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fs.statsync error South Lee, Massachusetts

To be on the safe side, you need a higher level mechanism (some kind of lock somewhere, a lock-free algorithm, a switch to exclusive mode, ...). Reload to refresh your session. Returns undefined. Node.js Foundation member Fishrock123 commented Jan 4, 2016 Just to be clear, both the accessibleSync() PR #4217 and the "undeprecate existsSync" PR #4077 are now closed. #4217 was never closed and

Otherwise it returns a buffer. The callback will be given three arguments (err, written, buffer) where written specifies how many bytes were written from buffer. position refers to the offset from the beginning of the file where this data should be written. I do agree that fs.access has the correct API and fs.exists has issues, but I think the point of this issue is that there still are solid reasons to have simple

Using fs.stat() to check for the existence of a file before calling fs.open(), fs.readFile() or fs.writeFile() is not recommended. flags can also be a number as documented by open(2); commonly used constants are available from fs.constants. Returns the resolved path. File Mode Constants# The following constants are meant for use with the fs.Stats object's mode property for determining the access permissions for a file.

Fastest thing I can imagine is using fs.realpathSync which will throw an error that you have to catch, so you need to make your own wrapper function with a try/catch. fs.rename(oldPath, newPath, callback)# Added in: v0.0.2 oldPath | newPath | callback Asynchronous rename(2). If the encoding is set to 'buffer', the link path returned will be passed as a Buffer object. If fs.accessSync() and fs.statSync() returned false then the below code would work with either function being used: if (!fs.existsSync('/path/to/nowhere') && !fs.accessSync('/path/to/nowhere') && !fs.statSync('/path/to/nowhere') { console.log('It REALLY doesn\'t exist'); } In my

Class: fs.FSWatcher# Added in: v0.5.8 Objects returned from fs.watch() are of this type. Node.js Foundation member bnoordhuis commented Dec 22, 2015 @geoffp When you say "a file" do you mean a file of the same name at location B? We'll also discussed the various issues specifically around existSync and agree that a better solution needs to be developed than simply saying "don't do this". Appease Your Google Overlords: Draw the "G" Logo How to add part in eagle board that doesn't have corresponded in the schematic "jumpers"?

Returns an array of filenames excluding '.' and '..'. The official fs documentation recommends using fs.statSync or fs.accessSync instead, so let’s go over both. Export The $PATH Variable, Line-By-Line In the United States is racial, ethnic, or national preference an acceptable hiring practice for departments or companies in some situations? fs.fchownSync(fd, uid, gid)# Added in: v0.4.7 fd uid gid Synchronous fchown(2).

Node.js Foundation member Fishrock123 commented May 10, 2015 @benjamingr Sure, but one could argue: return false, it no longer exists. This could be an argument either for or against an API method, depending on the developer. xixixao commented Oct 13, 2015 Yes. Constant Description S_IFMT Bit mask used to extract the file type code.

Sync functions in node don't return the error like they would in their async versions. Only time that isn't strictly the case is on Windows. fs.lchownSync(path, uid, gid)# Deprecated since: v0.4.7 path | uid gid Synchronous lchown(2). or why not leave the wrapper the way it is and let me continue to use fs.existsSync?

If it's a file with a different name, there is no easy way to do that free of races. (There are complicated ways to do it free of races but none The optional options argument can be a string specifying an encoding, or an object with an encoding property specifying the character encoding to use. fs.readdir(path[, options], callback)# Added in: v0.1.8 path | options | encoding default = 'utf8' callback Asynchronous readdir(3). Both stat and access work fine, just not only checking if an error exists as an indicator the file exists or not.

If the file is created later on, the listener will be called again, with the latest stat objects. This API is still has deeply rooted usage in the node community and changing (for the forseeable future) it is not reasonable. When the user starts the app again, I (currently) use fs.exists to just quickly "validate" the list. The Sync methods don't have any way of notifying about an error.

Let’s again check whether a directory already exists before making it: 12345fs.access(myDir, function(err) { if (err && err.code === 'ENOENT') { fs.mkdir(myDir); }}); Note that I combined checking for the error EDIT: Doesn't seem to work. The options object may contain a boolean named persistent that indicates whether the process should continue to run as long as files are being watched. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

fs.futimes(fd, atime, mtime, callback)# Added in: v0.4.2 fd atime mtime callback Change the file timestamps of a file referenced by the supplied file descriptor. Why would that ever error? Instead, user code should open/read/write the file directly and handle the error raised if the file is not available. See also #1634.

Checking whether a file exists? Even on supported platforms, filename is not always guaranteed to be provided. fs.chownSync(path, uid, gid)# Added in: v0.1.97 path | uid gid Synchronous chown(2). The optional options argument can be a string specifying an encoding, or an object with an encoding property specifying the character encoding to use for the path passed to the callback.

All I'm trying to point out is that there are genuine use cases for an async exists method, the one above seems one of them, anything else feels like an unnecessary The hint was to use the fs.stat method. S_IWUSR File mode indicating writable by owner. Why not provide the same nicety here and eliminate the dozens of StackOverflow questions that will surely come out of this?

There's the basic -e for exists, but there's also -f for exists-and-is-a-file, -r for exists-readable, etc.: http://tldp.org/LDP/Bash-Beginners-Guide/html/sect_07_01.html Both of these are sync calls, obviously. Returns the number of bytesRead. If fd is specified, ReadStream will ignore the path argument and will use the specified file descriptor. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed

Functionality is as expected after exiting the process via process.exit() @Fishrock123 Yes, agreed and after spending some time on it I can see the reasoning for it. No arguments other than a possible exception are given to the completion callback. crrobinson14 commented Dec 17, 2015 PHP provides a pass-through to the usual FS "stat" category of calls, as well as direct checks for specific states like exists. File really does not exist console.log("File does not exist."); return false; } console.log("Exception fs.statSync (" + path + "): " + e); throw e; // something else went wrong, we don't

fs.fsync(fd, callback)# Added in: v0.1.96 fd callback Asynchronous fsync(2). matthew-dean commented Oct 12, 2015 @ChALkeR Fair enough. For me, it's not so. Framing "standalone" class output with "framed" and others Logical fallacy: X is bad, Y is worse, thus X is not bad How did the Romans wish good birthday?

http://docs.oracle.com/javase/7/docs/api/java/nio/file/Files.html#exists(java.nio.file.Path,%20java.nio.file.LinkOption...) This call throws SecurityException if the file exists but is not accessible by the user. After all, the real world is chaotic: If you check first and it's there, that doesn't mean it'll still be there when you try to open it; if you check first Constant Description F_OK Flag indicating that the file is visible to the calling process.