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Appending a line to a file only if it does not already exist
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If it's to a file where you need root permissions: sudo grep -qF "$LINE" "$FILE" || echo "$LINE" | sudo tee -a "$FILE"
– nebffa
Dec 8 '17 at 0:50
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Install tkinter for Python
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If, like me, you don't have root privileges on your network because of your wonderful friends in I.S., and you are working in a local install you may have some problems with the above approaches.
I spent ages on Google - but in the end, it's easy.
Do...
Do interfaces inherit from Object class in java
...nherit from Object class in Java?
No, they don't. And there is no common "root" interface implicitly inherited by all interfaces either (as in the case with classes) for that matter.(*)
If no then how we are able to call the method of object class on interface instance
An interface implicitly dec...
Why do I get a warning icon when I add a reference to an MEF plugin project?
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Can confirm that this was the root of the issue. Can also confirm that Visual Studio 2017 with update 15.3 has still not addressed the issue of not actually showing a meaningful message. Very annoying.
– Greg R Taylor
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How can I get Docker Linux container information from within the container itself?
...verridden, the hostname seems to be the short container id in Docker 1.12
root@d2258e6dec11:/project# cat /etc/hostname
d2258e6dec11
Externally
$ docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES...
Attach to a processes output for viewing
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For me, this worked:
Login as the owner of the process (even root is denied permission)
~$ su - process_owner
Tail the file descriptor as mentioned in many other answers.
~$ tail -f /proc/<process-id>/fd/1 # (0: stdin, 1: stdout, 2: stderr)
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Import an existing git project into GitLab?
...alized location (e.g. github) that does NOT contain the .git folder at the root of the repository. This is only a convenient option if you have access to the server where the bare repository is stored. Otherwise the answer by @Raveren is the best option.
– TinkerTenorSoftwareG...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...本地Windows系統中的WinSock版本和該版本所能支援的版本是如何等等。通常較新的版本同時能支援新舊版本 的WinSock，建議讀者能使用較新的WinSock版本。
WSANOTINITIALISED (10093) 未執行WSAStartup()
應用程式沒有呼叫WSAStartup()或是呼叫...
How to fix homebrew permissions?
...structive to some directories? I have a MacGPG2 directory that is owned by root and another dot-file as well.
– Jahhein
Jan 27 '18 at 13:21
5
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Error: Could not find or load main class in intelliJ IDE
... just close your intelliJ IDE and remove intelliJ IDE file and folder from root of project:
rm -rf .idea *.iml
Then open project with intelliJ. It must work now.
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