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//! # dd: convert and copy a file
//!
//! ## SYNOPSIS
//! dd \[OPERAND\]...
//! dd OPTION
//! ## DESCRIPTION
//! Copy a file converting and formatting according to the operands.
//! ## [`opts`]
//!
//! - **bs**=BYTES: read and write up to BYTES bytes at a time (default: 512).
//! - **overrides ibs and obs**
//!
//! - **cbs**=BYTES: convert BYTES bytes at a time
//!
//! - **conv**=[`CONVS`][opts::flags::Conv]: convert the file as per the coma
//! separated symbol list
//!
//! - **count**=N: copy only N input blocks
//!
//! - **ibs**=BYTES: read up to BYTES bytes at a time (default: 512)
//!
//! - **if**=FILE: read from FILE instead of stdin
//!
//! - **iflag**=[`FLAGS`][opts::flags::In]: read as per the comma separated
//! symbol list
//!
//! - **obs**=BYTES: write BYTES bytes at a time (default: 512)
//!
//! - **of**=FILE: write to FILE instead of stdout
//!
//! - **oflag**=[`FLAGS`][opts::flags::Out]: write as per the comma separated
//! symbol list
//!
//! - **seek**=N: skip N obs-sized blocks at start of output
//!
//! - **skip**=N: skip N ibs-sized blocks at start of input
//!
//! - **status=[LEVEL][opts::StatusLevel]**: the level of information to print
//! to stderr
//!
//! none: suppresses everything but error messages,
//! progress //! - **shows** periodic transfer statistics
//! noxfer: suppresses the final transfer statistics,
//!
//!
//! ### [Units][opts::number::units]:
//! N and BYTES may be followed by the following multiplicative suffixes:
//! - **B** = 1
//! - **K** = 1024
//! - **M**: K*K = 1024²
//! - **G**: M*K = 1024³
//! - **T**: G*K = 1024⁴
//! - **P**: T*K = 1024⁵
//! - **Z**: P*K = 1024⁶
//! - **KB**: 10⁶
//! - **MB**: 10⁹
//! - **GB**: 10¹²
//! - **TB**: 10¹⁵
//! - **ZB**: 10¹⁸
//! ### [`CONV`][opts::flags::Conv]
//! Each CONV symbol may be:
//!
//! - **ascii** from EBCDIC to ASCII
//!
//! - **ebcdic** from ASCII to EBCDIC
//!
//! - **ibm** from ASCII to alternate EBCDIC
//!
//! - **block** pad newline-terminated records with spaces to cbs-size
//!
//! - **unblock** replace trailing spaces in cbs-size records with newline
//!
//! - **lcase** change upper case to lower case
//!
//! - **ucase** change lower case to upper case
//!
//! - **sparse** try to seek rather than write the output for NUL input blocks
//!
//! - **swab** swap every pair of input bytes
//!
//! - **sync** pad every input block with NULs to ibs-size; when used with
//! block or unblock, pad with spaces rather than NULs
//!
//! - **excl** fail if the output file already exists
//!
//! - **nocreat** do not create the output file
//!
//! - **notrunc** do not truncate the output file
//!
//! - **noerror** continue after read errors
//!
//! - **fdatasync**
//! physically write output file data before finishing
//! - **fsync** likewise, but also write metadata
//! ### SIGNALS
//! Sending a USR1 signal to a running 'dd' process makes it print I/O
//! statistics to standard error and then resume copying.
//!
//!
//! ### OPTIONS
//! --help display this help and exit
//! --version
//! output version information and exit
//! ### AUTHOR
//! Originally Written by Paul Rubin, David MacKenzie, and Stuart Kemp.
//! Clone written _only_ by looking at man page by Efron Licht
//! input, output, and encoding
extern crate dd_lib;
!
!