Linux in a Nutshell, Fifth Edition

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Linux

Commands

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uudecode

uudecode [-o outfile] [file]

Read a uuencoded file and re-create the original file with the

permissions and name set in the file (see uuencode). The -o option

specifies an alternate output file.

uuencode

uuencode [-m] [file] name

Encode a binary file. The encoding uses only printable ASCII char-

acters and includes the permissions and name of the file. When file

is reconverted via uudecode, the output is saved as name. If the file

argument is omitted, uuencode can take standard input, so a single

argument is taken as the name to be given to the file when it is

decoded. With the -m option, base64 encoding is used.

Examples

It’s common to encode a file and save it with an identifying exten-

sion, such as .uue. This example encodes the binary file flower12.

jpg, names it rose.jpg, and saves it to a .uue file:

$ uuencode flower12.jpg rose.jpg > rose.uue

Encode flower12.jpg and mail it:

$ uuencode flower12.jpg flower12.jpg | mail [e-mail]

uuidgen

uuidgen [option]

Create a new Universal Unique Identifier (UUID) and print it to

standard output. The generated UUID consists of five hyphen-

separated groups of hex digits (e.g., 3cdfc61d-87d3-41b5-ba50-

32870b33dc67). The default is to generate a random-based UUID,

but this requires that a high-quality random-number