Путеводитель по Руководству Linux

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   wordfree.3p    ( 3 )

выполнять расширения слов (perform word expansions)

Возвращаемое значение (Return value)

Upon successful completion, wordexp() shall return 0. Otherwise, a non-zero value, as described in <wordexp.h>, shall be returned to indicate an error. If wordexp() returns the value WRDE_NOSPACE, then pwordexp->we_wordc and pwordexp->we_wordv shall be updated to reflect any words that were successfully expanded. In other error cases, if the WRDE_APPEND flag was specified, pwordexp->we_wordc and pwordexp->we_wordv shall not be modified.

The wordfree() function shall not return a value.