xargs -r0 vs xargs -0

Question

Eu vi exemplos na web de xargs com o argumento -r0 . O que esse argumento significa? As minhas páginas man não mostram nenhuma entrada para - r0 nem a maioria das páginas man que eu vi (por exemplo, link )

    

Answer 1

-r0 é dois sinalizadores. É -r e é -0 .

Na% man_de% manpage:

-r
If the standard input does not contain any nonblanks, do not run the command. Normally, the command is run once even if there is no input. This option is a GNU extension.

-0
Input items are terminated by a null character instead of by whitespace, and the quotes and backslash are not special (every character is taken literally). Disables the end of file string, which is treated like any other argument. Useful when input items might contain white space, quote marks, or backslashes. The GNU find -print0 option produces input suitable for this mode.