Where my question originated: When running cp source/files.all destination/, all the files within source will now also exist in destination Question: What if I didn’t want to duplicate the data from source into destination, but simply link them (with absolute path). Usually, I would run something like: …
Tag: linux
Why is sys_fork not used by glibc’s implementation of fork?
In eglibc’s nptl/sysdeps/unix/sysv/linux/i386/fork.c there’s a definition: which is used in actual __libc_fork() as the heart of the implementation. But e.g. in Linux’s arch/x86/entry/syscalls/syscall_32.tbl exists a sys_fork entry, as well as in syscalls_64.tbl. So apparently Linux does hav…
Compressing ZIP files in a linux server with PHP
I am trying to create a .zip file of a folder in linux. First I go where the compressed folder is: The folder test has the folder testzip which should be zipped and sent somewhere else: This should create testzip.zip. Somehow this doesn’t work. Could anyone help? Answer Try with instead of — EDIT …
OpenCV: Detecting cat with specific color. Trivial?
I have a problem with my cat being bullied by a nabouring cat to the extent that the cat enters our house in the summer and eat our cats food and sleeps in our furniture. My cat is gray and the problem cat is brown. I would like to make an alert system using a WiFi action cam and OpenCV
How i can execute command in linux terminal without using space?
How i can execute command in linux terminal without using space? example: cat text.log -> cat${space_code}text.log Answer Brace expansion can help you to construct complex bash commands without the use of spaces:
Setup makefile for ‘path agnostic’ inclusions
In my project files I just want to be able to say: main.cpp: When these headers files reside in separate I’ve setup my make file to attempt to achieve this but I still get fatal error: foo.h: No such file or directory so I haven’t been able to set it up correctly. Makefile: Is LIBS correct? How ca…
Compiler says uuid.h not found but apt-get says it is
When compiling my C++ project that includes uuid.h I get the compile error: fatal error: uuid.h: No such file or directory I’m not sure whats going wrong. It could be my compiler instructions are wrong or that I indeed dont have that file installed (but I don’t think thats the problem). sudo apt-g…
The first character in the output stream is replaced with the last character of that stream which is removed. Why is that so?
Program’s Aim: The program is a hangman game which get a list of planets from our solar system, saves it to an array then randomly selects one word from the array and subsequently prints two letters of the word on the board. The program runs perfectly in a windows environment, but fails in runtime on li…
Why is interrupt disabled between spin_lock and spin_unlock in Linux?
I was reading the implementation of Linux semaphores. Due to atomicity, signal and wait (up and down in the source code) use spin locks. Then I saw Linux disabled interrupt in spin_lock_irqsave and reenabled interrupt in spin_unlock. This confused me. In my opinion, there is really no point disabling interrup…
Chromedriver works manually but fails when ran from Jenkins Slave
I have a Jenkins slave node setup with LinuxMint. So we can do some browser testing on a Linux box in Chrome and Firefox. I have the latest Chromedriver installed where the test can run it and when I go into /var/jenkins/workspace/<project name>/TestAutomation/SeleniumFramework manually and do my run np…