All Questions

0
votes
1answer
38 views

Centos 7 python update package python-2.7.5-80 rpm

I am looking for this RPM python-2.7.5-80.el7_6.x86_64.rpm to address the security issue. yum update not getting this package? Any idea how to get this version of rpm for centos 7? Thanks Update ...
-2
votes
0answers
49 views

Linux suspicious activity

Actually, I am new to Linux. I am about to write a use case on linux based on suspicious activities. I have found a user has been added and deleted with in a short period of time. I just want to know ...
1
vote
0answers
16 views

Sync multiple PCs every boot via home LAN (local files update old version on server)

I need your precious support and advices for a kind of setup for my home computing. So... I have two laptops and a desktop that I use same (or different) times. Every computer has a different distro (...
4
votes
1answer
72 views

What checksum algorithm is used by Version 5 Unix?

I can't figure out, what algorithm was used in Unix V5 and V6 for the sum command. At first, I thought that it is a simple sum of bytes modulus 2^16. However for a string "1111111111\n" repeated 320 ...
1
vote
2answers
13 views

Issue disabling internal monitor

I am running Debian 9 with LXDE on a LattePanda and the main monitor is defaulting to the Internal Display that does not exist. I want to disable the internal display so each time it boots up to the ...
1
vote
2answers
32 views

swap text before and after a character [on hold]

I have a large text file code.txt with the following equalities oReservist.Role = Sheets("RECAP").Cells(ligne, 2) oReservist.Surname = Sheets("RECAP").Cells(ligne, 3) ...
2
votes
2answers
21 views

How to enable firewalld without breaking application?

I have multiple CentOS 7 machines in the same LAN. Each one is communicating with a few others and having one or more applications installed that each listen on various ports (database, webserver, ...
1
vote
0answers
16 views

What is the equivalent of systemd-analyze in CentOS 6?

systemd-analyze is the command to investigate time taken by each service during boot in CentOS 7. Is there a similar utility in CentOS 6 for doing this? update: extending the question after Lucas' ...
1
vote
1answer
37 views

What happened to the Midnight Commander support for marking files?

In 2010 someone requested that Midnight Commander allow marking files by pressing Shift+up and Shift+down, followed by moving up and down respectively. This feature was implemented in version 4.7.3. ...
1
vote
1answer
17 views

Sometimes the GUI responds slowly - or not at all - or appears to crash - but the cursor still responds quickly. How does the mouse pointer work?

How is the mouse cursor implemented in the X.org X Windows system? Specifically, how should we understand these error cases: 1) I remember sometimes seeing the entire GUI become slow and stutter or ...
2
votes
1answer
19 views

logrotate with only size option does not rotate. This is inside Alpine docker container

I have below configuration for access logs cat /etc/logrotate.d/logrotate_nginx.conf /nginx/access/logs/*.log { rotate 2 size 1k missingok compress notifempty copytruncate } There is no ...
0
votes
0answers
17 views

ACL vs Groups, Which one is better? [duplicate]

i recently heard about ACL in Linux, and read that we can allow permissions to specific users using ACL. But my question is we can do the same using the groups then why do we use ACL or is it me who ...
0
votes
0answers
16 views

CMake + Ninja : argument list too long

On Kubuntu 18.04 with CMake 3.10.2, Ninja 1.9.0 (from git) and gcc 9.1.0 I've got error fatal: posix_spawn: Argument list too long while compilation of my project. Google say that this problem was ...
0
votes
1answer
30 views

What does `bind '“\C-i”: menu-complete'` do?

I would like to fill out a command which expects a file argument, by alternating the files in the current directory. So I followed Gilles' reply Bind the Tab key to the menu-complete command ...
-2
votes
0answers
24 views

How the complete plugin for Nagios should look like?

I am trying to write my lifetime first ever plugin for Nagios, and it looks like that: #!/bin/bash ping 192.168.0.33; Unfortunately it does not work when I insert it in Nagios. I cannot figure out ...
1
vote
1answer
48 views

how to split the matching file pattern files in same directory using if else or for loop condition?

I am having 5 types of files in same dirctory.then i want to split all the files in the same directory and i need to give the splitted file name as dynamic(original file name + additional extexnsion). ...
0
votes
0answers
18 views

Prevent Ubuntu 18.04 from registering all network adapters in dns zone except for a valid interface

Ubuntu machines have enp0s31f6 and wlp2s0 network interfaces. I have a mess in dns zone where resolving a machine name results to 172.17.0.1 or 172.18.0.1 or anything random because multiple A records ...
0
votes
0answers
26 views

Linux Mint bleachbit installation

I have two machines with the latest version of Linux Mint installed. I installed bleachbit (https://www.bleachbit.org/) without problems. I installed bleachbit on the second machine and the menu ...
0
votes
2answers
22 views

How to delete rogue cron job [duplicate]

Hello everyone, My machine has been hijacked by a bitcoin miner. he has a cron job that runs every 2 seconds. Using crontab -e to delete it doesn't work because it respawns soon after. ...
0
votes
0answers
8 views

Authentication nslcd with ssh key from AD

Nslcd support ssh key authentication, i can login correct with password. But with ssh key i can't login. Can with map or filter get the ssh key from AD ? Cheers
1
vote
0answers
19 views

Using iconv to convert utf-8 characters to the closest ASCII character

I can use the iconv command to "translit" a utf-8 string to an ASCII-only string with characters being replaced with their closest ASCII character. However, my problem is that I need the resulting ...
9
votes
2answers
420 views

Why does a brace command group need spaces after the opening brace in POSIX Shell Grammar?

TL;DR: Why does POSIX brace group need spaces after { reserved word but subshell doesn't after reserved word (? POSIX shell grammar defines brace group and subshell as follows brace_group : ...
1
vote
2answers
24 views

switch between multiple versions of software

I am using update-alternatives to configure multiple versions of software installed on my machine. The software has multiple executables A, B and C. To switch between versions I need to install and ...
1
vote
1answer
37 views

Time measurement in the Linux kernel

I want to measure time intervals in my kernel. I know nanoseconds are not really precise but I need more precision than milliseconds. There are many many functions to get a time. Jiffies, time of day,...
3
votes
1answer
49 views

How to set ntpd server time without referencing another server?

I have an embedded system which synchronizes UTC locally using NTP. One of the clients in the system acts as time reference for the other clients. I guess you could think of it as stratum 0. A program ...
-4
votes
0answers
32 views

How to rename multiple filenames in single command or script in Unix?

I have a list with filenames, e.g.: 1. 123_abc_456.pdf 2. 789_xyz_459.pdf 3. 497_ssf_7745.pdf 4. 852_shr_47.pdf I would like to change 3rd column number and replace it with the middle column of ...
0
votes
1answer
41 views

Installing pandas under python 3.7.3 in debian 9

I have a problem installing Pandas under Python 3.7.3 on a MOXA linux computer running Debian 9. It has a Armv7 Cortex-A8 600-1000 MHz processor. I tried: sudo apt update sudo apt ugrpade sudo apt ...
0
votes
0answers
38 views

How to run a process in background on startup?

I'm trying to run a process(myfile) on startup on my yocto linux board, but I'm getting either IOCTL or segmentation fault while I use nohup or & to run in background. I could run myfile in ...
0
votes
0answers
12 views

Command storcli/df hung in ESXi shell [on hold]

Getting some storage performance event from one ESXi,messages as below, would like to collect Log of RAID controller,however it hung when run command "df" or "storcli show" "esxcli storage ...
0
votes
0answers
10 views

Using KDE activities to have different window layouts

Sorry if this is obvious, I am having a really hard time understanding exactly how I can use activities. I have a workstation that I use in both a 1 monitor, 2 monitor, and 3 monitor set up, ...
0
votes
1answer
26 views

delete everything before specific position in a text file

I have file "report.csv" . This report is generated based on few parameters which can range from 1-10. So the report.csv has all the parameters printed in it first and then , the main header and the ...
0
votes
0answers
24 views

rsync slows down over the daily images

I am using rsnapshot which is using rsync in the background for creating backups of my data. I logged the time rsnapshot runs and there are two strange things: At first it slows down with every daily ...
0
votes
2answers
41 views

How to Aggregate and get group count in specific column from text file by perl?

I have a big text file(with 15 lines) in this format (srip dip sport dport .....) I would like to group distinct first column and get the group counts, input file: 10.10.10.1 10.10.66.150 60761 502 ...
0
votes
1answer
23 views

Join command is not working as expected

I am trying to join two files with different rows but one element in common. FILE1: 1/temperature 2/rainfall 3/snowfall 4/windspeed 5/winddirection FILE2: 2008-10-01/1/68 2008-10-02/2/6 2008-10-03/...
0
votes
2answers
41 views

Bash script to log the output of the script to a separate log file

I have written a scipt(example.sh) to echo the date and system uptime on stdout. At the same time I want this script to log this output into a log file. Here's my code echo `date` echo `uptime` And ...
0
votes
0answers
7 views

What distro is compatible with Samsung's Galaxy ,Sm-j31-2017 [on hold]

Buildroot chroot, framework anlux. ParrotOS
7
votes
3answers
65 views

Is it possible to change my display to amber monochrome?

I know this sounds really dumb, and I don't plan on using this much, but is there a way with xrandr or something similar to make my display show the equivalent of grayscale but using a color instead ...
0
votes
1answer
20 views

No WiFI, Dell XPS 15 9575

Put simply WiFi isn't working on the laptop. The network card which is of the ath10k variety has been bad in the past, but now it is simply not working. The laptop is running linux mint 19.1. I have ...
0
votes
0answers
11 views

Random lines during screen recording playback

Every time I record or screencast my desktop, once I play it back I get random lines appearing now and then, no matter what media player I use. They're either black or they show fragments of my ...
0
votes
0answers
43 views

Strange result with SED Pattern and Hold space

I have the following SED Code, that extracts a username along with their date of birth and displays it on one line. User name and date of birth are are two separate lines. The issues is that hold ...
1
vote
1answer
18 views

Crash when changing back to tty1

I'm using arch linux with mate-desktop. Whenever I press ctrl+alt+fk, where k=2,...,9 I switch to a tty. However when I want to return I do ctrl+alt+f1which results in a system crash. After that I can'...
14
votes
2answers
3k views

I'm reinstalling my Linux desktop, how do I keep SSH logins working?

Long ago I generated a key pair using ssh-keygen and I used ssh-copy-id to enable login onto many development VMs without manually having to enter a password. I've also uploaded my public key on ...
0
votes
0answers
24 views

How to make alphabetical sorting work with whitespace?

I am on Ubuntu 19.04 ls outputs the following, and this is how it appears in nautilus as well Arca - Arca Arcade Fire - Funeral Arca - Mutant Obviously, this should be as below. Is it possible to ...
0
votes
0answers
20 views

Why does `bindkey “^[[1;5C” forward-word` affect behaviour of ctrl+left and what does `^[[1;` mean? [duplicate]

I recently decided to try zsh, coming from bash. One shortcut that I often use in bash is ctrl+arrow to walk through words. So I found this answer saying how to set those in zsh. I did bindkey "^[[1;...
0
votes
1answer
22 views

Purge all data on remote server with rm command

Let's say theoretically, I've been using a cloud server instance (such as an AWS EC2 Linux instance) and I want to delete the instance, but before I delete the instance I want to purge ALL the data ...
1
vote
1answer
86 views

Why does opening /proc/cpuinfo take 17 ms?

Running this strace -ff -tt perl -e 'open(A,"<","/proc/cpuinfo");' gives this: 22:36:10.365187 openat(AT_FDCWD, "/proc/cpuinfo", O_RDONLY) = 3 22:36:10.382061 ioctl(3, TCGETS, 0x7fffb127ea50) = -...
0
votes
0answers
9 views

Load grub from clover not working

I am trying to load grub from Clover (legacy on BIOS). I eventually want to boot a with clonezilla copied ubuntu18.04 on disk disk5s4 /dev/disk5 (internal, physical): #: TYPE ...
0
votes
0answers
24 views

Unstable wifi/Connection drops with Qualcomm QCA9377 on Ubuntu 18.04

So I have dualboot on my Acer Aspire with Linux Lite XFCE(Ubuntu) and Windows 10. Network Controller: Qualcomm Atheros QCA9377 802.11ac A while ago I started having issues with Wifi connection ...
0
votes
0answers
8 views

Start Without Debugging is disabled in Monodevelop

I tried to start C#-programming in Ubuntu. I installed MonoDevelop 7.8.2 but when I tried to run the program, the option "Start Without Debugging" is disabled. Is this a bug in MonoDevelop? Is there a ...
0
votes
1answer
26 views

What is the difference between Red Hat Enterprise Linux boot ISO and the same Binary DVD

I am still confused after an hour searching what is the difference and when someone would need just boot ISO or binary DVD ISO Can someone explain in a simple way the difference between them. The ...

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