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instance method

FileTest#readable?

File.readable?(file_name) → true or false

static VALUE
rb_file_readable_p(VALUE obj, VALUE fname)
{
    return RBOOL(rb_eaccess(fname, R_OK) >= 0);
}

Returns true if the named file is readable by the effective user and group id of this process. See eaccess(3).

Note that some OS-level security features may cause this to return true even though the file is not readable by the effective user/group.

See also #pipe? #readable_real? #owned? #setgid? also in 4.1 · 4.0 · 3.4 · 3.3 · 3.1 · 3.0