A family of Unix-like operating systems using the Linux kernel. If your question is about a certain distribution only, use a more specific tag.

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What is peer IP address in OpenVPN?

As a result of ip addr command on my Linux box, I can see that the tun interface of OpenVPN has a peer IP address. What does it exactly do?
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Various method to connect to a remote Server for using GPU (SSH,VPN, etc..)

Sorry for a newbie question.Following is my problem :- I have a personal linux machine and other linux machine(different continent) equipped with GPU support(for AI work). I am curious if the ...
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CentOS 7 GCC won't compile

I'm running CentOS 7 on a Dell Precision T3400. I have installed the Cacti network monitoring tool and am trying to install Spine, the last critical binary. I've downloaded Spine and am attempting to ...
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SOCAT - udp to tcp client; client does not connect if nothing to send on initial socat startup

Working on a device that requires me to send a special broadcast packet to get it to start talking. The issue I have ran into is, it seems that socat will not establish the connection if it has ...
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Linux without Networking Stack

I'm interested in producing a live-usb that runs Linux without any networking capabilities. No WiFi, bluetooth, ethernet or in general any network IO capabilites at all. Essentially an OS-level air-...
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1answer
24 views

How to get the real cached/prefetched memory usage in Linux?

I do face the same hangs like this post: https://askubuntu.com/questions/41778/computer-freezing-on-almost-full-ram-possibly-disk-cache-problemTo sums up: looks like prefetched/cached/paged RAM ...
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1answer
26 views

Why is there a huge discrepancy between file sizes reported by du versus ls?

On a server, I have a directory /opt/kafka/data/topics.$ du -hs /opt/kafka/data/topics52M /opt/kafka/data/topicsWhen I tar this directory like$ tar czfv /tmp/topics.tar.gz /opt/kafka/data/...
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Time synchronization issues between Linux and Windows systems

I have a Windows 7 and two Linux (Ubuntu 16.04) computers (W1, L1 & L2) connected via WiFi - a wired connection is unfortunately not possible. The Linux computers run chrony for time ...
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Adding a warning to `date -s` calls

I'm prone to calling date -s instead of date -d, and this can go badly when I call it on the wrong server. Is there a way to add a confirmation prompt to date -s so I realize what I've done?
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Nmap reports host down in VM, OK on host

I connect to a VPN and perform port scans on the IPs there with Nmap on my host, and also within a Virtual Machine (VMware Workstation Pro 12.5.8) with an installation of Nmap. A few days ago, the ...
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2answers
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$SHLVL does not increase in ( echo $SHLVL)

I am learning shell scripts and stuck at this little experimental shell scripts:1 #!/usr/bin/env bash2 A=13 (A=2;echo "A is $A in $SHLVL")4 echo "A is $A in $SHLVL"5 exit 0Without doubt, $A in ...
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1answer
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Logrotating postgres logs

My PostgreSQL log is writing as a single file. Its becoming bigger and bigger day by say as postgresql.log. I can see logging_collector is set as ON and log_rotation_age is also set to 1 day. Still ...
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1answer
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Connecting to Windows 7 using SMB protocol version 2.1 (Linux since 4.13)

Since the update to version 4.13 of the linux kernel my laptop running Arch Linux at first couldn't connect to the Windows 7 machines in my home network anymore. I've figured out that this is due to ...
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1answer
19 views

Add a ‘protective’ MBR to LVM2 physical volume

Some time ago I made a mistake of converting whole hard drive into a LVM PV without making a partition first.It doesn't cause any problems, but I want to be on the safe side (for example, Windows ...
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1answer
25 views

What drive partition type supports chmod-ing, 2tb drives and windows (no 3rd party software)?

I have a 2tb drive that needs to support Linux chmod-ing and windows 7. What format supports both? (I can't use 3rd party software on my windows machine.)

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