tar removing leading ‘/’ from member names
The “good” version is also displaying the same message you’ve just missed it. If you don’t like the behaviour, search for “leading”, in manual. First hit:
linux
Cannot use mkdir in home directory: permission denied (Linux Lubuntu)
As @kirbyfan64sos notes in a comment, /home is NOT your home directory (a.k.a. home folder): The fact that /home is an absolute, literal path that has no user-specific component provides a clue. While /home happens to be the parent directory of all user-specific home directories on Linux-based systems, you shouldn’t even rely on that, given that this differs across platforms: for instance, the equivalent directory on macOS is /Users. What all Unix … Read more
Pseudo-terminal will not be allocated because stdin is not a terminal
Try ssh -t -t(or ssh -tt for short) to force pseudo-tty allocation even if stdin isn’t a terminal. See also: Terminating SSH session executed by bash script From ssh manpage:
Need a good hex editor for Linux
Bless is a high quality, full featured hex editor. It is written in mono/Gtk# and its primary platform is GNU/Linux. However it should be able to run without problems on every platform that mono and Gtk# run. Bless currently provides the following features: Efficient editing of large data files and block devices. Multilevel undo – redo … Read more
Docker can’t connect to docker daemon
After I update my Docker version to 0.8.0, I get an error message while entering sudo docker version: And I’ve followed the instructions and entered command sudo docker -d, and I got this: How do I solve the problem?
Using O_RDWR vs O_RDONLY | O_WRONLY
O_RDONLY | O_WRONLY (at least on my Linux machine) is not the same thing as O_RDWR. The fact that it works seems like a bug/feature/coincidence rather than “it works because it should work that way”.
Hadoop “Unable to load native-hadoop library for your platform” warning
I assume you’re running Hadoop on 64bit CentOS. The reason you saw that warning is the native Hadoop library $HADOOP_HOME/lib/native/libhadoop.so.1.0.0 was actually compiled on 32 bit. Anyway, it’s just a warning, and won’t impact Hadoop’s functionalities. Here is the way if you do want to eliminate this warning, download the source code of Hadoop and recompile libhadoop.so.1.0.0 on 64bit … Read more
Ubuntu: OpenJDK 8 – Unable to locate package
UPDATE: installation without root privileges below I advise you to not install packages manually on ubuntu system if there is already a (semi-official) repository able to solve your problem. Further, use Oracle JDK for development, just to avoid (very sporadic) compatibility issues (i’ve tried many years ago, it’s surely better now). Add the webupd8 repo to your … Read more
ssh: Could not resolve hostname [hostname]: nodename nor servname provided, or not known
Recently I came across the same issue. I was able to ssh to my pi on my network, but not from outside my home network. I had already: installed and tested ssh on my home network. Set a static IP for my pi. Set up a Dynamic DNS service and installed the software on my … Read more
How does “cat << EOF" work in bash?
This is called heredoc format to provide a string into stdin. See https://en.wikipedia.org/wiki/Here_document#Unix_shells for more details. From man bash: Here Documents This type of redirection instructs the shell to read input from the current source until a line containing only word (with no trailing blanks) is seen. All of the lines read up to that point are then used as the … Read more