2
votes
5answers
509 views

how can I print the Nth and the Mth line above or below the matching line with grep?

Let's say I have a well-structured text file with following content(no leading line numbers): 1 Mon Jun 9 00:11:47 CST 2014 2 eth0 Link encap:Ethernet HWaddr D4:BE:D9:F5:5C:0E 3 ...
3
votes
4answers
865 views

How to divide the output of one command by the output of another?

I would like to know the server load divided by the amount of CPU cores in order to judge which servers are overloaded. I can get the amount of CPU cores with: $ grep -c processor /proc/cpuinfo 2 I ...
1
vote
1answer
466 views

Where can I get the “kernel-default-debuginfo” package for SLES 11?

I'm using SLES 11 SP2 x86_64 and I want to install kernel-default-debuginfo package. But, I couldn't find it anywhere on the Novel website. Where can I find the mentioned package?
3
votes
2answers
725 views

Error when calling mv with wildcards

#! /bin/bash error_text=$(tail -n +1 /path/dir/folder/exc/a/update/Abd/ER/* | \ grep 'Warning\|Loaded\|Event') echo $error_text nc 10.10.99.45 25 << EOF ehlo mail.abc.pvt mail from: robot@...
-1
votes
1answer
24 views

Trying To Get Data From Server HDD

I had two CentOS 6.5 servers that I was running using the Plesk control panel. I have moved and decided not to use them no more but just buy my hosting. My new ISP blocks port 80 and the cost is ...
3
votes
0answers
377 views

Difference between “curl -XPUT --data-binary @${file_path}” and “curl -XPUT -T ${file_path}”?

While using curl to POST or PUT a file to a url, there are two different ways to load the file content: -T ${file_path} --data-binary @${file_path} or -d $@{file_path} (for ascii data files) What ...
3
votes
4answers
3k views

How can I change all of the contents inside of directory to what the default file ownership and permissions are?

I have moved contents of another drive into my home directory, but the permissions are not what they should be. First, I changed ownership by entering: ~$ sudo chown -R USERME /home/USERHOME/ ...
6
votes
3answers
29k views

How to replace the content of a specific column with awk?

Given: there are 40 columns in a record. I want to replace the 35th column so that the 35th column will be replaced with the content of the 35th column and a "$" symbol. What came to mind is something ...
1
vote
1answer
739 views

Is there a web browser for Linux that implements the Trident engine (Internet Explorer)?

Internet Explorer uses the Trident engine for rendering. I have an app that was made for IE only. It is a big application I inherited, and it is JavaScript heavy. It's and older app, and it will ...
1
vote
2answers
127 views

Copying latest files from the remote servers

We run report on multiple remote servers which we pick up monthly on our central server. The whole process is automated with scp and working well. The issue is that sometimes we go on individual ...
2
votes
0answers
273 views

Setting up traffic for GRE Tunnel

I want to set up clients that are behind NAT with a public IP but allow them to have one or more public IP's on their device. The idea is to have a linux box with either 1 or two network cards. Lets ...
2
votes
4answers
961 views

Overwriting a Disk

Should I use: find / -type f -exec shred -uvz -nX or just good old dd if=/dev/urandom of=/dev/sda Is one faster or more secure than the other?
5
votes
2answers
801 views

Lenovo Thinkpad T440s Fedora 20 WiFi authentication problem

In some WiFi networks, consistently in hotels so far, my computer cannot connect and prompts that authentication failed, when the password is correct. This is a very annoying problem that I don't know ...
37
votes
2answers
11k views

Will Linux start killing my processes without asking me if memory gets short?

I was running a shell script with commands to run several memory-intensive programs (2-5 GB) back-to-back. When I went back to check on the progress of my script I was surprised to discover that some ...
1
vote
1answer
2k views

Wget or curl a self-signed certificate from server

From my browser, I can browse to a machine in my companies local intranet and (after marking the certificate as trusted) export that certificate to a file. I'm trying to automate this process into a ...
0
votes
1answer
926 views

Executing backup script on external HDD plug using udev

I have tried to write a custom udev rule to run a backup.sh script when I plug my USB 3.0 external hard disk to my home server. I created a new file in /etc/udev/rules.d called 10-custom.rules. In ...
3
votes
2answers
969 views

Checking the status of custom services with a script

I have a handful of shell scripts that start WebLogic managed servers. I need to design a master script that does the following: Executes the shell script for a component\managed server Checks to ...
1
vote
0answers
201 views

Customize Logitech M600 mouse in Fedora 20?

I just got a fancy Logitech M600 touch mouse, and there are very specific things I want it to do on my Fedora 20 64-bit KDE spin. Unfortunately, there don't seem to be any config files where I can ...
1
vote
1answer
203 views

How do I allow non-root access to Nexus 7 2013 LTE (deb) over adb and fastboot?

I need to access my Nexus 7 2013 LTE (deb) over adb and fastboot, but it seems that it's required to be root to be able to run the adb server to be able to access the device due to USB rules. How can ...
0
votes
1answer
5k views

SQLPLUS withing shell script loops

Hello I am trying to run a loop and get the details of a project. I have these projects in my work space. How do I loop over the SQL code? #!/bin/bash workspace=$(sudo locate -r '/workspace$') ...
1
vote
1answer
863 views

What are the advantages / disadvantages Linux file hierarchy has compared to other OSs? [duplicate]

Does it make any difference whether a file system hierarchy sorts files by types and put them all under one directory (like all the binaries are under bin) or, on the other hand sorts them by package ...
1
vote
0answers
567 views

Error while building Linux module of a wireless driver

I have recently installed Debian Wheezy onto one of my old computers to test it out and to become more familiar with Unix. To my surprise I enjoy the interface very much so far, but I have run into a ...
3
votes
5answers
212 views

Get values block by block in same file

I have a file say "SAMPLE.txt" with following content, P1 10,9:6/123456 P2 blah blah P1 10,9:5/98765 P2 blah blah P1 blah blah P2 I want a output file say "RESULT.txt" as, Value1:123456 Value2:...
1
vote
0answers
263 views

Problem in writing message from one terminal to another terminal

I have a user of name x in tty1 and y in tty2. x wants to write some message to y and vice-versa. When I typed write y tty2 in the tty1 terminal, it said: write:you have write permission turned off ...
3
votes
1answer
237 views

Issue with network switching

I have a desktop PC running debian that has two network cards installed. One network card is connected to a secure company network and requires a static IP. The other network card (eth1) is connected ...
2
votes
1answer
284 views

Filesystem types for encrypted partitions

I wish to encrypt two external hard drives using dm-crypt/LUKS for whole-disk encryption. I want one hard drive to have an ext4 filesystem for Linux use only, and the other to have an NTFS filesystem, ...
2
votes
2answers
225 views

How do I remove the new environment commands that were created by the virtualenvwrapper script?

I've installed and run virtuarenvwrapper.sh to try to configure an alternate version of python on my system. This script has placed somewhere a series of commands that are now executed whenever I ...
2
votes
1answer
1k views

How to scp from remote host to remote host with pem files and turning off strict host checking?

From my DEV server I'd like to copy files from my stage server to my prod server. I already have SSH keys setup between my DEV server and my stage server. But I haven't had any success trying to ...
1
vote
0answers
217 views

php5-curl installation aborts due to ucf failing on /etc/php5/mods-available/curl.ini

I've screwed my raspbian (debian) installation. To fix this I'm going through reinstalling every single packacke. This is tiresome (or rather: slow) but works in general. Where I'm absolutely stuck ...
2
votes
0answers
588 views

Server won't boot, kernel panic - not syncing

After a reboot of a CentOS 6.2 server we are getting a kernel panic with the following error: Kernel panic - not syncing: Attempted to kill init! Panic occurred, switching back to text console ...
3
votes
1answer
1k views

Copy/paste does not always work from Firefox to terminal

Using st with dwm, depending on the way I select text (e.g. mouse vs keyboard), and where the text is (e.g. document body vs address bar), copying text from firefox and pasting it into st does not ...
1
vote
0answers
32 views

-exec isn't being passed all the files found by find [duplicate]

There are two files called install.log and install.sh The find command will find both of these and pass them to -exec ls With the addition of an or (-o), it only passes one argument to -exec ls ...
0
votes
1answer
554 views

Troubles with .desktop file

I've successfully installed Internet Explorer 7 with winetrick in a clean prefix. I can successfully run it from terminal like this: env WINEPREFIX=~/.wine32ie7 wine 'C:\\Program Files\\Internet ...
8
votes
1answer
1k views

Does ionice work with the deadline scheduler?

My Debian Wheezy systems use the deadline scheduler. I'm accustomed to using ionice to reschedule the I/O priority of disk-intensive jobs at busy times, and anecdotally this seems to help (but I don'...
0
votes
0answers
44 views

'Refresh-save' a file, dock problem?

A bit of context: I followed the bug reports on Docky (link1, link2, and all the other links in these links...) and managed to make Plank recognize IntelliJ IDEA using the right StartupWMClass on the ....
5
votes
3answers
6k views

GREP / SED or AWK: Print entire paragraph in a file on pattern match [duplicate]

I have a file with hundreds of paragraphs of around 15 lines each. I need to search for a pattern, say Occurance: 1. If this pattern is found in the para, I need to print the entire paragraph. Note ...
2
votes
2answers
3k views

Guest Windows XP screen has wrong aspect ratio

I'm running Linux Mint Qiana as the host on a new HP 250 G laptop with 4GB of Ram and a 500GB hard drive. The laptop has a screen aspect ratio of 16:9. This is new to me because it's my first laptop ...
1
vote
3answers
622 views

GCC: set architecture to pass to linker

GNU C compiler passes the wrong architecture name to the linker. For example gcc helloworld.i throws the error ld: unknown/unsupported architecture name: -arch arm. After some experimenting with LD, ...
8
votes
1answer
7k views

Routing public ipv6 traffic through openvpn tunnel

What I'm trying to do is to route IPv6 traffic through a vpn tunnel. That way, I should be able to use IPv6 in a network that doesn't support IPv6. I have a VPS which has an IPv6 block assigned. Part ...
2
votes
1answer
303 views

Process specific ulimit still low after changes to soft and hard ulimits

I'm having trouble with increasing the open-files ulimit (ulimit -n) for a particular process on a Debian 6 server. AFAIK I've done everything to change the servers hard and soft limits in this case, ...
8
votes
2answers
5k views

readarray (or pipe) issue

I stuck with an strange behaviour of readarray command. The man bash states: readarray Read lines from the standard input into the indexed array variable array but these scripts don't work (...
2
votes
1answer
5k views

How to upgrade OpenSSL to 1.0.1h

I'm currently running Ubuntu 13.10 and my OpenSSL version is 1.0.1e. As per latest security warning, I'd like to upgrade it to 1.0.1h. I've tried apt-get upgrade openssl (don't want to upgrade ...
0
votes
3answers
188 views

find * looks for a file named “*” on Debian but not on RHEL

Where is the difference? Do these distributions handle something differently? Or does the configuration vary? What do I have to compare and adjust? I would prefer find * not to match the wildcard ...
0
votes
1answer
343 views

Search a string between two timestamps starting from bottom of file

I was trying to find a string Cannot proceed: the cube has no data in huge test.txt file only between timestamps yesterday 22:30 pm to today 00:30 am. Script: tac test.txt | awk -v today=$(date "+%d"...
0
votes
0answers
289 views

How to correctly set up fonts?

I installed Arch Linux few weeks ago, but I've been using it before for about a year. I set up mostly everything, but I have problems with fonts. First problem appears in Firefox's pdf viewer. ...
5
votes
2answers
33k views

IPTables rule to allow incoming SSH connections

The aim of this script is to only allow traffic over the VPN, except for localhost<->localhost and incoming SSH traffic. But when I run the script over SSH I am disconnected and forced to restart ...
0
votes
1answer
376 views

setfacl remove all write access

I want to remove all write access to files & directories for any user or group while preserving other permissions. Is this possible?
3
votes
3answers
2k views

How to know if /dev/hda2 is Primary partition or Extended partition

If all four primary partitions exist on an IDE drive, they are numbered as follows: /dev/hda1 /dev/hda2 /dev/hda3 /dev/hda4 We have also the partitions on a disk with one primary partition and ...
0
votes
1answer
238 views

Scripting error after bc command

I am trying to execute a script as shown below: #!/bin/bash USED=`free -m | more | grep -v total | head -1 | cut -d':' -f2 | cut -d' ' -f18` CACHE=`free -m | more | grep -v Swap | tail -1 | cut -d':' ...
0
votes
2answers
446 views

RHEV cannot start inside Oracle VirtualBox

While installing RHEV Hypervisor 3.3 on Oracle VirtualBox I am getting following message: Failed to open a session for the virtual machine RhevH1 VT-x is used by another hypervisor. (...

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