uid

问题 This question already has answers here : What is a serialVersionUID and why should I use it? (25 answers) Closed 5 years ago . I'm creating a Java application, and when creating an interface to use with an ADT, it finds the need to initialize a random number as an ID number. public class StackFullException extends RuntimeException { private static final long serialVersionUID = 1L; public StackFullException(){} public StackFullException(String message) { super(message); } } I'm curious as to

问题 I would like to be able to get the Linux UID (user ID) of an installed Android application. Excerpt from Security and Permissions: "At install time, Android gives each package a distinct Linux user ID. The identity remains constant for the duration of the package's life on that device." Is there a way to retrieve this UID? 回答1: Use PackageManager and getApplicationInfo() . 回答2: adb shell dumpsys package com.example.myapp | grep userId= 回答3: The ‍ packages.xml file present in /data/system The

问题 I am trying to create deb package from LXC rootfs, and after creating it I want to install that package any computer. Up to this point I achieved packaging and installing deb package, however after installation of LXC package, I cannot be superuser in that lxc. I get this error when I use "sudo" command. sudo: effective uid is not 0, is sudo installed setuid root? thanks in advance. 回答1: I just had this same exact problem on Mac OS after strangely deciding to screw my own system by doing:

问题 How to generate unique ID that is integer in java that not guess next number? 回答1: How unique does it need to be? If it's only unique within a process, then you can use an AtomicInteger and call incrementAndGet() each time you need a new value. 回答2: int uniqueId = 0; int getUniqueId() { return uniqueId++; } Add synchronized if you want it to be thread safe. 回答3: It's easy if you are somewhat constrained. If you have one thread, you just use uniqueID++; Be sure to store the current uniqueID

问题 I have regButton and verifyOtpButtn for successful registration. in regButton i am giving phone number, for new user i will get otp, after entering otp i need to click verifyOtpButtn, here after successful registration i will get Uid in verifyOtpButtn... now how to check the user is new user or already registred user while registration. I am able to register new user but unable to check the user is already registered or not.. please help me in the below code. here i am saving sucessful

问题 I have all my pods correctly installed. My app launches and then when I get to scenes that have to access Firebase I've noticed there's a crash. The reason seems to be that Firebase is issuing me 2 different uid's and the one in Auth doesn't match the one in the Database. When my app launches in AppDelegate I have code to get the current uid. //This is in App Delegate let myUserID = FIRAuth.auth()?.currentUser?.uid print("App Delegate: UID is \(myUserID!)") //An example print is 'App Delegate

问题 Using regular expressions I have managed to extract all sender addresses from the emails located in my Inbox, However I've tried and failed many times to also extract the associated UIDs for those individual emails. Here's what I have so far: result, data = mail.search(None, 'ALL') ids = data[0] id_list = ids.split() for i in id_list: typ, data = mail.fetch(i,'(RFC822)') for response_part in data: if isinstance(response_part, tuple): msg = email.message_from_bytes(response_part[1]) sender =

问题 changeIDs() is trying to use setuid() to change the effective user id but it always errors out and I'm not sure why. I have two users on computer. user is an admin with UID of 1000. The other standard user, user 2, has a UID of 1001. I want to use this program to set user2's effective UID to that of user1 (1000). Why does setuid() keep erroring? I made sure to run chmod u+s on the program executable as well and it still fails. rror with setuid() - errno : Operation not permitted Also, do you

问题 I know that the standard doesn't say anything about the signedness of uid_t or gid_t . Inconsistency: Page http://www.gnu.org/software/libc/manual/html_node/Reading-Persona.html says: In the GNU C Library, this is an alias for unsigned int . But man setreuid says: Supplying a value of -1 for either the real or effective user ID forces the system to leave that ID unchanged. Questions: So, is uid_t signed or unsigned in the GNU Library? How can I supply -1 if uid_t and gid_t are unsigned ( -1

问题 I have an app that, when notified by a ContentObserver of a change to a ContentProvider , attempts to query the provider on a background thread. This causes an SecurityException to be thrown: 8-10 15:54:29.577 3057-3200/com.xxxx.mobile.android.xxx W/Binder﹕ Caught a RuntimeException from the binder stub implementation. java.lang.SecurityException: Permission Denial: reading com.xxx.mobile.android.mdk.model.customer.ContentProvider uri content://com.xxx.mobile.android.consumer.xxx/vehicle from