التابع test‎ الخاص بالصنف Kernel في روبي

يستخدم التابع test الحرف cmd لإجراء عدة اختبارات على file1 (الجدول الأول أدناه) أو على file1 و file2 (الجدول الثاني). اختبارات File على ملف واحد:

Cmd    Returns   Meaning
"A"  | Time    | Last access time for file1
"b"  | boolean | True if file1 is a block device
"c"  | boolean | True if file1 is a character device
"C"  | Time    | Last change time for file1
"d"  | boolean | True if file1 exists and is a directory
"e"  | boolean | True if file1 exists
"f"  | boolean | True if file1 exists and is a regular file
"g"  | boolean | True if file1 has the \CF{setgid} bit
     |         | set (false under NT)
"G"  | boolean | True if file1 exists and has a group
     |         | ownership equal to the caller's group
"k"  | boolean | True if file1 exists and has the sticky bit set
"l"  | boolean | True if file1 exists and is a symbolic link
"M"  | Time    | Last modification time for file1
"o"  | boolean | True if file1 exists and is owned by
     |         | the caller's effective uid
"O"  | boolean | True if file1 exists and is owned by
     |         | the caller's real uid
"p"  | boolean | True if file1 exists and is a fifo
"r"  | boolean | True if file1 is readable by the effective
     |         | uid/gid of the caller
"R"  | boolean | True if file is readable by the real
     |         | uid/gid of the caller
"s"  | int/nil | If file1 has nonzero size, return the size,
     |         | otherwise return nil
"S"  | boolean | True if file1 exists and is a socket
"u"  | boolean | True if file1 has the setuid bit set
"w"  | boolean | True if file1 exists and is writable by
     |         | the effective uid/gid
"W"  | boolean | True if file1 exists and is writable by
     |         | the real uid/gid
"x"  | boolean | True if file1 exists and is executable by
     |         | the effective uid/gid
"X"  | boolean | True if file1 exists and is executable by
     |         | the real uid/gid
"z"  | boolean | True if file1 exists and has a zero length‎

اختبارات تشمل ملفين:

"-"  | boolean | True if file1 and file2 are identical
"="  | boolean | True if the modification times of file1
     |         | and file2 are equal
"<"  | boolean | True if the modification time of file1
     |         | is prior to that of file2
">"  | boolean | True if the modification time of file1
     |         | is after that of file2‎

البنية العامة

test(cmd, file1 [, file2] ) → obj‎

انظر أيضا

• التابع system: ينفذ التابع system الوسيط command… في صدفة فرعية (subshell).يأخذ command… أحد الأشكال التالية.
• التابع throw: ينقل التابع throw الضبط (control) إلى نهاية كتلة catch النشطة في انتظار الوسم (tag). ويطلق UncaughtThrowError إذا لم يكن هناك كتلة catch لذلك الوسم. يوفر الوسيط الاختياري الثاني قيمة لتُعيدها الكتلة catch، في حال عدم تمريره ستكون قيمتها الافتراضية هي nil. للحصول على بعض الأمثلة، انظر Kernel::catch.

مصادر

• قسم التابع test‎ في الصنف Kernel‎ في توثيق روبي الرسمي.