How to mkdir only if a dir does not already exist? 我正在编写一个shell脚本,在AIX上的kornshell(ksh)下运行。我想使用mkdir命令创建一个目录。但是目录可能已经存在,在这种情况下,我不想做任何事情。因此,我想测试一下目录是否不存在,或者取消mkdir在创建现有目录时抛出的"文件存在"错误。 有没有想过如何最...
* @return true if and only if the directory was * created; false otherwise * * @throws SecurityException * If a security manager exists and its {@link * java.lang.SecurityManager#checkWrite(java.lang.String)} * method does not permit the named directory to be created */ public boolean...
returnundefinedif a root dir, ormadeif set, orpath windows vs unix caveat On Windows file systems, attempts to create a root directory (ie, a drive letter or root UNC path) will fail. If the root directory exists, then it will fail withEPERM. If the root directory does not exist, th...
The command mentioned above will generate the directories named sample1, sample2, and sample3 only if they are not already present. Example #4 mkdir a/b By executing the aforementioned command, a subdirectory named b will be formed inside a pre-existing dire...
The-p(i.e.,parents) option creates the specified intermediate directories for a new directory if they do not already exist. For example, it can be used to create the following directory structure: mkdir -p food/fruit/citrus/oranges
<?PHP mkdir("tp/"); //create directory tp/ in current directory by default mkdir("./tp/"); //create directory tp/ in current directory if (!file_exists("../tp/")) mkdir("../tp/"); //create directory tp/ in upper directory if not exists ?> By...
vl-member-if-not (AutoLISP) vl-mkdir (AutoLISP) vl-position (AutoLISP) vl-prin1-to-string (AutoLISP) vl-princ-to-string (AutoLISP) vl-propagate (AutoLISP) vl-registry-delete (AutoLISP) vl-registry-descendents (AutoLISP) vl-registry-read (AutoLISP) vl-registry-write (AutoLISP) vl-remove (...
*CHGONLY After an object is created in the directory, the object will be scanned according to the rules described in the scan-related exit programs only if the object has been modified since the last time the object was scanned. It will not be scanned if the scanning software has been upd...
* − This parameter indicates that all following parameters (in this case, dir_fd) are keyword-only parameters. Return Value The Python os.mkdir() method does not return any value. Example In this example, we are creating a directory named "monthly" using the mkdir() method. Here, we ...
$dirs[$i]; if (!is_dir($path) && !mkdir($path, $mode)) { return false; } } return true; } ?> It will only fail if someone specifies a mode which does not allow owner to create new entries in directory. sean at pedlr dot com 08-Mar-2007 08:58 It should be noted that...