linux tag

403 questions


2 answers
47 views
0
Isn't it common for rental servers to use environmental variables?

Question 1Isn't it common for rental servers to use environmental variables?If I want to use environment variables, would it be more secure to use clouds such as VPS and AWS?Survey 1When I contacted a...

2 years ago

2 answers
38 views
0
Root User UID and GID Documentation

I think the root user's UID and GID are assigned a zero, but what is the documentation for this issue?Question 1)Where is the official information (primary information) about the above?Question 2)Is i...

2 years ago

1 answers
69 views
0
CMake Error: The source directory"/home/opencv" does not exist. on Raspberry Pi

This is the Raspberry Pi screen.pi@raspberrypi:~$cmake-DOPENCV_EXTRA_MODULES_PATH=../opencv_contrib/modules/../opencv/CMake Error: The source directory/home/opencv does not exist.Specify --help for us...

2 years ago

1 answers
35 views
0
About Linux Cluster System Deployment

Linux (UBUNTU) is considering running a two-unit cluster (DB is Mysql).I would like to support failover on a hot standby.Is it possible to do the following?1. The application wants to get whether its ...

2 years ago

1 answers
49 views
0
How to Docker an Existing System

I would like to make a Docker (image creation) for the web application that is already running. What should I do?I still don't understand whether I should use a clean OS image to create the same confi...

2 years ago

2 answers
42 views
0
Sharing Login Information

We are thinking of opening a small programming class.I would like to have one classroom in my LAN as follows:Student PCs should be 4 PC_A to PC_D.PC_A to PC_D include CentOS 7.PC_A to PC_D share login...

2 years ago

3 answers
83 views
0
"Symbol lookup error: undefined symbol: Perl_Gthr_key_ptr" error on perl

The perl script that used to work normally now produces the following error:perl:symbol lookup error: /usr/local/lib64/perl5/auto/JSON/XS/XS.so:undefined symbol:Perl_Gthr_key_ptrTherefore, when I try ...

2 years ago

5 answers
42 views
0
Is it possible to automatically have the same permissions as the directory when creating and copying files?

On Linux, assume that the directory permissions are as follows:drwxrwxr-x2 root test 9999 July 12 11:52when a file is created or copied to a directory below this fileIs it possible to automatically ha...

2 years ago

1 answers
126 views
0
I ACCEPTed the port with iptables, but I can't see which process is being used in netstat, etc.

Prerequisites/What you want to achieveYou are trying to improve the connection error on the redis server.I have two questions.I wrote the settings on iptables to open the port to which I am connecting...

2 years ago

2 answers
97 views
0
@reboot does not work on cron.

Nice to meet you I am a beginner in Linux, and I have a question because I didn't see any similar cases online.On the raspies sudo crontab-eLaunch the editor from the and 10***/usr/bin/python3/home/pi...

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