💬 Output

By default, results are printed as lines to standard output. LF character is used as a line terminator.

• Use -T, --print option to print results terminated by a specific string.
• Use -Z, --print-nul flag to print results terminated by NUL character.
• Use -R, --print-raw flag to print results without a terminator.
• Use -L, --no-print-end flag to disable printing terminator for the last result.

The following table shows how values would be printed for valid combinations of flags/options:

Values	Flags	Output
a, b, c	(none)	a\nb\nc\n
a, b, c	-L	a\nb\nc
a, b, c	-Z	a\0b\0c\0
a, b, c	-LZ	a\0b\0c
a, b, c	-T:	a:b:c:
a, b, c	-LT:	a:b:c
a, b, c	-R	abc

Apart from this (standard) mode, there are also two other output modes.

🤖 Diff mode

• Enabled using -d, --diff flag.
• Respects --print* flags/options.
• Ignores --no-print-end flag.
• Prints transformations in machine-readable format:

<input_value_1
>output_value_1
<input_value_2
>output_value_2
...
<input_value_N
>output_value_N

Such output can be processed by accompanying mvb and cpb utilities to perform bulk move/copy.

find -name '*.jpeg' | rew -d '{B}.jpg' | mvb # Rename all *.jpeg files to *.jpg
find -name '*.txt'  | rew -d '{}.bak'  | cpb # Make backup copy of each *.txt file

🌹 Pretty mode

• Enabled using -p, --pretty flag.
• Ignores --print* flags/options.
• Ignores --no-print-end flag.
• Prints transformations in human-readable format:

input_value_1 -> output_value_1
input_value_2 -> output_value_2
...
input_value_N -> output_value_N