User A.B

90 votes

Accepted

Using `openssl` to display all certificates of a PEM file

answered Mar 21, 2022 at 13:00

66 votes

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bc: Why does `ibase=16; obase=10; FF` returns FF and not 255?

answered Aug 25, 2018 at 16:22

52 votes

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root cannot write to file that is owned by regular user

answered Feb 20, 2022 at 16:47

50 votes

Accepted

Copying files with certain extensions with scp

answered Jan 16, 2018 at 6:40

46 votes

Using mv command to move a file from one folder to another one - Strange example

answered Aug 26, 2020 at 7:15

41 votes

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How can I print a '@' in a Linux shell?

answered Aug 19, 2021 at 11:45

37 votes

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What is the difference between 'contrib' and 'non-free' packages repositories?

answered Apr 1, 2019 at 17:13

36 votes

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Netcat - How to listen on a TCP port using IPv6 address?

answered Jul 21, 2018 at 18:35

33 votes

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nftables whitelisting docker

answered Jul 10, 2021 at 12:53

30 votes

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Regain sudo access after nuking secondary groups

answered Jun 17, 2021 at 20:54

30 votes

Unable to kill process with PID 1 in docker container

answered Jul 21, 2018 at 13:57

27 votes

Accepted

Use uniq to filter adjacent lines in pipeline

answered Jun 18, 2023 at 13:52

25 votes

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How to find unspoofed MAC address of NIC

answered Feb 14, 2024 at 21:23

25 votes

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How --set-mark option works on Netfilter (IPTABLES)?

answered Sep 5, 2018 at 22:46

25 votes

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Bridged interfaces and VLAN tags

answered Oct 10, 2019 at 20:13

25 votes

Accepted

Packet processing order in nftables

answered Sep 1, 2020 at 17:45

23 votes

Accepted

Why not ssh.service but sshd.service?

answered Sep 5, 2018 at 6:13

22 votes

I see pids above 400,000 why is that? Does it indicate something is wrong?

answered Feb 12, 2019 at 20:47

21 votes

Accepted

Disk usage confusion: 10G missing on Linux home partition on SSD

answered Jun 29, 2019 at 11:19

20 votes

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When and how to use chain priorities in nftables

answered May 9, 2018 at 0:15

20 votes

Accepted

Why is my LAN cable opening an UDP port on my computer?

answered Dec 15, 2023 at 21:20

19 votes

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LD_PRELOAD does not work and LD_DEBUG shows nothing

answered Sep 26, 2023 at 18:21

19 votes

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How to forward traffic between Linux network namespaces?

answered Sep 20, 2017 at 18:16

18 votes

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Is there a way to use sshfs for a machine "two jumps away"?

answered Jan 21, 2019 at 20:34

17 votes

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/etc/fstab fails to bind mount on boot, but running mount -a works correctly

answered Dec 9, 2018 at 0:21

17 votes

Accepted

What does "if1@if2" mean in interface name in output of "ip address" command on Ubuntu

answered May 20, 2018 at 8:25

17 votes

Accepted

Why is my username/hostname in the SSH public key?

answered Oct 20, 2019 at 1:08

17 votes

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nftables remove all rules in chain

answered Jan 19, 2020 at 10:15

16 votes

Accepted

Installing Debian 10, upgrade to stable later?

answered May 5, 2019 at 18:51

16 votes

Accepted

Under what conditions exactly does SIGPIPE happen?

answered Mar 25, 2018 at 0:51

Stack Exchange Network

761 Answers

Using `openssl` to display all certificates of a PEM file

bc: Why does `ibase=16; obase=10; FF` returns FF and not 255?

root cannot write to file that is owned by regular user

Copying files with certain extensions with scp

Using mv command to move a file from one folder to another one - Strange example

How can I print a '@' in a Linux shell?

What is the difference between 'contrib' and 'non-free' packages repositories?

Netcat - How to listen on a TCP port using IPv6 address?

nftables whitelisting docker

Regain sudo access after nuking secondary groups

Unable to kill process with PID 1 in docker container

Use uniq to filter adjacent lines in pipeline

How to find unspoofed MAC address of NIC

How --set-mark option works on Netfilter (IPTABLES)?

Bridged interfaces and VLAN tags

Packet processing order in nftables

Why not ssh.service but sshd.service?

I see pids above 400,000 why is that? Does it indicate something is wrong?

Disk usage confusion: 10G missing on Linux home partition on SSD

When and how to use chain priorities in nftables

Why is my LAN cable opening an UDP port on my computer?

LD_PRELOAD does not work and LD_DEBUG shows nothing

How to forward traffic between Linux network namespaces?

Is there a way to use sshfs for a machine "two jumps away"?

/etc/fstab fails to bind mount on boot, but running mount -a works correctly

What does "if1@if2" mean in interface name in output of "ip address" command on Ubuntu

Why is my username/hostname in the SSH public key?

nftables remove all rules in chain

Installing Debian 10, upgrade to stable later?

Under what conditions exactly does SIGPIPE happen?