頭文字が「O」の関数
| 関数名 | 概要 |
|---|---|
| oct | 8進数を10進数に変換します。 |
| open | Opens the file whose filename is given by EXPR, and associates it with FILEHANDLE. |
| opendir | Opens a directory named EXPR for processing by `readdir', `telldir', `seekdir', `rewinddir', and `closedir'. |
| ord | 指定された１番目の文字のASCIIコードを返します。 |
| our | An `our' declares the listed variables to be valid globals within the enclosing block, file, or `eval'. |