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.

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1
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2answers
959 views

Logrotate: Log file not being rotated

I am trying to rotate a log file using logrorate. Following is the configuration: /etc/logrotate.conf: /var/log/test.log { size 1M rotate 6 create dateext ...
-4
votes
1answer
130 views

Would my programs run on freeBSD?

I tested freeBSD in a virtual machine on my Linux pc, and I kinda like it. I noticed that the file structure is similar to that of Linux, and many Linux commands will also work on freeBSD. My question ...
1
vote
1answer
808 views

Save and restore terminal tabs with custom tabs title

I have a Terminal window with a dozen named tabs open *(gnome-terminal) I would like to save the current configuration and have it restored with names and directories. Is there a way to do this? I've ...
0
votes
4answers
1k views

How do I print a certain line of python code using the Linux terminal?

If I am writing some python and I only want the terminal to show a certain line, what command do I use? For example my program is: print("line one") print("line two") print("line three") And I only ...
5
votes
1answer
7k views

“Found duplicate PV”

SERVER:~ # pvs Found duplicate PV Wb0b2UTCKtpUtSki0k2NnIB24qNj4CEP: using /dev/mapper/36005076304ffc2500000000000004903 not /dev/mapper/36005076304ffc2990000000000004903 PV ...
0
votes
2answers
166 views

Untar and gzip from multiple sub directories

I have a directory which consists of multiple sub-directories. Each subdirectory has a tar.gz file which on untar gives two files namely R1.fastq and R2.fastq. I want to untar the tar file and ...
2
votes
0answers
27 views

BRMS Giving error when importing repo.xml on other node

BRMS Version 5.3 Jboss 6.0 RHEL 6.4 I have installed BRMS 5.3 On RHEL 6.4 & was able to import the default repository successfully for the first time, but I am unable to import UAT repository ...
0
votes
0answers
484 views

errors while installing python-pip on ubuntu

When running sudo apt-get install python-pip I got the following error messages, what causes the problem and how to fix it? Thank you very much for any help. Err http://us.archive.ubuntu.com/...
0
votes
1answer
49 views

How can I generate two Grub2 entries for each kernel?

Due to bugs in my laptop's BIOS (or some such thing), I use the boot flag nox2apic when I know I need to attach an external monitor. However, when this flag is enabled, pressing some multimedia ...
1
vote
0answers
73 views

why cisco VPNC work on the second time each time and not on the first time

I use the vpnc ( cisco VPN that installed on linux red-hat 6.X ) and the vpnc.conf file look like this more /etc/vpnc.conf ## generated by pcf2vpnc IPSec ID Comvwde IPSec gateway 217.118.6.7 ...
1
vote
3answers
11k views

I don't see .bashrc file in my /home and /etc/skel direcories

I am running linux mint 17.1 rebecca, but I have found it quite different with other distros I am used to, in /home and /etc/skel there's no .bashrc I don't know if i mess up with something or it is ...
-2
votes
1answer
185 views

How can I run a script as sudo and for it to not ask me for a password?

I want to run the following script: #!/bin/bash if grep -qs 'MinecraftServer' /media/kiancross/MinecraftServer/MinecraftServer; then echo "Disk already mounted, server boot will continue" else ...
3
votes
1answer
81 views

Debugging info in linux kernel - how does it work?

I have found that I can compile linux kernel with some flags adding debugging support like CONFIG_DEBUG_INFO. These options while useful in debugging are also required by some utilities like SystemTap....
1
vote
1answer
141 views

ZFS on Linux volume low freespace. Usedbydataset is larger than volsize

I have a storage with ZFS and Debian wheezy. I am always using the latest ZFS from their github. I created 3 different raidz-3 pools. One for every controller. On every controller I have 24x 4T SATA ...
1
vote
1answer
48 views

How to upload to a unix server?

Im a part of a project group, and one of our tasks is to upload some content to a server. I am completely new to this and have some questions. There are content on different servers(distributed on ...
2
votes
2answers
116 views

linux setuid does not work

I am learning linux suid,so I have written a small c program with the following content to test it #include<stdio.h> int main(){ system("echo 100 >> test.txt"); return 0; } -rwsr-xr-x 1 ...
3
votes
1answer
1k views

Gnome, nautilus copy files to USB stops at 100% or near

I had similar issues before but i don't remember how i solved it. When i try to copy something to USB stick, with FAT, it stops near the end, sometimes at 100%. And of course, when i transfer the ...
0
votes
0answers
14 views

0 Active connection while Downloading Blockchain?

I am not able to connect to download blockchain in logoscoin. It shows O active connection, I am also attach debug logs below: 2015-01-24 06:18:15 Logos version v0.8.6.4-ga5aedeb-beta (2015-01-22 22:...
2
votes
0answers
87 views

NTP authentication failing with opcode 108

I'm trying to get NTP authentication working on a cluster of test servers and a couple clients. I've followed the instructions at ntp.org. To be honest, though, I'm not sure they are entirely clear ...
5
votes
3answers
753 views

sed “e” and “g” flags not working together

Given this: echo AAA | sed -r 's/A/echo B/ge' I get this: Becho Becho B I would have thought I would get "BBB". This is with GNU sed version 4.2.1. What is going on, and how can I use the ...
5
votes
2answers
354 views

Why is Linux “Unix-like” if its kernel is monolithic?

As I understand it, part of the Unix identity is that it has a microkernel delegating work to highly modular file processes. So why is Linux still considered "Unix-Like" if it strays from this ...
1
vote
1answer
440 views

change linux text console scrolling speed - without rebooting

Is there any way to change to the text console scrolling speed without rebooting? Currently using Fedora, but non-distribution-specific answers appreciated. https://www.kernel.org/doc/Documentation/...
0
votes
2answers
106 views

Linux File System for an External HDD

I'm looking for a file system for an external HDD which will be basically used for backups. It will only be used with Linux machines, so I don't mind having a Linux-specific file system. I may ...
2
votes
4answers
955 views

Download directory from sftp

I want to download directory from sftp to a server.I am able to login to sftp using sftp rob2056@storagename and then can get individual files using : get *.txt /remotedir But I want to ...
4
votes
2answers
557 views

How to get UUID of filesystem given a path?

I am handed a path of a directory or a file. Which utility/shell script will reliably give me the UUID of the file system on which is this directory/file located? By UUID of file system I mean the ...
1
vote
0answers
72 views

Linux: how to run a program with rw access to only a folder

How can I execute a program in a way that all the system is RO and only some folders are RW? Eg: steam (:P) roexec --rw ~/.steam steam Is there any tool that allows me to do this? I've tried mount ...
4
votes
2answers
2k views

How to remove “lock” from deleted, but still used files on Linux?

SERVER:~ # df -mP /home/ Filesystem 1048576-blocks Used Available Capacity Mounted on /dev/mapper/rootvg-home_lv 496 491 0 100% /home SERVER:~ # SERVER:/home # ...
3
votes
1answer
480 views

Strange ip command output

When I call ip addr show I get output with all interfaces and their IP addresses (look at eth7): 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN link/loopback 00:00:00:...
7
votes
1answer
779 views

When running 'su - username', pam_group doesn't add additional groups from /etc/security/group.conf but sshd login does?

I am having trouble determining why su doesn't behave as the PAM configuration would imply. In short, using su to become another user should load secondary groups according to PAM configuration, but ...
0
votes
0answers
46 views

is there a way for solaris system to get every single piece of info of disks?

the project currently i am working on require me that fetch all info installed in the system, like total capacity, form factor, ssd or hdd, rotational speed, interface type, etc. i searched a lot and ...
0
votes
1answer
39 views

What option specified the location of the generated RPM?

I have noticed that, when building rpm files, that most end up in /usr/src/redhat/RPMS/i386 (building 32bit). Some though, incl one we roll in-house, writes the rpm files to ./i386.... so the file ...
1
vote
1answer
45 views

Can the BS option cause data inconsistency with dd?

I have a laptop partition (truecrypt) backed up with dd since it's impossible to back it up with anything else but do a raw bit by bit copy like: dd if=/dev/sda of=imagefile.img I can of course ...
1
vote
0answers
215 views

Pacman Package manager in LFS

I'm trying to install a Linux From Scratch system. I know LFS doesn't come with a package manager. I want to use pacman as my package manager. I googled bout it and found some links bt they are old, ...
1
vote
0answers
51 views

How to make sure to get the Main/External IP without regard to network device type/name

Hello, I need to make sure I have the external or at least the main IP address for a given machine, regardless to the device type/name. I quickly wrote that tiny script for that purpose, but I need to ...
5
votes
2answers
427 views

ls -l /proc/self | increamental PID?

Each time, when the commandls -l /proc/self is executed, the link points to process who's PID keeps increasing. Why is this so ? Is it the PID of the ls command ?
7
votes
1answer
3k views

How can I monitor per process/per thread memory consumption (divided into heap, stack, data, code)?

Before jumping in and writing my own code, I want to find out if there is GNU/Linux software that is able to output something similar to QNX's showmem. For each thread of each process that is running,...
4
votes
2answers
131 views

Can I remap SHIFT+CAPS LOCK in Linux console?

I recently acquired an old netbook which has no backslash/pipe key. I have successfully remapped the caps lock to backslash using loadkeys. I would like to map SHIFT+CAPS LOCK to the pipe key in a ...
1
vote
1answer
490 views

How to disable procps-ng 3.3.10 free wide output format?

I'm writing a script that is supposed to simply tell me the amount of free physical memory excluding caches and I noticed that my Fedora system shows a different output format than a CentOS system I ...
2
votes
0answers
271 views

Supervisord scheduling

Is it possible to set jobs to run every n days in supervisord, like what cron is doing? I'm asking because I have different kinds of jobs, continuous / real-time and daily ones. All my jobs are ...
0
votes
0answers
118 views

assertion Failed error while running Bitcoin-Qt application?

I have downloaded Bitcoin-qt project from GitHub for Ubuntu 14.04, But I don't know why I'm getting error: Error: /main.cpp:2985: bool InitBlockIndex(): Assertion `block.hashMerkleRoot == uint256("...
2
votes
1answer
300 views

State of network loopback

Why the state of lo interface is reported as unknown with cat /sys/class/net/lo/operstate even though ifconfig says it's running?
1
vote
0answers
194 views

iptables / VLAN: interface names

I have just started working with VLANs. My memory was VLAN interface names are the interface name plus dot plus the VLAN ID. And that is what vconfig offers. After some (successful) manual tests I ...
0
votes
1answer
2k views

iptables configuration for Transparent squid proxy

I have to setup a transparent squid proxy server using iptables and squid. Following is the scenario: [INTERNAL NETWORK] -> [Main Switch] -> [Proxy Server] -> [Firewall] -> [EXTERNAL ...
1
vote
0answers
40 views

basic help with safecopy

I have a drive with "Many Bad Sectors". After much deliberation I've chosen to try recovering with safecopy (the choices of tools are overwhelming, and they are all just as cryptic to me - but I ...
2
votes
0answers
329 views

Why is systemd-nspawn not appropriate for production deployments?

While reading about systemd-nspawn, it is mentioned that it should not be used in a production environment. The reason seems to be the lack of management and deployment infrastructure. Is practicality ...
0
votes
3answers
53 views

How do I loop through a file with awk

I am using this command sed -e '/^*/d' $WORKFILE | awk -f test.awk >> $OUTPUTFILE in a ksh script to take a file of 274567 lines like this * * * * * syopsf00 a0000096 ...
1
vote
1answer
188 views

Every time I run tmux, new ssh-agent child process is started (zshell)

Every time I start tmux or split tmux, new instance of ssh-agent is started ("Agent pid XXXX" appears on the top), which is quite annoying because I have to type the key password every time I want to ...
1
vote
1answer
564 views

Duplicate UUID's for Physical Volumes But PV's aren't in a Volume Group

I have some dead/stale/non existent logical volumes without group pvs said File descriptor 3 (pipe:[306492]) leaked on pvs invocation. Parent PID 30844: -su Found duplicate PV ...
2
votes
2answers
2k views

How do I use yes with e2fsck?

I have tried the following with both LinuxMint 13 Cinnamon 32 bit and Trisquel 7.0 Gnome 32 bit and get the same error message: $ yes | sudo e2fsck /dev/sdax e2fsck 1.42 (29-Nov-2011) e2fsck: need ...
0
votes
3answers
378 views

Count new lines in file last 1 minute

With bash, how to count new lines appended to file the last 1 minute? What would be smartest if you want to count new lines for the last 1 minute in multiple files simultanously and get output? I ...