6
votes
2answers
11k views

How to make tar save the archive on a remote machine using sftp or ftp?

I would like to backup some of my very important data on a remote machine. Currently I'm just saving it to my local machine by using this command: tar -cvjf ~/backups/Backup.tar.bz2 ~/importantfiles/* ...
4
votes
2answers
405 views

what's the difference between machine hardware name and processor type

I know that my machine hardware name is i686 and processor type is i686 due to my Linux output. But I have no idea why they are the same. I want to know what's the difference between machine hardware ...
2
votes
2answers
915 views

setting variables inside subshell when using <<

I am using the following method in order to pass commands into a subshell that is started by "newgrp". #!/bin/csh echo "Before newgrp" /usr/bin/newgrp users <<EONG echo "hello from within ...
1
vote
3answers
710 views

Find matches for the 5th columns in a pipe delim files

File 1: Connect|20130320000023|UTC|PPP|test3@test3.co.uk|test1@test1.co.uk|0BCBE578| File 2: Connect|20130320000023|UTC|PPP|test1@test1.co.uk|test1@test1.co.uk|0BCBE578| ...
4
votes
1answer
1k views

ttyS1/uart1 initialised but not accessible through /dev/ttyS1

I'm not sure at which level I am having a problem. System is a LeopardBoard DM368 running TI's own SDK / LSP / BusyBox kernel, the core Linux kernel is 2.6.x so using serial_core.c driver model. By ...
2
votes
1answer
24k views

How to install the real Thunderbird on Debian wheezy?

I have Crunchbang 64 bit, a debian wheezy distro. Debian have a rebranded Firefox called Iceweasel and a rebranded Thunderbird called Icedove. But I don't want any of them. I was able to install the ...
4
votes
2answers
772 views

Spike in swap utilisation without high swap rate

Every Saturday, for reasons unknown to me, one of my servers experiences a spike in swap utilisation. It's not necessarily a problem as there is plenty of free memory available, but I'd still like to ...
1
vote
3answers
81 views

Can tree be used to list the number of files per level?

As title, I need to look into a particular directory and list the number of files per level. The directory is pretty large, about 10-15 levels deep. For instance, if I have the following: D1 | |-- ...
-1
votes
3answers
436 views

make ls display current date and time

I'm new to Linux and I'd like ls to display current date and time as a side effect every time I use ls. How do I go about changing what a command does?
0
votes
3answers
208 views

Search in iptables.log file takes a long time

I have used iptables to save information about connections by modifying the /etc/syslog.conf file to save information in /var/log/iptables.log. So, every X hours, I need to extract information from ...
4
votes
1answer
211 views

How can I stop an amok running process from logging to systemd?

There's a process on my system called demond which logs around 100 entries to the systemd journal every 15 seconds: Okt 11 04:58:42 scarecrow demond[1692]: [P:1692 T:108160832] src/discovery.c : 158 ...
1
vote
1answer
2k views

Not able to deny selected local user to login ftp server

I added the below 2 lines in the end of the configuration file /etc/vsftpd.conf so as to deny a local user named 'tentenths' from loggin in the ftp server. I restarted the vsftpd service after the ...
3
votes
2answers
433 views

Permissions to print directly to USB printer

I've a netbook with Linux. I've a usb/serial printer and I added the line chmod 666 /dev/tty* to rc.local and it prints straight after a reboot. When I close the lid of a netbook for a while and then ...
3
votes
0answers
705 views

How to use rsync to backup large files by either appending or replacing

I am using rsync to backup some large files regularly: rsync --archive --update --append-verify [source] [destination] Most of the times, the files increase in size (like a log file), but sometimes ...
2
votes
3answers
8k views

How to make a script run at boot time in Debian Wheezy?

I am writing a script to do some tasks at boot up time in my Debian Wheezy AWS EC2 AMI. Sources on the internet say that usual way to do this is to use update-rc.d to install the symlinks needed to ...
2
votes
2answers
13k views

What is the meaning of $* in a shell script? [duplicate]

In a shell script file i saw "$*", what does it mean and when we have to use it?
1
vote
1answer
246 views

How to find out which virtualisation technology is used on Linux VPS server? [duplicate]

I have access to some Debian Linux vps servers, however I cannot access their controls panel directly: only server administrator himself can do that. Is there any way to find out what visualization ...
2
votes
2answers
245 views

Zsh possibly adding quotes to variable value (works in bash though)

I'm fairly new to zsh (shifted yesterday from bash) I had a bash function in bash like vl() { cmd=`echo $1 | sed -r 's/(.+):([0-9]+).+/\1 +\2/g'`; vim $cmd } This basically converts a argument ...
4
votes
1answer
2k views

How to trick an init script into returning 0

I have a init script which is poorly designed because it does not conform to the Linux Standard Base Specifications The following should have an exit code of 0 if running, and 3 if not running ...
4
votes
2answers
487 views

How do I execute a command on login for a system user with no home folder and no personal .bashrc file?

I set these users' home folders through the /etc/passwd file, but when they log in I would like them to activate a python virtualenv. If they had a personal .bashrc file, I'd just include the activate ...
4
votes
4answers
15k views

How exactly do I create a sed script and use it to edit a file? [duplicate]

I know how to edit a file using sed one step at a time, but how would I create an actual sed script and then use it on the file to do the same things that the individual sed commands would do? For ...
4
votes
1answer
434 views

Execution time and resources after processes that has been running for so long

This might be a basic question, but I am getting hard time finding an answer to it. I am using RHEL6. After running any process that takes significant cpu time, I get a line that tells (I guess) the ...
4
votes
0answers
4k views

How do I force ssh to use a second interface with higher metric?

I have a Crunchbang VM with two interfaces, eth0 and eth1, each of which connects to an OpenWRT VM (eth0 being 10.232.64.20 and eth1 being 10.232.65.20). I'm using Network Manager and DHCP. My ...
1
vote
2answers
379 views

How would I use sed to detect a certain amount of numbers before it inserts a character? ###-###-####

I need to format phone numbers in a text file. They appear as (example) 8014516912 How would I format it so that I can insert a - after the first 3 numbers, and then another - after another 3 ...
2
votes
1answer
3k views

How would I use sed to insert a character at a certain character position on only ONE line?

I am aware that this will do what I want on all lines: sed 's/^\(.\{4\}\)/\1-/' textFile But how would I enter a - after the 4th character slot on ONLY the 5th line? Or even better, on a range of ...
2
votes
6answers
5k views

Why can't I upgrade Linux Mint 15 from Cinnamon 1.8.8 to Cinnamon 2.0, and how do I fix it?

So Cinnamon 2.0 is out, and I've followed the steps people have given for upgrading. sudo add-apt-repository ppa:gwendal-lebihan-dev/cinnamon-stable sudo apt-get update sudo apt-get dist-upgrade ...
4
votes
2answers
2k views

Arch: Awesome Window Manager won't start [closed]

I can't get my awesome running. I installed awesome and all dependecies with pacman and followed the beginning of the following guide to get awesome running: ...
3
votes
1answer
92 views

Why does a manual mount set different file ownership?

I've been using the terminal for almost everything: in fact, I often don't even log in through the interface, I use the tty1 and go to the web with text-browsers. So, the external drive doesn't ...
3
votes
4answers
15k views

permissions 755 on /home/<user>/

I am wondering why by default my directory /home/<user>/ has permissions set to 755. This allows other users to enter into directories and read files in my home. Is there any legitimate reason ...
4
votes
1answer
270 views

Use case of providing file-like API to terminal/console

It was explained in this Stack Overflow thread that each logical terminal has a "pseudo-terminal", and that writing to one: $ cat some-file.txt > /dev/ttys002 will cause the data to appear in ...
3
votes
1answer
670 views

Mount NTFS drive with 777 permissions

I need to mount a NTFS drive with permissions set to 777. The code i have in fstab now is: /dev/sdb2 /disk ntfs defaults,nls=utf8,umask=000,uid=1000,windows_names 0 0 But ...
4
votes
4answers
769 views

Search mp3 collection for songs with a certain song length

How would I search a directory of mp3 files for songs between a certain length. Ex: findmp3 -min=03:00 -max=03:15 /music/mp3/ebm/ Would return all mp3 files in the emb/ directory having a song ...
5
votes
3answers
668 views

Is there a way to really prioritize processes or make Linux respect their priorities?

I know there are process priorities like in other operating systems, going from -20 (most prio) to 19 (less prio) but Linux seems to ignore them. Right now I was building the kernel in the background ...
1
vote
2answers
31k views

How to check whether certain port is opened or block on any other servers from a dev box?

I am trying to connect to one of our staging Cassandra servers on port 9042 and 9160 here in our company from a dev box.. Through the code, I am not able to connect to it... The program gets hanged at ...
2
votes
2answers
828 views

Script to delete text files

I was trying to make a script that searches for all ASCII text files in the directory that you point out and after that writes the path of every file to a text file. After that it's supposed to show ...
8
votes
2answers
11k views

How can I get my sed command to make permanent changes to a file?

Is this possible? I read somewhere that the following command would do it: sed -e [command] [file] but it appeared to do the same thing as just sed [command] [file] (it did not save the ...
1
vote
2answers
90 views

How is replaceable text shown in a terminal? [duplicate]

For example after doing apt-get update, it shows Reading package lists... 82% with the percentage changing in the same line. How is that achieved? Is it possible to use it in a bash script?
7
votes
1answer
5k views

Read what is written to /dev/tty*

How can I read what is written to /dev/tty*(* = 0 - number of tty)? I tried sudo tail -f /dev/tty1 on one terminal(X) and then sudo cp .emacs /dev/tty1 from another. X didn't show the the content of ...
3
votes
1answer
915 views

output of top gets truncated to 80 columns when run by cron

I have got the following logging script: #!/bin/bash top -b -c -n 1 >> /var/log/toplog/top.log And the following record in my crontab: */1 * * * * /home/clime/scripts/toplog.sh The ...
3
votes
1answer
1k views

User space to kernel space transition

Both physically (hardware, rings) and logically (software), what is user space to kernel space transition? And vice versa. Or more generally what goes on when there is a "space" (or ring) transition ...
1
vote
3answers
442 views

Linux VPS host with graphical interface using RDP (not VNC)

Our CEO's latest brain-waive is "More people will use our software product if it were all accessible from the web". He wants to dump a lot of (but not enough) resources in to taking a complex ...
1
vote
1answer
198 views

How to pass wildcards in command line [closed]

So this works: foo -a -b -c "path/file.ext" And this too if I want to pass all files from directory: foo -a -b -c path/* But if I add the quotes foo -a -b -c "path/*" It doesn't work anymore: ...
2
votes
1answer
494 views

Is it possible to import vmail folder from old iRedMail to new iRedMail installation?

Basically, what I did: Copied vmail folder to my local machine. Reinstalled my VPS. Installed iRedMail again. Created same users on the same domain. Question is - can I somehow copy over my old ...
2
votes
2answers
525 views

Hard drive partition and updating trouble

I'm new to linux and am using Linux Mint 15 Olivia. I am running it alongside windows 7 and I want to increase the size of my current linux hard drive partition. I read somewhere that I should install ...
1
vote
1answer
438 views

How to use redobackup without free partition

I had a spare 250GB drive a while ago from an old Windows Vista computer. There wasn't much data on the drive. I wanted to use it for a new OS in my computer, and I was in a rush to use it, so I ...
2
votes
2answers
255 views

Feeding /dev/random with disk reads etc

Is there any way to feed /dev/random with sufficient entropy? The data doesn't have to be truly random, i.e. I can append time of day with pid and add 27 to it, it doesn't matter I just want to make ...
6
votes
1answer
6k views

dbus-launch terminated abnormally with the following error: No protocol specified

After a recent upgrade in my Arch Linux x64 system, I keep getting this warning message after installing or removing packages with pacman. (gconftool-2:5207): GConf-WARNING **: Client failed to ...
2
votes
3answers
1k views

What happens if I delete all user passwords?

I have a Fedora VPS with a root user that has no password. I login with SSH keys. I had another, less privileged account on that server, used for web administration. I've now deleted its password ...
1
vote
1answer
829 views

Linux Mint Olivia doesn't detect HD4000 Intel graphic

I opened Mint after a week or so & soon welcomed by a notification saying something like 'CPU high usage will be experienced due to no Graphic module' i opened my system summary & instead of ...
2
votes
1answer
258 views

Share an external IP with several virtual hosts

For a centos server hosting a few LAMP virtual machines (using VirtualBox), I have a single external IP. I would like to be able to use this single host external IP to address the virtual machines. ...

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