General :: What Command Run To Determine The IP Numbers?
Apr 20, 2011
Firstly I would like to say that Linux is very cool, especially the CLI. I have been trying to learn how to do some things in Fedora after being told Fedora was a good distro to get my feet wet. I have run into some issues and cant seem to find any answers. What Linux utility can be configured to automatically save the current logs?
How does your Fedora get an IP number? What IP numbers has your Fedora been assigned since it was installed (based on the logs you have)? What command did you run to determine the IP numbers? What command would you run to determine the number of times a user successfully used "su"? What command would you run to determine the number of times a user unsuccessfully used "su"? Having some issues with the file system as your Fedora boots up.
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Apr 14, 2011
When you run the following cp command in the BASH terminal, how does Linux know which files are the source and which are the destination when copying multiple files from one location to another?How does Linux know that the services, motd, fstab, and hosts files are the source and the /home/fred/my_dir is the destination?This question came up in a Linux class and I was not sure of the answer. I was thinking it is based on the source path entered ending with a file path and the destination being a directory, but was not sure.
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Feb 27, 2010
I am a newbie in Linux. Here is my question....
Create the file ~/license_counts, which tables the number of occurrences of packages which are licensed under a given license, for the top 5 most commonly used licenses, sorted in numerically descending order. If performed correctly, your file should be formatted similarly to the following. (Do not be concerned if the actual counts or license names are different. Also, you might notice logically similar licenses, such as LGPL/GPL and GPL/LGPL. Do not make any attempt to combine them into a single entry.)
The resulted format:
I tried some method but cannot get it to work.
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Feb 11, 2011
Let's say I have a bash script called log.sh. In this script, I want to read in input from a pipe, but I also want to know the command used to pipe input into me. Example:
tail -f /var/log/httpd/error | log.sh
In the shell script, I want to know the command tail -f /var/log/httpd/error.
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Jun 13, 2010
Is there a linux/unix command that will return where a domain is hosted at? Basically, the command that is used for [URL]?
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Apr 14, 2010
In Linux, I'd like to know how to find the file(s) if any which as using a particular sector on the hard drive (ext2/3). There is a similar question here regarding Windows, however I need a Linux command line solution (this is a headless system).
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Aug 22, 2011
How can I print Linux command line history without including the line numbers? I want to send it all to a text file like this:history >> history.txt
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Jan 1, 2011
The man page seems to indicate no. There is /etc/rc.d/init.d/halt on Fedora. It has a hard coded pause in it, but there's got to be a better way than to change that script.
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Mar 14, 2011
In a moment of madness I decided to reorganise my mp3 player. I am putting everything into one folder (called 'all'), but first I am renaming the files to the following format:
artist ## songtitle
where ## is a number like 01, 02. This has been pretty straightforward with the songs that already started with a number, because then I could just
rename 's/(dd)/artist $1/' *.mp3
but I have a problem with those tracks that don't already have the track-numbers at the beginning. I suppose what I am asking is: can I turn
All Along the Watchtower.mp3
Purple Haze.mp3
Hey Joe.mp3
into
01 All Along the Watchtower.mp3
02 Purple Haze.mp3
03 Hey Joe.mp3
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May 13, 2011
Have this script which is reading in a series of files, one at a time with while-do-done loop, each file goes through various greps/awk's where this info is then saved to various files for later use. i.e....
Script is being run on Linux Red Hat,
In one of the grep/awk's the output (currently) are 2 columns (min max), i.e....| awk '{print $1, $2}' | sort -u which outputs (e.g.)
The number of "min max" pairs varies from file to file. Want to output a single column of unique numbers from the min max pairs & get the number of them for input to a file...i.e...
Where <PROCESS> is some process/technique that will generate a single column of integers (increment of 1) to pipe into the next one (sort -u)
i.e. (example from above)
Have tried command seq - only works for single pair input i.e.
Is there any command like seq etc which will output a single column based on a input of min max numbers (increment 1) to pipe onwards to next command?
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Mar 22, 2010
Is there any elegant (and preferably uniform) way to determine IP address assigned to a DHCP/PPP interface inside a post-up command?
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Apr 5, 2011
I have a headless server set up with no GUI on board.I know there is some way to display the installed hardware , I just can't remember how.What I'm looking for in particular is determine the type and speed of the PCI-e slots.
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Jun 8, 2011
Is there any command which could help me to determine which host name (domain name) an IP is connecting to from the command line?
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May 10, 2015
I cannot find a bash command: "file" !
It say "-bash: file: command not found"
"file" is used to determine file type on a bash right ? is there a package i have to install ? deprecated ?
I use debian wheezy distro
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Jan 8, 2010
When at the console, what is the command (if there is one) to determine memory usage (used/free) on the hard drive that is being used for one's OS?
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Apr 4, 2011
am writing a small search program for my class. I have decided to use indexing for my program. Ive researched online about indexing and how search engines do it. If im gonno do that I need to create inverted files to associate files to numbers ( numbers being the index of my paths ) . Now I was wondering what would be the best way to create an inverted file ? I was going to create sql tables using mysql api in C but then again there is no array data type or vectors to store few numbers in a single column in mysql and it is not advised to use Enum or SET
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Jul 21, 2010
I'm trying to write a small script that will run as root, but launch a command with sudo as another user. I want that user to be whichever user is active user. That is, the user that is using GDM right now, or the one that is logged into the current console. (by current console, I don't mean the user running the script, but rather the user logged into the console currently displayed on the screen.)How can this be done?
Code:
ACTIVE_USER=`somecommand`
test `id -u pulse` -ge 1000 && sudo -u $ACTIVE_USER $*
What can I use for "somecommand"?
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Aug 10, 2010
Can anyone specify the methods how to add decimal numbers in Linux
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Mar 2, 2011
On my board there is no i2c lines out. So I am trying to get i2c over GPIO by GPIO bit-banging. How to use i2c-gpio driver? Where to set the gpio pin numbers for SCL and SDA?
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May 25, 2010
How to create random numbers between -5.0 to +5.0
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May 10, 2010
I'm working with a rather large file of data taking from a tracking program on my phone, and trying to pull only the longitude and latitude from it. Any given line in the data looks more or less like this:
{"lon":-122.3083848,"time":1.273515839496E9,"source":"skyhook","nap":28,"altitude":0,"name":"location","hpe" :29,"bearing":0,"ncell":0,"lat":47.6544453}
I've run it through this command:
grep skyhook log-2010-05-10_18-17-28.json | cut -d"," -f1,10
to get this:
{"lon":-122.30872015,"lat":47.65812201}
{"lon":-122.3076686,"lat":47.6569975}
{"lon":-122.3079161,"lat":47.656395}
{"lon":-122.3096168,"lat":47.656218}
{"lon":-122.3096285,"lat":47.656206}
Which is a lot nicer, but I would prefer not to have to hand remove the non-number characters by hand since there are thousands of data points. what I could do to get it to just be longitude and latitude in 'number number' format?
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Aug 1, 2011
Does any one know the process or commands to get the serial no: of a h/w device from a host?
I am looking for serial No: of Hdd,Graphic card,processor,RAM
I can get the serials of HDD & RAM using hdparm & dmidecode,but don't know how to get it for processor & Graphics card.
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Mar 17, 2011
I want to use the Alt + numbers function in Ubuntu but I don't know how> I researched it first and i read I had to do Shift + Ctrl + numbers but ti doesn't work,
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May 13, 2010
I want wondering if I can ls files that start with numbers only in a folder.
Suppose:
001.txt
302.txt
[code]....
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Jun 3, 2010
Any way to show the permissions with numbers (777) instead of with letters (drwxrwxrwx) using "ls" command or any other command ?
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Mar 1, 2011
I am trying find files in a directory that contain numbers. I have tried ls /etc *[0-9]* but that doesn't work. If I cd to /etc and run ls *[0-9]* it almost works but it also includes results from within files. My last thought was to try: find /etc [0-9] -type f but this does not work either. My second problem is that I am trying to get list of files in a directory that were changed less than 10 hours ago, using grep, while leaving out directories. I am completely stuck with the second problem.
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Nov 16, 2010
Our assignment is to take in two numbers and add them. While the inputs will always be numbers, we are to inform the user if they are doing it wrong. My code:
[Code]....
The code worked fine before I tried to idiot-proof it. I'll probably end up nesting the if statements checking if the first two inputs are not null, but I'm more annoyed at why the script isn't working.
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Oct 6, 2009
In the file /var/log/kern.log, I see kernel logs in the following format,
Oct 6 11:18:30 machine kernel: [212.443755] Some logs...
What are the numbers in the bracket [212.443755] stands for?
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Jul 20, 2010
Is it possible for listing directory and files' permission into numbers?
Generally ls command shows directory and files' permission as follows;
[root:maestro:/home/ddisk_net]# ls -al
Total 44
drwx------ 4 ddisk_net users 4096 7월 20 10:40 .
drwxr-xr-x 21 root root 4096 7월 20 10:28 ..
-rw------- 1 ddisk_net webteam 5 7월 20 10:40 .bash_history
-rw-r--r-- 1 ddisk_net users 33 1월 22 2009 .bash_logout
[code].....
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Apr 22, 2010
I am using RHEL 5. In my Linux Box I have two Lan cards (eth0 and eth1). "eth0" is connected with network 192.168.10.0 and "eth1" is connected with network 192.168.11.0. Both Network are inter connected via routing. Now I want a situation where, I want to dedicatedly assign some port numbers against a lan card. Like eth0 will be assigned for ssh (22) and eth1 is assigned for telnet (23). So that, when a user connect to 22 port then he/she is connected to the server through eth0 , and when a user connect 23 port then he/she is connected to the server through eth1. Is it possible to do using iptables or other?
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