The output tag has no wiki summary.
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continued… grep -c gives inconsistent outputs [duplicate]
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grep -c gives inconsistent outputs
I am trying to determine the number of processes that are running via the following command line:
ps aux | grep -c 'Xvfb :1'
When ...
1
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3answers
113 views
grep -c gives inconsistent outputs
I am trying to determine the number of processes that are running via the following command line:
ps aux | grep -c 'Xvfb :1'
When the process "fiji :1" is not running I sometimes get a value of 0 ...
3
votes
2answers
524 views
What is the use of binary output on stdout?
Some programs print their binary output directly on stdout. Here are some examples:
tar -c file.png
dd if=file.png
Well, I see that the output can be redirected to a file. But these programs ...
22
votes
5answers
1k views
Does running commands verbosely make them slower?
I've found myself using the -v flag for lots of applications less and less (especially for trivial stuff like tar and cp). However, when I did and I was, say, unzipping a large file, it would take ...
1
vote
1answer
68 views
Detect batch output presence
I've got a daily scheduled .bat batch script that runs Fossil, and automatically commits that day's changes to my projects' source tree. Now I've set it to run every day, including the weekends, ...
8
votes
4answers
19k views
Change the audio output device in Firefox
I'm trying to play music through Ventrilo and currently I use Virtual Audio Cable. The way it works is that in foobar2000 (a music playing program) I set the output device in preferences to Virtual ...
0
votes
1answer
133 views
Does this write to stdout or stdin?
If I type the following command in Linux:
cat textfile
The contents of textfile is displayed. What is cat actually writing to? Is it writing to stdout or stdin?
5
votes
1answer
508 views
pipes vs. redirects
I've been using pipes and redirects for a long time and just realized that I don't know exactly how they are different. I just know that if you want to store the output in a file, then you use >. ...
1
vote
3answers
386 views
See process output after being disconnect from a SSH session
I'm connecting to my web host from Windows 7 using putty ssh. When I start a script in the remote host, sometimes I get disconnected. I have to connect again, and from the command "ps
aux" I can see ...
1
vote
1answer
1k views
What are usual maximum output frequencies on computer sound cards?
Exactly what it says on the tin.
I have a Sound Blaster X-Fi Xtreme Audio Notebook sound card and I was measuring its output frequency using frequency counter connected to the card's output. ...
1
vote
3answers
630 views
Command line output to split files
I want to be able to split an output from a command line that goes into a file.
I want either or both of the following ways to split:
Split based on file size. If it gets to say 500kb, then create a ...
3
votes
2answers
851 views
How to copy FAR file manager's output
Hi guys, how do I copy FAR-Manager's console output? For example when I use ping command I want to copy it's output text, but not image.
Oh, and I would like to do so with keyboard! :)
0
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1answer
507 views
Outputing a Microphone input to a USB Audio output?
Say I have some beast USB speakers. I also have a Microphone input on the back of my PC.
The Microphone input will happily output on the same card, but I cannot figure out how to 'route' the output ...
1
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5answers
1k views
Output from rpm -qa, how to extract only the name of the package?
The output format from the command rpm -qa looks like the following:
abrt-1.1.14-1.fc14.x86_64
abrt-addon-ccpp-1.1.14-1.fc14.x86_64
abrt-addon-kerneloops-1.1.14-1.fc14.x86_64
...
1
vote
1answer
1k views
Direct sound from speakers (output) to mic (input)
This is an attempt make Skype and Ventrilo more fun/easier. I'm essentially looking for a method/hardware/application that does essentially the same thing as me physically moving my speakers to beside ...
5
votes
2answers
1k views
How to disable the output of 7-Zip?
I use 7-Zip to compress files inside a batch file like this:
...\right_path\7z a output_file_name.zip file_to_be_compressed
I got the following output:
7-Zip 4.65 Copyright (c) 1999-2009 Igor ...
0
votes
3answers
440 views
Lenovo n200 3000 very low sound on headphone jack
When i plugin my headphones i got very low sound on one side(left), right side has no sound at all. Speakers built in laptop works fine. Output for headphones stop working well few days ago. When i ...
0
votes
1answer
543 views
Sending computer audio output to multiple devices
I'm looking to take an audio signal from a computer (1/8"), or multiple computers if possible, and send its output to some sort of switch/audio box that would allow me to choose between different ...
2
votes
1answer
82 views
Does anyone know a way to play a video file with two its audio streams being simultaneously streamed to different output devices?
I would like to know if it is possible to listen to one audio stream via the audio-jack speakers and to the other via the usb headset (that would just give me an ability to watch movies in English ...
2
votes
1answer
570 views
Ubuntu Skype: How can I split ringing and calls to headphone and main speaker on a laptop?
I'm running Ubuntu 10.04 on a Fujitsu Siemens Amilo Pi 1505 laptop. Normally, when I plug my headphones in, all sound is diverted to them. I haven't found anything in sound preferences that changes ...
1
vote
3answers
772 views
iptables LOG actio writes to STDOUT
when I use LOG action in some chane of iptables rules, I get the output both in STDOUT or STDERR of the xm console and in /var/log/messages.
Is there way to make iptables to write only to log ...
3
votes
2answers
232 views
Vim/Cygwin: No linebreaks in :! output
I'm using Vim via MinTTY under Cygwin. When I issue a command like
:!ls -la
the displayed output doesn't show newlines correctly. It rather just jumps to the virtual column of the next line, where ...
0
votes
2answers
2k views
Filtering output by OR condition in Linux
is there some way to filter output of command by OR condition in Linux?
There is filtering by AND condition with grep in way like:
ls -l | grep "^a" | grep "z$"
That says: list all files that ...
0
votes
2answers
4k views
How to output to S-Video on Windows XP in single-monitor mode (clone display)?
I am using an IBM ThinkPad T30 running Windows XP. It is connected to a TV system via S-Video output.
Windows is currently set up in multi-monitor mode with monitor 2 being output to S-Video. ...
1
vote
3answers
433 views
Copy and paste RESULTS of a file search
In order for me to get the results of a file search in a readable format, I use the following command line in a command prompt:
dir *.* /s > myResultList.txt
I then open that list in Excel, use ...
0
votes
4answers
3k views
How to play MIDI-file to some midi output device?
I have midi file (.mid) and want to specify what output device it will be played to. Now it is played to some standard Windows midi device ("Microsoft MIDI Mapper" or something like that).
(Windows ...
1
vote
2answers
698 views
SQL Server Management Studio Express - include date/time in Results or Messages
In SQL Server Management Studio Express 2005 is it possible to output the date and time that a query completed in the Results or Messages windows?
(without having to manually add a SELECT Getdate() ...
4
votes
2answers
69 views
Is there a program that can colourize the output of any linux command?
Or would I have to write my own? What's the best language for building a tool of this kind?
I'm kind of new to linux, but I'm guessing that you could pass the output of a program to a particular ...
0
votes
1answer
254 views
How do I quickly switch to/from the front panel speakers in Ubuntu?
I have speakers attached to my front panel sound output that I switch to frequently. Currently the process is to open Terminal, type "alsamixer", scroll over to "Front Panel", and press "M" to ...
1
vote
1answer
827 views
USB sound card with 6.3mm jack output
I have a pair of Sennheiser 555 semi-professional headphones. These have a 6.3mm jack and a 3.5mm jack adapter. I wish I could buy an USB sound card for my laptop that would have a 6.3mm output not ...
2
votes
2answers
120 views
Is there a tool like `script` (Linux/Solaris/etc) for Windows?
Perhaps the worst-named tool in the *nix world, script is extremely handy when you want to capture all the output of a terminal session.
Is there a tool like it for Windows? Specifically, without ...
0
votes
2answers
5k views
Windows 7 does not recognize HDMI audio output
I recently upgraded to Windows 7 on a Dell 545 MT with audio/video output via an NVIDIA 9800 GTX+ to a flat screen television.
I have installed/uninstalled/reinstalled all the recent drivers from ...
0
votes
1answer
50 views
Ubuntu Karmic…audio is shady and useless source names
I've got 3 audio outputs (headphones, speakers, and usb headphones) but the source names in all the video players are pretty useless...Pulse, Alsa, Unix, etc.
Is there an easy way to get more ...
9
votes
2answers
2k views
How does a sound card determine if headphones are plugged in?
This is actually two questions in one.
First, how do soundcards (the cheap ones) "detect" whether the headphones are plugged in? By measuring resistance or by some other technique?
Second, can I ...
0
votes
1answer
1k views
Diverting sound output of MCE to SPDIF
I have an ASUS SupremeFX II audio card (which in fact is an onboard audio riser slot) with the default drivers that are pre-installed by Windows 7 x64 for this card.
I am able to manually switch ...
0
votes
2answers
333 views
Excel regression output--funky p-value
Anybody know what it means when the p-value for X in an Excel regression ouput isn't something like ".0263," but instead is "3.9081E-86"?
By the way, this is for one independent and one dependent ...
21
votes
2answers
21k views
What does “2>&1” do in command line?
I know that the > sign is used for output redirection in the command line, but I'm having trouble finding something that explains the use of 2>&1 in the command line. For example:
curl ...
0
votes
2answers
1k views
Is it possible to have multiple audio outputs?
I have two screens attatached to my PC, one is a standard desktop monitor and the other is a TV. I dont use them at the same time.
The TV is connected via HDMI to my graphics card (ATI Radeon 5750) ...
6
votes
2answers
50k views
How do I enable multiple audio outputs on Windows 7?
For Windows 7, 64 bit: I have a digital SPDIF output to my stereo, which controls speakers in other rooms. I also have a set of speakers connected to the regular audio jack at the computer. This ...
1
vote
3answers
776 views
normalize .wav sounds
When playing counter-strike certain servers will force you to download sound files their server uses. These range from song clips to sounds from other games like unreal tournament and quake. The ...
4
votes
1answer
5k views
Bash command to cut output after x number of lines
I'm looking for a bash command, which I can use to limit the number of lines of a file or another command output. E.g.
ls -thor | limit 10
would limit the output of the ls command to 10 lines (in ...
