&AI<R!E>&%M<&QE('-H;W=S"G1H92!H;W<@=&\@96YC;V1E"F$@9FEL92!U
M<VEN9PIU=65N8V]D90IA;F0@:&]W('1O"F1E8V]D92!A(&9I;&4*=7-I;F<@
*=75D96-O9&4N"F]D ` end In the following example,
the ex1.out file is decoded: prompt> uudecode
ex1.out
In this example, the uudecode command decodes the
file and puts the output in ex1.en. To package up
a source tree using tar, compress it, uuencode it,
and mail it to a user on another system, enter: tar
cf - src_tree | compress | uuencode src_tree.tar.Z
| mail sys1!sys2!user1
(Enter the command entirely on one line, not on two
lines as shown above.)
When uudecode is run on the target system, the
src_tree.tar.Z file is created; it may then be
uncompressed and dearchived with tar.
Commands: ct(1), cu(1), mailx(1), Mail(1), rmail(1),
sendmail(8), tip(1), uucico(8), uucleanup(8), uucp(1),
uulog(1), uuname(1), uupick(1), uusched(8), uusend(1),
uustat(1), uuto(1), uux(1)
Standards: standards(5)
uuencode(1)
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