Questions tagged [linux]
These questions are about Linux in general – NOT specific to a particular distribution. If the question just happens to be in a Linux environment, please specify your Linux distribution in the body of your question, but do NOT use the “linux” tag.
38,081
questions
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USB serial port driver
Currently I writing new driver for wp7607 base on GobiSerial and qcserial , in my driver I have only defined the init(), exit() and probe() functions but I can still use the AT command with just such ...
- 1
0
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0
answers
38
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My linux is using 100% of my ssd for no reason
The largest folders I have on the system
WARNING:
Full balance without filters requested. This operation is very
intense and takes potentially very long. It is recommended to
use the balance filters ...
-2
votes
0
answers
24
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how to fix this error in kali liux [duplicate]
──(root㉿kali)-[~]
└─# apt-get update
Get:1 http://old.kali.org/kali sana InRelease [20.3 kB] ...
-1
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0
answers
30
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Stuck on black screen log when trying to boot into linux
I'm trying to install Linux on to my computer. The distribution I'm currently trying to install is Ubuntu 22.04.3 LTS but I've had the same issue when trying to install Kali and older versions of ...
- 1
1
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0
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15
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Cannot reach internet from wireguard connection in networking namespace
I am following this blog post to experiment with wireguard and networking namespaces on my machine running the Linux Kernel version 5.15.32:
https://www.ismailzai.com/blog/creating-wireguard-jails-...
- 79
-1
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3
answers
78
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How to mark things I download automatically executable?
I spend a lot of time downloading things that I am going to execute, without a doubt, after having downloaded them. Out of the 900-ish files in my download folder right now, roughly a third is stuff ...
0
votes
1
answer
8
views
How to build a UBIFS image to make use of the remaining space of MTD?
I am working on an embedded Linux system (kernel-5.24) and the development host is running WSL2 in Windows.
There is a NAND FLASH of 128MB in the embedded system (PEB is 128KiB, page size is 4096 ...
- 327
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votes
0
answers
22
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Not cooking USB3 ports on Linux?
I'm still using an 11" Linux notebook bought in 2016 as a beater and "kitchen workstation". It has a single USB3 which works fine in itself but has a tendency to get cooked. I say ...
- 171
1
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0
answers
35
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Linux crashes randomly
In my Linux operating systems, I always have a problem, that my computer or desktop environment(not sure) is crashing randomly. For example, I'm opening settings, then my screen turns into a terminal ...
0
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0
answers
30
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Systemd service wait wifi adapter to plug in
I have a systemd service that change MAC address every boot to wifi adapter. Systemd service works fine. I want this systemd service not wait 1m 30sec when the wifi adapter is not plug in the usb. I ...
0
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0
answers
20
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How can I assign a mimetype to a file extension?
Sometimes my .tsx files are assigned the mimetype application/javascript. But I'd like my .tsx files to always have the mimetype text/plain.
How can I achieve this?
- 281
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1
answer
34
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"mv" command with asterisk character ("*") executed using "ssh"
I am inexperienced with Linux, but I am learning every day.
I have this command.
ssh admin@$host mv repo/environments/qa/* /repo
Does this * character mean that EVERYTHING in the environments/qa ...
0
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0
answers
11
views
Computer freezes such that ctrl-alt-f3 doesn't work; what are the alternatives for recovery?
It seems most questions I find is about ctrl-alt-f3 not working at all. However, that's not the case for me, it generally works. However, sometimes when playing video games, the view freezes (albeit I ...
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0
answers
11
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clone uboot and embedded linux fw (openwrt) to a single binary image
I have my embedded device with the following partition:
# cat /proc/mtd
dev: size erasesize name
mtd0: 00030000 00010000 "u-boot"
mtd1: 00010000 00010000 "u-boot-env"
mtd2: ...
- 301
0
votes
1
answer
27
views
Name Server Daemon (NSD), possible to use PostgresQL/MARIADB as backend for DNS zone data?
Is it possible to store DNS zone data in a database with NSD? I have not found any documentation for that.
- 163
2
votes
8
answers
300
views
Replace last word occurrence in file
The scenario is I want to comment out the last occurrence of a word in shell script using sed.
Assume I have temp.sh with the following content:
Abc 123 Abc
Sdf 2
Abc
Abc
Utyr
Qww
I want to replace ...
- 23
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0
answers
31
views
User suddenly changed to nobody, and is restored when changing permission to a file
I was learning about git internals, doing basic commands, when suddenly I encountered this error: fatal: detected dubious ownership in repository at... I then noticed that the user is nobody. I have ...
- 1
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0
answers
16
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lilo: Fatal: raid_setup: stat("/dev/nvme0n1")
I have booted Debian Live CD, and I am trying to create lilo boot record on my disk
The disk partition is mounted as /mnt/root and has the linux kernel and /etc/lilo.conf:
boot=/dev/nvme0n1
root=/dev/...
0
votes
0
answers
8
views
avahi-daemon runs with wrong hostname
I have a problem on one device where the avahi-daemon is running with the wrong hostname and it is messing up my system.
The hostname is ABC-100001 but when I check the process list it shows that
...
- 101
0
votes
2
answers
66
views
Linux How to find the id of a user who ran some particular command using sudo [duplicate]
In shared environment where multiple users have sudo account, I want to find out underlying user id (not a sudo account) details who has invoked particular script. Thanks.
I tried below but it does ...
- 1
0
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0
answers
7
views
SO_TIMESTAMPING: Overhead?
I use SO_TIMESTAMPING with SOF_TIMESTAMPING_RX_SOFTWARE to generate software timestamps for TCP and UDP streams.
Is it known what's the overhead for using this flag? Does the throughput or the latency ...
- 203
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0
answers
10
views
nmtui unable to activate wireless connection, nmcli dev status says wifi unavailable
I'm very new to using linux. When I try using nmtui to connect to wifi, the only option in "activate a connection" is wired connection. When I use nmcli dev status, it outputs wlo1 wifi ...
- 1
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0
answers
37
views
Problem with root fs
I am trying to make my own linux. After I compiled it, I moved bzImage and initramfs to the /boot directory so the directory structure looks like:
/
boot
-bzImage
-initrd.img
When i then tried to ...
- 1
0
votes
1
answer
55
views
zsh: no such file or directory error even though the file exists [duplicate]
I'm getting an error while executing a binary that the binary cannot be found. I can see it using other commands.
>> ls -alh ...
- 3
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0
answers
13
views
SO_TIMESTAMPING: Which timestamp is used if we read multiple packets at once?
Given Linux is used and packet timestamping is enabled with SO_TIMESTAMPING for a TCP socket and we read now some data, what timestamp will be reported if the byte-stream which we read was merged out ...
- 203
2
votes
1
answer
56
views
Softirq delayed because of the Heavy I/O Operation
I am trying to copy the contents of a 1 GB ISO file (stored in USB) to my internal storage. As part of a test when i am doing repetitive copy operation from USB to my hard drive continuously I observe ...
- 21
0
votes
1
answer
61
views
freeipa client installation in ubuntu
I am installing freeipa client in ubuntu VM, but getting the following error.
failed to obtain host tgt: major (458752): no credentials were supplied, or the credentials were unavailable or ...
0
votes
0
answers
29
views
How to determine which Compose file is in use?
My locale is set to "en_NZ.UTF-8". There is no directory by that name listed by ls "$(nix eval -f '<nixpkgs>' --raw xorg.libX11)/share/X11/locale/", and X applications don't ...
- 50.9k
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1
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21
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Optimizing Disk I/O Performance in Linux: Advanced Techniques for High Throughput and Low Latency
I'm currently working on a Linux-based server with high disk I/O demands, and I'm looking for advanced strategies to fine-tune the system for optimal performance. While I've implemented basic ...
- 11
-2
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2
answers
68
views
Store part of file name as variable in Linux Shell
Current File Name: 017251004_2301941_5193716.xml
Require num: 5193716
I need to store the number after last _ and before .xml into a variable.
Can someone please provide the syntax for same.
I tried ...
0
votes
2
answers
28
views
Restrict all already running processes to a range of CPU cores
I've got an AMD 7950X3D CPU which has 32 total logical cores, 16 of which (0-15) have access to extra cache. To optimize my system for gaming while multitasking I want to run Steam and all the ...
0
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0
answers
20
views
Grub2 loopback command out of memory
I have an asus rog strix g614 with 32gb ram. I installed fedora 38, and with it grub version 2.06. I made an ext4 partition where I put an image file of Ubuntu so to load it with Grub. I have this ...
- 101
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0
answers
23
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Linux fundamentals [closed]
How you can strong textUse the cat command to find the flag number displayed in the flag.txt file of the Public directory
0
votes
1
answer
19
views
pjllib install on ubuntu
Feel like a total noob,but could someone please guide me on how to install the printer job language commands found at
PJL-lib
I am not quite sure how to compile this to run the pft command. I am on ...
- 39
2
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0
answers
23
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Linux reboots with no panic when booting SMP configuration from kexec
I'm working on a project involving kexec. I have it working on some of our hardware platforms. On one platform, I'm getting sudden reboots with no panic dump during SMP setup:
[ 25.219028] smpboot: ...
- 121
3
votes
4
answers
146
views
How does Linux know there is a MBR partition table?
You might think this question is trivial because an msdos partition table MBR ends with 55 AA (hex). But it's not because disks formatted as FAT32 (with no partition table) end with 55 AA too.
I ...
- 873
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0
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15
views
Driver Bluetooth Debian 12 [closed]
Buen día gente,
Tengo un problema con el controlador de Bluetooth, no se porque Debian no me lo reconoce, he instaldo otros discos con otras distribuciones por ejemplo MX Linux y lo reconoce perfecto, ...
- 1
-1
votes
1
answer
64
views
rsync takes long time to start
I'm running on Ubuntu 18.04 and the rsync command takes a long time to start. Given a file to transfer of 0 byte, it still takes more than 5 seconds to transfer.
Version of rsync: 3.1.2
time rsync ...
- 121
1
vote
0
answers
27
views
Why does setreuid have this limitation on setting ruid to current value of suid?
According to the docs for setreuid:
Unprivileged processes may only set the effective user ID to the real user ID, the effective user ID, or the saved set-user-ID.
Unprivileged users may only set ...
- 195
1
vote
1
answer
43
views
systemd ignores /etc/hostname at startup
Our team works with a custom, barebone linux distro for an embedded device, and it uses systemd.
The system used to rely on SystemV init scripts until stuff got migrated to systemd (including network ...
- 155
0
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0
answers
28
views
Fedora 38 x86-64 Live environment doesn't boot past Grub
The issue: I tried another distro for Sh*ts and giggles. Downloaded the Fedora ISO again and passed the checksums. However, it doesn't boot passed Grub. I was on Fedora 38 on this laptop before.
What ...
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0
answers
22
views
pkg-config cannot find any libraries without manual intervention
I am not a C++ developer or typically work with Conan, CMake, or Makefiles. The first time I had heard of pkg-config was yesterday when conan started erroring on it, unable to resolve a gl package.
I ...
- 101
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votes
1
answer
36
views
Remove all lines after line contains? [duplicate]
I have a script which I want to delete every line after a specific line.
I have a command, but it just wipes the entire file?
sed -n '/twm &/q;p' ~/.xinitrc > ~/.xinitrc
Convert something like:
...
- 101
0
votes
1
answer
19
views
CentOS Stream 9 image has predictable interface naming disabled
I'm using a qcow2 image from here.
Note the net.ifnames=0
cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/boot/vmlinuz-5.14.0-366.el9.x86_64 root=UUID=<uuid> ro console=ttyS0,115200n8 no_timer_check ...
mockitodorito
1
vote
0
answers
32
views
Is it possible to limit the accessible fonts for some GUI (GTK) program?
Because of different reasons, it is useful to limit particular program from accessing all installed in the system fonts.
For example, some programs works very slow when big amount of fonts are ...
- 283
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votes
0
answers
20
views
How can i fix dropbear-initramfs filtrated port on boot?
I have installed dropbear-initramfs (last version) on my physical server but it works on random, when i restart it, the port i set can be open or filtrated. I red a lot about it and found out that it ...
- 1
1
vote
3
answers
93
views
How to rename large number of randomly named file at one go?
In a directory I have large number of randomly named '.wav' files. For example
090913yui.wav
jiyafa123.wav
.
.
.
awe-6rt.wav
I want to change the file names to
file1.wav
file2.wav
.
.
and so on
Can ...
- 157
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votes
0
answers
44
views
How to rename connected computer monitors in linux using wayland?
I have two identical computer monitors, both from the same manufacturer, with matching models and revisions. These monitors are connected to a Thunderbolt 4 docking station via DisplayPort, and the ...
- 185
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0
answers
56
views
Samba file/folder deletion error after Debian 12 upgrade
I recently installed Debian 12 for Raspberry Pi and configured a Samba server. But now when I delete a file or a folder over the network I get an error, Samba object not found and then the file or ...
- 1
0
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1
answer
39
views
linux ls -l ACL +, . , gap How to make gap
drwxr-xr-x+ 4 root root 4096 Sep 21 04:00 test << +
drwxrwxrwt. 10 root root 250 Sep 21 04:03 tmp
drwxr-xr-x. 12 root root 144 Sep 19 03:42 usr << .
drwxr-xr-x. 20 root ...
- 1