6
votes
2answers
3k views

how to ssh -Y and then su - <another user> and still forward X applications to your local machine

it is easy enough to 'fetch' (ie draw locally) a remotely running linux application: If I ssh -Y to the remote machine and run an application, that application will surely enough pop up in my local ...
1
vote
2answers
265 views

Make the occurrences of a string bold

Now, this is a homework question, but I have simply no idea how to go about solving it. It'll be great if someone could guide me about how to go about it. I've been given a large string of Upper ...
1
vote
2answers
185 views

How can I merge multiple lines with spaces (blank line) separating them? [closed]

I'd like to merge the following multiple lines of output so that they form a single line: line 1: ...
3
votes
2answers
340 views

Why don't I have read access to files with modified ACL?

My aim is to allow read access to folder /var/www/mysite/ only for users in group www-data using a default ACL. This works for a regular ACL, but not for a default ACL. Why? This is how I did it: I ...
2
votes
1answer
1k views

Mounting error while installing VM ware tools in Kali Linux

I'm new to Linux and I have installed Kali Linux on VM Workstation.I want to install the VM tools but when I click "install VMware tools" from the VM workstation menu I receive this error at the guest ...
2
votes
3answers
8k views

How to run awk for some number of lines.?

I want to extract some lines with awk. Is it possible to do the following task: ls -l | awk 'BEGIN FOR(i=122;i<=129;i++) FNR==i' How can I display the details from line numbers 122 to 129?
2
votes
2answers
6k views

For loop for renaming files with prompt for each filename

I have to convert multiple video files in a folder. I have to rename each one of them but I need the script to prompt me to write a custom name for each filename. Here is what I've got so far: First ...
0
votes
1answer
566 views

hiding a php file/folder with php file from ftp user

Is it possible to hide the php files or hide a folder with php files from FTP user accessing? But the files can be executed on a webserver?
2
votes
2answers
3k views

How to sign into an open Wireless Network?

I'm running Arch Linux on my netbook. My school have an open Access Point and we must sign into the network via a page which we are redirected to when we try to open whatever website if we are not ...
0
votes
1answer
645 views

Is this the correct way to create a repo for offline usage ? ( for : yum groupinstall “Desktop” )

Let's create a repo for: yum groupinstall "Desktop" first, i create a folder named "test" /root/Desktop/test next i need to know what is inside of "Desktop" group. yum groupinfo "Desktop" ...
1
vote
1answer
96 views

Best way to find the active wireless device

Of course I know the command: iwconfig which lists devices (and gives info about whether they have a wireless connection). For the purposes of a shell script, I'm really wondering, is there any way ...
5
votes
3answers
351 views

Is troff/groff relevant anymore?

I've heard that troff/groff have largely been replaced by TeX. Is this true? The only thing that I know actually used troff nowadays is manpages. Is this also true? If not, what are some other uses?
9
votes
1answer
8k views

How to execute a script in shell when a shortcut key is pressed

How could I execute a script in Shell when a shortcut key is pressed. Essentially what I need is when a shortcut key is pressed the script should read from a file and display that content in the ...
5
votes
1answer
528 views

In Bash Vi mode, I get thrown into Insert mode automatically after one key press

I am using the bash shell with the XFCE4 terminal. I have configured the shell so that it is in Vi mode. I have done this by adding the following line in my ~/.bashrc file: set -o vi When in a ...
1
vote
1answer
304 views

32-bit on 64-bit: memory usage for multiple processes

I'm working on a Linux hosting solution for game server software, however the software in question is 32-bit and I'd be running 64-bit on the host. Now, I know I can run 32-bit apps on a 64-bit host ...
1
vote
1answer
1k views

Pass a list of directories to a find command

How can I pass a list of directories to a find command? Imagine you got the list as: ls -d mydir*/ which would output mydir1, mydir2 and so on, but exclude otherdirs1, otherdirs2. I'd like to run ...
0
votes
1answer
3k views

Arch Linux Live USB no longer booting UEFI

My Lenovo laptop is running Arch Linux with a UEFI GPT partition table. One day I powered up my laptop, but couldn't get passed the Lenovo boot screen. I used a USB stick to boot up and reinstall ...
1
vote
1answer
97 views

Find and Replace in wordpress postings

I have a wordpress blog with 93 posts on it, in which I want to replace [bash] with <pre> but how do I do it please? I need to go through all the posts changing [bash] to <pre> in each ...
3
votes
1answer
144 views

Perform calculation in hex with Qalculate

I'm trying to do hex calculations, C - A, and I already changed number base to hex, but Qalculate still doesn't work.
2
votes
4answers
6k views

How to change user agent on all http requests made from my machine with Squid intercepting proxy?

I'd like to change the user agent on all HTTP requests made from this machine. It's easy enough to change the user agent in each browser, but other apps also make http requests. It's vital I catch ...
3
votes
2answers
2k views

What stream does perf use?

What stream does the perf command use!? I've been trying to capture it with (perf stat -x, -ecache-misses ./a.out>/dev/null) 2> results following http://stackoverflow.com/q/13232889/50305, ...
5
votes
1answer
893 views

Opening multiple split windows with GNU screen with single bash script

I would like to create a bash script to automatically open a screen window with 4 sessions running predetermined commands. I'd like to open htop and slurm on the top two frames, squidview in the ...
1
vote
1answer
6k views

Nagios uses sendmail, new mail server, need to change SMTP server

I'm working with a CentOS server that has Nagios running and sending notification emails. The emails are still going to the old email system which was kept up to ensure all emails were being routed to ...
1
vote
1answer
107 views

Problem with sed

root@ROUTER:~# cat maccheck.txt logread | egrep ': STA |DHCPACK' | awk '{print $1" "$2" "$3" "$9}' | sed -e 's/\( [0-9] \)/0\1/' | sed "s/.\{15\}/&:/; s/: /:/g" | cut -d : -f 1,2,4,5,6,7,8,9 | ...
2
votes
0answers
406 views

IPTables dropping UDP packet stream

I have a configuration where UDP packets containing encapsulated DNS data are sent to a KVM instance for processing. The KVM instance sits behind an IPtables firewall which is also doing NAT. The ...
5
votes
2answers
7k views

How to get volume level from the command line?

I have a text status bar on a tiling window manager and I am using tcl to feed information to it. At the moment I need a command line that output the volume level 0% to 100%. I am using Arch Linux.
2
votes
3answers
16k views

How to convert from one date format to other format?

I have one problem with my date format. I want to change from one format to the other and vice versa. My date formats are Format 1 YYYY-MM-DD Format 2 MM/DD/YYYY I want to change format 1 to ...
4
votes
6answers
119 views

Only show the lines that are in all textfiles at least once

a.txt cat a.txt a b x c b.txt cat b.txt d e a f the q: SOMEMAGICK *.txt a Q: how can I show only the lines that are in all *.txt files?
2
votes
1answer
1k views

How does “groupinstall” work ? ( How to convert a group-install to a regular multi yum install <package> -y ? )

I would like data on how to replicate the same exact outcome for yum groupinstall "Printing client" without running that command but rather run yum install <package> -y perhaps multiple ...
3
votes
2answers
367 views

Repartitioning harddisk

Saturday I have to repartition my HDD. On my server I have 72GB HDD space which is not very much. Currently my system is partitioned as follows: Partition size: Filesystem Size Used ...
6
votes
3answers
2k views

cp or mv files to same directory they are already in when I am in another?

If I am in ~/blob and I have a file in ~/blob/a_long_directory_name/c/x.x I can type mv blob/a_long_directory_name/c/x.x blob/a_long_directory_name/even_more/y.y Is there any shortcut whereby I ...
2
votes
2answers
197 views

Change PATH in Debian 7.1.0 for JAVA

I would like to change the PATH of my Debian 7.1.0 system to link the java version I want. If I insert into the terminal: java -version I get: java version "1.6.0_27" OpenJDK Runtime Environment ...
3
votes
2answers
4k views

Subversion (svn) doesn't store passwords in gnome-keyring

I fight with svn since 2 hours to store my password inside the gnome keyring, but nothing worked. I'm on a fresh installed archlinux system with the following packages installed: acl 2.2.52-1 ...
2
votes
1answer
947 views

Is many consoles in securetty file a risk?

I got a problem So I expect you can give me an answer. I have to evaluate the security of a RedHat server. The idea is review the /etc/securetty file to ensure that only the console tty is listed. But ...
5
votes
1answer
8k views

How do I add other language in a Debian system?

I want to add another language in Debian. I have done dpkg-reconfigure locales locale -a C C.UTF-8 en_US.utf8 POSIX ru_RU.utf8 but I don't have any result. root@ai:/home/volkov# locale ...
1
vote
1answer
101 views

make “print to file” settings permanent in Iceape [Seamonkey]

Everytime I want to "print to file", say, a website in Iceape [Seamonkey] in Linux [Debian], I have to set all the options for printing anew to overwrite the default settings. Not just every time I ...
14
votes
2answers
4k views

How to tell which keyboard was used to press a key?

I frequently work on pairing stations where there are multiple keyboards installed. I can use setxkbmap with -device <ID> to set the layout for a specific keyboard (using an ID from xinput), but ...
4
votes
1answer
122 views

Help with the sort command (numeric)

I have this output I'd like to sort numerically by port (starting at the 35th column): tcp 0 0 192.168.0.210:110 0.0.0.0:* LISTEN 3385/dovecot tcp 0 0 ...
0
votes
0answers
532 views

swap space allocation vs swaptotal

I created a Red Hat 9 virtual machine on VMware Workstion 9 by allocated the physical memory of 256MB. See pic. When installing Linux, I created the swap partition with a size of 256MB. See ...
1
vote
0answers
250 views

Full network logging via linux firewall ( iptables )?

How truly enable full network logging via iptables? There is an option --log-prefix to add a tag to log entries. But the log entries don't show all complete packets. What a grand way to enable full ...
4
votes
2answers
5k views

ethtool get permanent MAC address returns all 0's

I need to read permanent (burned-in) MAC address of network adapter. Since MAC address can be easily spoofed, I need to read the real one which is written on EEPROM. I need to do it using C++ on ...
12
votes
2answers
911 views

Can I color-calibrate a Dell U2413 wide-gamut monitor under Linux?

If I get a Dell U2413 wide-gamut monitor to use with Fedora for photography, will I be able to use it properly? I've got a ColorHug, and I see that there's a U2410 ccmx profile; will that get me in a ...
3
votes
1answer
417 views

Enumerating\writing files in a specific directory hangs the command

I'm communicating with a machine remotely through ssh. This machine runs a custom-built Linux and it has very limited set of commands. At some point, a specific directory refuses files to be written ...
5
votes
2answers
1k views

Launching an external script with source command

I've been learning shell scripting, by reading good tutorials and reading scripts. I was reading this minecraft init script, and these first lines hit me: if [ -L $0 ] then source `readlink -e ...
3
votes
4answers
976 views

Bash aliases/functions and command line options

I want to set an alias to start nedit together with command line option -noautosave (due to text files up to 500MB). What seemed to be easy: alias nn="nedit -noautosave $1 &" just raises some ...
4
votes
2answers
2k views

swapoff fails when overcommit_memory==2

I've disabled memory overcommitting by setting overcommit_memory=2. Now when I tried to swapoff, I get this error: swapoff: /dev/sda5: swapoff failed: Cannot allocate memory But I in fact have 0 ...
1
vote
3answers
490 views

how to calculate the average value of the column that have the row ID?

I want to calculate the average value of my data when they have the same ID (in my specific case, the same day but different time in a day). This is meant to calculate the daily average value of my ...
1
vote
0answers
4k views

'Git clone' times out with 443 error message

git clone -v https://github.com/me/myproj Cloning into 'myproj'... <minutes pass> error: Failed connect to github.com:443; Operation now in progress while accessing ...
1
vote
3answers
87 views

Extend one alias in second alias [duplicate]

It is possible to do this: alias tm=cd /opt/tomcat alias tmbin=tm/bin $ tmbin $pwd /opt/tomcat/bin ?? I know that I can do: alias tmbin=tm;cd bin
2
votes
1answer
685 views

Public key for git-…rpm is not installed

When attempting to install git (and probably other packages), I get this error: $ sudo yum -y install git Installing: git x86_64 1.7.11.3-1.el6.rfx ...

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