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.
0
votes
0answers
12 views
Why is my FWKNOP SSH set up not working?
I'm learning about port knocking and SPA. I'm following along with a guide, everything seems to be working fine until I close down my ports on my server.
I am running two ubuntu servers on VirtualBox ...
2
votes
1answer
11 views
access windows shared files from linux (case insensitive)
I have a python application (deployed on centos) which searches for files in a shared path on (windows)
the windows paths named like below (upper and lower case)
\\shared\PDFs\MyFolder\SomeFile.txt ...
0
votes
0answers
10 views
mount proc filestsrem inside namespace
I had a rootfs of a linux os (like ubuntu or centos) and removed mount command inside that .
now, is there any way to mount proc filesystem with nsenter or unshare or any other command inside a ...
0
votes
0answers
12 views
Reading filesystem type at boot into BASH variable
I have a /etc/rc.d/S11 link to a /etc/init.d file that is trying to set a bash variable of the file system type of a given blkid entry.
root@OpenWrt:/# blkid /dev/mmcblk1p3
/dev/mmcblk1p3: UUID="...
2
votes
1answer
16 views
Drives not receiving UUID after moving SATA ports
I have a personal Ubuntu server with nine drives:
SSD for OS
four 4TB drives for one BTRFS raid10 array
four 8TB drives for another BTRFS raid10 array
I decided to clean up the cabling today and ...
-3
votes
1answer
44 views
what is a system tool?
I frequently come across the term system tool, so I wanted to understand the exact meaning of it in Linux.
Which of the following three explanations of a system tool in Linux is correct?
Is a system ...
0
votes
0answers
8 views
Obtaining webcam images in rawest possible form?
My laptop is running Ubuntu. All of the applications that I have seen to capture from the webcam produce images that have been passed through brightness, hue and contrast adjustments. Is it possible ...
1
vote
0answers
10 views
How to identify the disks of a Linux virtual machine in VMware vSphere 6
I have a virtualized RHEL7 server with vsphere 6, I need to remove some virtual disks from vCenter that are presented to my virtual machine (rhel server) that are no longer being used by the operating ...
1
vote
0answers
11 views
XFCE Session & Startup Application terminal command to turn on and off
In XFCE4 I can create my own custom start-up commands at Settings Manager > Session & Startup > Application Startup and turn them on or off by clicking on the command's check-box.
Is there a ...
2
votes
1answer
25 views
Can terminal parameter changes on the slave side be detected on master?
A process (creator) creates a pseudo-terminal master/slave[/dev/pts/1] pair. Another process (consumer) opens /dev/pts/1 and changes the serial terminal parameters with tcsetattr.
Is there a way for ...
4
votes
2answers
73 views
What is the environment variable XDG_VTNR?
Almost every page I've found is about to automatically start Xorg after login wihout explianation, take ~/.bash_profile for example:
if [[ ! $DISPLAY && $XDG_VTNR -eq 1 ]]; then
exec xinit
...
0
votes
1answer
23 views
Specifying Depends correctly in debian/control file
I'm building a runtime-shared-library package libfoo0.deb where 0 here is a major package version and adhering to the naming conventions specified in the Debian policy.
The problem is I want to ...
1
vote
1answer
45 views
reading multiple files in while loop
I have a list of .gz files,like:
abc-1.1.0-abc.tar.gz
abc-1.2.3-hfc.tar.gz
hfg-1.8.9-jdh.tar.gz
Content of file_name:
abcd_name_fb
hsgdh_name_cd
in my scipt, i'm capturing the strings '1.1.0,1.2.3,...
1
vote
0answers
16 views
why iptables marked but not route as my except
I want to control the route packets of my browser using domain name , let traffic packets within special domain names through VPN ,and other traffic packets without special domain names through ...
0
votes
0answers
13 views
Permission denied when i use crunch in terminal
I wrote this line in Terminal :
crunch 6 6 123456789 -o /root/Desktop/timy.txt
and it said this
chunk1: File START could not be opened
The problem is = Permission denied
0
votes
1answer
13 views
How to write shell script to execute rsync each time I plug in my external ssd?
I want to execute rsync command which syncs my local directory with the external ssd. I followed the instructions given in this link. to execute some command based on udev rules. This shows how to run ...
0
votes
0answers
42 views
How write a bash script that compiles and executes my python script?
It was my homework to write some python script (that performs a padding oracle attack on a web service). Afterwards, our teacher asked us to write a bash script which compiles and executes my source ...
-3
votes
0answers
12 views
Pipe Linux commands to sort the top 5 CPU processes running under the user root [on hold]
Use ps -aux, grep, sort, tr, and head to build a command that shows the 5 highest CPU processes that are running under user root
0
votes
0answers
18 views
Why allow_url_include is Disabled? Kali DVWA
I have a problem with DVWA on Kali Linux.
Errors:
PHP function allow_url_include: Disabled
reCAPTCHA key: Missing
I installed according to the following commands:
curl -fsSL https://download....
0
votes
1answer
30 views
Error while attemping to run OpenRCT2 on Debian Stretch. libicuuc.so.60 cannot be opened: No such file or directory
I've been trying to get OpenRCT2 working on my laptop, which runs Debian Stretch (9.9 amd64), and I'm running into an issue. When running the executable after extracting OpenRCT2 in a folder, it tells ...
1
vote
0answers
5 views
Full paths with rsnapshot and rsync server at source side with --relative option are truncated - how to preserve full source paths?
When using rsnapshot with following configuration:
#/etc/rsnapshot.conf
snapshot_root /backup.rsnapshot/
rsync_long_args --relative
backup user@laptop:/home/user/test/ ./
a directory /backup....
1
vote
0answers
43 views
How to install Guest Additions with a Oracle Gnu/Linux guest on VirtualBox?
I have a Linux virtual box and want to install Guest Additions. I've successfully mounted the iso. But now what...?
How can I access the mounted cd-rom in the terminal of the virtual machine as to ...
0
votes
1answer
10 views
Icons Too Small after Installing Guest Additions iso VirtualBox
After I downloaded the Guest Additions CD Image onto my Ubuntu VM on VirtualBox, the screen will change to full screen but the icons and UI layout are very small. They do not have the proper size - (...
0
votes
3answers
41 views
Special “copy and rename” case
I have a deeply nested folder structure in which there are hundreds of files called data.log. I need a script to rename each of these data.log files according to the name of the parent folder they are ...
0
votes
0answers
27 views
Linux Kernel boot stucks at “Starting kernel …”
I am facing some troubles while booting kernel. U-boot boots and gets stuck at
Starting Kernel....
Boot parameters are as below.
setenv mmcroot '/dev/mmcblk0 rootwait rw rootdelay=5 mem=256M'
...
2
votes
1answer
45 views
Replace VI macro with Linux equivalent
My file arrives on a Linux server and contains ^M characters when seen in VI and the file format = unix, (ff=unix)
I want to turn lines 1-4 into line lines 9 - 10.
My vi macro solves my problem.
/\r/...
1
vote
0answers
13 views
Can't connect to network when creating two network namespaces for two NICs
I'm exploring A.B's comment in this question as a workaround to my issue.
As a summary, so you don't have to read that whole question: I try to setup two NICs in two separate network namespaces to ...
2
votes
0answers
27 views
How can I send duplicate packets, one instantly and one with a delay?
For testing on Linux, I can create duplicate packets where both are sent instantly with the following command:
sudo tc qdisc add dev IFACE root netem duplicate 100%
How can I create duplicate ...
0
votes
2answers
38 views
Searching whole system for files with specific inode
I technically know how to do all these things, but combining it is problematic.
Inode is saved in first line of text file (I can eventually read it directly from file), I need results saved to the ...
0
votes
2answers
30 views
How extract row based on some value in columns?
I have a bam file as below (it is only a subset), I would like to extract rows based on chr (2 in the third column) and start position (13107 to 14348 in the fourth column).
Input:
D00823:135:...
6
votes
4answers
390 views
How to Pin Point Large File eating space in Fedora 18
This is taking up my time, and I can't determine exactly what file is eating up my disk.
Firstly I used df command to list my directories:
devtmpfs 16438304 0 16438304 0% /...
-1
votes
1answer
22 views
Is it ok to combine machines with DNS server management and machines that do host lookups through a hosts file?
We have a cluster of Linux machines.
DNS of these machines is managed by a DNS server (a Windows machine with DNS records).
Now we want to add an additional cluster with Linux machines
that would do ...
-1
votes
0answers
29 views
Can not ssh server with `debug3: fd 1 is not O_NONBLOCK`
I have a CentOS 7.5 Dedicated Server, I found it can not ssh login now:
and I checked the sshd service and firewalld is closed.
this is my login in my PC ssh root@x.x.x.x -vvv:
debug2: channel 0: ...
0
votes
2answers
21 views
Linux Memory Allocation/De-allocation
will the pgfree/s command happen without pgscand/s? How and
what is the difference between pgfree/s and pgscank/s?
0
votes
0answers
16 views
Need to convert output to curly braces and quotes [duplicate]
host1:3183,host2:3183,host3:3183
I got above output from a different command. But I need to convert it to below
{
"host1",
"host2",
"host3"
}
0
votes
0answers
12 views
How can I disable Zathura's statusbar by default?
I'd like to hide the statusbar by default when opening Zathura (Which is normally done with ^n)
0
votes
0answers
2 views
What could cause slow binfmt-support.service during boot?
I have a Fujitsu LifeBook with Lubuntu 18.04.2 which is booting very slow. Here's the output from systemd-analyze blame | head -n20
28.869s systemd-journal-flush.service
24.957s dev-sda1.device
14....
1
vote
0answers
13 views
Move (mv) file that starts with a hyphen (-) [duplicate]
I have a file called -my-file-name.txt. I'm trying to move it using the mv command, however it fails because the hyphen in the name is acting like an option.
mv -my-file-name.txt /some/new/folder
...
0
votes
0answers
73 views
How to stop bash script from running at login
OS Debian Stretch
Jack and Pulseaudio script
The script below was executed and I can't find out how to stop it permanently. The script starts a few programs at login. The script is saved in /home/...
1
vote
1answer
19 views
Installation of Firefox on Alpine Linux
I'm trying to install Firefox on Alpine Linux. I ran
$ sudo apk add firefox
And a few hundred MBs later, it installed.
However, when I ran firefox, it crashed with symbol not found errors and ...
2
votes
1answer
17 views
How to utilize Windows 10 Connection Sharing to Access ZScaler protected Websites on Linux / Ubuntu 18.04
How can I use ZScaler to access protected websites via Ubuntu without a dedicated Ubuntu client?
4
votes
1answer
21 views
How to robustly switch pulseaudio output device from command line?
In Ubuntu and probably other distros there is a graphical thing to switch the audio output device. I have tried to write a command line tool that does the same thing, but it doesn't always work.
What ...
1
vote
2answers
37 views
Save output of multiple commands to the same file [duplicate]
For example whoami and date. I can do this that way
whoami>/home/user/folder/file
date>>/home/user/folder/file
But i'm sure it can be done in one line without typing path two times. I have ...
0
votes
2answers
35 views
Windows on SSD, Linux on HDD. No dual-boot. Separate bootloader devices. Will there be problems?
I have a 1 Terabyte HDD which is currently empty storage space for Windows which is on SSD. I want to split the HDD to two 500GB partitions and use first half as Windows storage space and the other ...
0
votes
0answers
42 views
CentOS Moved entire root directory (mv -v /*) [duplicate]
Dont laugh at me but I ran:
mv -v /* /home/dropbuyexpress
instead of
mv -v * /home/dropbuyexpress
Luckily my ssh is still on.
Is there any way that I can get mv/cp working?
OS: CentOS 7
Below ...
-1
votes
0answers
29 views
I want to start an email hosting solutions on my own server [on hold]
I want to start an email hosting solutions on my own server. Something which Migadu ( https://www.migadu.com/en/index.html ), google apps(email) for business or Zoho does. I am not sure how to get ...
0
votes
0answers
19 views
Systemd service to restart only 5 times on failure
Below is my service, I have a simple utility which upgrades the service, I have enabled this to run on boot
[Unit]
Description=Firmware Update Service
[Service]
StartLimitBurst=3
StartLimitInterval=...
0
votes
0answers
25 views
How to download wine-tkg manually to play FIFA 19?
I am using Linux Mint 19.1 and I want to install FIFA 19 in it. I went to lutris.net and I found out that I have to install wine-tkg for esync features. The download link provided in there doesn't ...
0
votes
2answers
12 views
Tomcat9 Enable Manager Page for multiple services
To enable manager page for some webservice running on port 8999, i have copied the manager directory from webapps to port 8999's appbase i.e., webapps2.
The manager page opens fine on port 8999 but ...
0
votes
2answers
68 views
Linux awk grep from file 1 into file 2
I have regex in file 1
.*8912.*.*.*.*81415444.*
.*8912.*.*.*.*81415444.*
.*8912.*.*.*.*81415444.*
.*8912.*.*.*.*81415444.*
.*8912.*.*.*.*81415444.*
.*8912.*.*.*.*81415444.*
.*8912.*.*.*.*81415444.*
.*...
