Tagged Questions
2
votes
2answers
47 views
syntax of ls --hide= and ls --ignore=
ls --hide and ls --ignore provides the possibility leave out files defined through regular expressions set after the --ignore= part. The latter makes sure that this option isn't turned off via -a, -A. ...
2
votes
5answers
377 views
How can I improve my productivity in Linux? [closed]
I have been mostly using Windows but I know my way around a Linux system but I am not as productive as in Windows.
I am looking for some "survival" guidelines on what should I focus to be able to ...
-1
votes
3answers
83 views
run file from different directory [closed]
I have a directory mainfolder with a subdirectory execution which contains a configure script. I can switch to the execution directory and run ./configure and it works fine. Now I'm trying to figure ...
3
votes
3answers
93 views
Fix “firefox is already running” issue in Linux
I am trying to open Firefox in CentOS, but I'm getting the following message:
Firefox is already running but is not responding
and Firefox doesn't open. I tried this in command line:
kill ...
1
vote
0answers
40 views
add audio from playing file to microphone stream
I need to add a sound to what the microphone is capturing, is it possible?
I started with
man aplay
and found that I can do
aplay -D PCMdevice filepath.wav
so then I listed the PCM devices with
...
6
votes
4answers
151 views
Protecting Devices from dd and fdisk Commands
I'm wondering if there is some way to prevent certain certain devices from becoming the output file of the dd command and the target of the fdisk command. I'm currently using the two operations to set ...
2
votes
2answers
57 views
Running K3b from the command line
I wish to run K3b from the command line. I do not mind if it opens windows, as long as I do not have to click in them and they ultimately close.
Specifically, I wish to run k3b --copy /dev/cdrom.
This ...
4
votes
3answers
108 views
How can I display octal notation of permissions with ls - and can octal represent all permissions? [duplicate]
After looking at the man page for ls on my system and searching Google, I see there IS a hack of way to use awk or perl to show octal permissions when using ls, but with bash is there anything more ...
1
vote
0answers
72 views
Install Linux Mint 14 from CLI
I'm trying to install Linux Mint 14 from a live cd on a HP Pavilion laptop. I got some problem with X and the nvidia card, which prevents X from starting (and therefore prevents the live installer ...
2
votes
2answers
86 views
Get network information through Ubuntu Terminal
Is there a command where, when entered outputs information such as:
If the network connection is wired or wireless
if it is a wireless network, the name of the wireless network
How strong the signal ...
0
votes
2answers
73 views
Grep to search directories for patterns inside a text file
I have a file where it contains a list of search patterns (searchPattern.txt). Its contents is similar to the contents below where there are 3000+ of them.
123456
234567
345678
.
.
.
What I wanted ...
2
votes
1answer
52 views
Proper syntax for “id -r” command
I'm trying to see if id -r will print out the UID or username of the user who logged into the system despite any su's or sudo's. I'm interested in doing this so I can keep people a little more ...
4
votes
0answers
70 views
why . and .. are listed when ls -a command executed? [duplicate]
When I execute the ls -a command, all files and folders in that directory listed, as well as . and .. are listed too.
Why is that? Are they a file or folder?
1
vote
1answer
86 views
How to access u boot environment from linux?
How can I access and change the u-Boot env variables in linux. Using the u-boot/tools/env directory in u boot directory:
u-boot$ make env
Which created the executable file fw_printenv. I copied ...
2
votes
1answer
57 views
Confirm before exit the command-prompt
I am trying to have a confirmation message every time I type exit command in the command-prompt. To do this, I have tried to use trap in .bashrc file but it seem like trap is not a solution as it run ...
0
votes
4answers
65 views
concatenating multiple files with multiple headers
Im trying to concatenate multiple files with multiple headers to have one file with all the information in it for example.
File 1:
Numbers
1
2
3
Letters
A
B
C
File 2:
Numbers
4
5
6
Letters
D
E
...
0
votes
1answer
58 views
finger and who commands usage
I know that the finger command used to display information about local and remote users.
finger --> display users log in on local machine, even if remotely.
finger @hostname --> display users log in ...
1
vote
2answers
146 views
cannot mount .img file - “not a directory” error
I try to execute the following command on an ubuntu 12.04 system:
sudo mount minix203.img -o loop -t minix /mnt/myminix/
in order to mount an .img file with minix partition; and get the following ...
0
votes
1answer
51 views
How to get the Installation path of binary and logic file in Daemon in Arch Linux
I want to know that if i install a daemon service in Arch Linux, then what will be the path of the files that will get install. also which files will be install where.
0
votes
3answers
159 views
Regular Expression for finding double characters in Bash
I am looking for a regular expression that finds all occurences of double characters in a text, a listing, etc. on the command line (Bash).
Main Question: Is there a simple way to look for sequences ...
13
votes
6answers
821 views
Can a Linux command have capital letter(s)?
Can a Linux command have capital letter(s)? I know it's supported but i want to be sure if it's a "problem" or considered "not a good thing"?
0
votes
0answers
131 views
get RSSI using commands?
mu network is group created by WIFI DIRECT, so i need to measure the signal strength RSSI between the client and its owner for android platform.
So, assume we know SSID and MAC address for owner or ...
1
vote
1answer
224 views
How to monitor other nodes to get RSSI?
I need to measure RSSI between two peers of nodes in same network.
If I have these two information:
SSID for their network.
IP for the target node to get the RSSI regarding it.
So I found this ...
2
votes
3answers
168 views
Why does Firefox refuse to die despite killing it with pkill -9?
I am issuing the following command to kill Firefox on my Red Hat Linux box:
[subhrcho@slc04lyo ~]$ pkill -9 -f firefox
[subhrcho@slc04lyo ~]$
However, when I try to invoke Firefox through ...
0
votes
0answers
173 views
running matlab command line in screen — can't type after reattaching
I'm logging in via ssh to a more powerful computer, on this I start a screen session with screen -S mine and then open a matlab command line via matlab -nodesktop -nodplash and then run within matlab ...
3
votes
2answers
110 views
Digging through huge gziped log files
From time to time I need to dig through huge log files (several GB unpacked) to debug a specific error.
Now, vim is OK for browsing through the file, but when I need to find something in the file ...
1
vote
2answers
373 views
How to display open file descriptors but not using lsof command
Hi I have read Here that lsof is not an accurate way of getting the number of File Descriptors that are currently open. He recommended to use this command instead
cat /proc/sys/fs/file-nr
While ...
0
votes
1answer
71 views
NSLookup how to interpret output
Hi can someone help me to understand what this NSLOOKUP command's output
[x]$ nslookup sample.abc.com
Server: 161.43.32.162
Address: 161.43.32.162#53<-- ???
Name: sample.abc.com
...
0
votes
1answer
121 views
'ss' command for checking sockets not found
I get an error when I try to execute this command on Red Hat Linux.
$ ss -s
-bash: ss: command not found
It is supposed to be for checking socket statistics. How do I execute this?
1
vote
1answer
70 views
What does the number mean in a man page? [duplicate]
Possible Duplicate:
What do the numbers in a man page mean?
If I typeman ls, I seeLS(1) in the top left and top right corners of the manpage.
I also see programs on the internet being ...
0
votes
0answers
143 views
Do you know any good replacement for bluez-simple-agent?
I'm using an old bluez version (3.36) and I need a bluetooth agent. I saw that there is bluez-tools but it requires a higher version of bluez. So, are there any other agents out there? I would preffer ...
2
votes
1answer
105 views
How can I remaster a text-based linux distro?
So I have a Ubuntu minimal install, it is exactly the way I want it when I want to have a fresh install, with the included settings, packages, etc.
It has no desktop, it is completely CLI.
What is ...
3
votes
3answers
91 views
Filesize difference of same name folders
Two different folders, have the same name but they have different filesize. Is there any linux command that can compare two folders and tell me the diff in filesize at the same time?
1
vote
2answers
145 views
Change command name in Linux [duplicate]
Possible Duplicate:
creating abbreviations for commonly used paths
I'm new to the Linux platform. Is there any way to rename the commands available in Linux.
For example, I use the clear ...
0
votes
1answer
213 views
Uncompress txt.gz files
Trying to uncompress txt.gz files on Linux. gzip, gunzip, unzip are not recognizing the file format. The archive is guaranteed to be not corrupted.
1
vote
2answers
265 views
Concatenate multiple files under subdirectories
My directory structure is given below
x:\Project_2012-158A\Sample_4041
SampleSheet.csv
4041_CGTACG_L002_R1_001.fastq
4041_CGTACG_L002_R2_001.fastq
4041_CGTACG_L006_R2_001.fastq
...
1
vote
1answer
109 views
questions on find and grep
With respect to the following find command-line
find . -type f -exec grep -l strings {} \;
I do not understand the usage of -exec and {} \ Thanks.
1
vote
4answers
512 views
Checking if a file exists in several directories
I've been working on this far too long and need some help.
I need a script that will look at files in a directory and see if it exists in one of several directories.
I need something like this:
for ...
2
votes
2answers
3k views
No network connection in CentOS 6.3 Minimal under VMWare Player
I'm trying to replicate in VMWare Player the exact same conditions I have under my Dedicated Server for testing purposes.
Now, the thing is that that when I try to install something, or ping ...
1
vote
1answer
646 views
Edit a file on CentOS 6.3 Minimal
I installed CentOS 6.3 Minimal on VMWare Player, and I realized how 'minimal' the setup is...
Don't have network connectivity. From what I searched on google, I need to edit the file
...
3
votes
2answers
343 views
Getting linux webcam state via command line or API
I would, preferably, like to know of a command I can run that will let me know whether a webcam is on/off or recording/not recording, etc. Maybe a way to see if any programs are currently accessing it ...
1
vote
0answers
71 views
Running Tomcat MySQL and Apache under a group
I am trying to set up a web server at home using Ubuntu, but prefer my bash scripts to be platform agnostic hence why I am asking here. I also dislike apt-get everything. I am trying to create a ...
5
votes
2answers
566 views
What does “--” mean in Linux/Unix command line? [duplicate]
Possible Duplicate:
What does “--” (double-dash) mean?
git diff [options] [<commit>] [--] [<path>…]
In here, how should I understand what [--] means? And when should I use it.
10
votes
2answers
395 views
Highlight the three last updated files in ls output
Is there any way to overload or wrap the ls command so that it will highlight / underline / otherwise make obvious the last three modified files?
I know that I can simply ls -rtl to order by reverse ...
1
vote
1answer
64 views
Rebooting makes me lose my password-less keys on other machines
When I reboot my machine (as I did today) I seem to lose some functionality, specifically my previous ssh keys that I had copied over to other machines that had allowed me to login without a password ...
1
vote
2answers
263 views
Putting Linux processes on certain CPU cores [duplicate]
Possible Duplicate:
How can I set the processor affinity of a process on Linux?
Computer CPUs have many cores insde them nowadays.
I have always wondered if there is a way to, when I start ...
2
votes
1answer
270 views
Regarding generating intersection and union of two csv files
I have two csv files, there are some overlap columns between these two files. Assume one file is called as A.csv and another is called as B.csv. The intersection of A and B is called as C.
I would ...
6
votes
3answers
364 views
Understanding different Linux Distros
I'm having a little bit of confusion when understanding linux based OS's. When I download the newest version of Mint and Ubuntu, aren't they the "same" at their core (kernel)? It just seems that they ...
1
vote
2answers
152 views
Program to manipulate Samba shares (net.exe equivalent)
Is there an equivalent to the NET.exe suite for linux systems with which I can do net view queries for example?
1
vote
0answers
70 views
Creating and updating the packages for many Debian systems
I'm using a Lenny (Debian 5) for remotely controlled PC's (around 100 PC's) which will be pinging to my apache server. I'm developing a patch twice in a week to keep updated with the latest versions ...
