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Search found 1145 results on 46 pages for 'pipe'.

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• Can't pipe or redirect cygwin grep output

  - by Thomas

  How do I get grep to work properly in a regular cmd.exe? > grep -o 'ProductVersion\".*\".*\"' foo.txt | grep -o '[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+' foo.txt:ProductVersion" Value="59.59.140.59" grep: |: No such file or directory grep: grep: No such file or directory grep: [0-9]+\.[0-9]+\.[0-9]+\.[0-9]+: No such file or directory and > grep -o 'ProductVersion\".*\".*\"' foo.txt >> blah.txt foo.txt:ProductVersion" Value="59.59.140.59" grep: >>: No such file or directory grep: blah.txt: No such file or directory

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• how to record mic input and pipe the output to another program

  - by acrs

  Hi everyone Im trying to follow a tutorial on generating truly random bits How To Generate Truly Random Bits This is the command from the tutorial but it does not work rec -c 1 -d /dev/dsp -r 8000 -t wav -s w - | ./noise-filter >bits I know i can record my mic input using rec -c 1 no.wav this is the command i tried using rec -c 1 -r 8000 -t wav -s noise.wav | ./noise-filter >bits but i get root@xxc:~/cc# rec -c 1 -r 8000 -t wav -s noise.wav - | ./noise-filter >bits rec WARN formats: can't set sample rate 8000; using 48000 rec FAIL sox: Input files must have the same sample-rate I have complied noise-filter noise-filter I think the tutorial is using an older version of SOX and REC I'm using sox: SoX v14.3.2 on Ubuntu 12.04 server Can someone please help me ?

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• bash pipe construct to prepend something to the stdoutput of previous command

  - by AndreasT

  I want to use sendmail to send me stuff and want to do it in a oneliner. echo "mail content" | sendmail emailataddres.com Sends it without subject. The subject line must come before the Mail content, so I am looking for something along the lines of: echo "mail content" | prepend "Subject: All that matters" | sendmail emailataddres.com sed and awk tend to be really awkward to use and remember. EDIT:Just to clarify: echo "Mail content" is just an illustrating example. I need to be able to prepend stuff to stdout streams from any source. e.g.: ifconfig, zcat, etc..

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• Write to stdin of a running process using pipe

  - by aditya

  I am in a similar situation as in this post But I couln't get the solution provided there to work in my situation as the answer seems related to that question only. In particular, I couldnt understand what was the purpose of cat my.fifo | nc remotehost.tld 10000 In my case, I have a process running and waiting for input. how can I send input to that process using named pipes? I've tried echo 'h' > /proc/PID/fd/0 it just displays 'h' on the process' window.

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• Pipe to grep not working in zsh

  - by Yar

  I am doing something I always do in Bash: set | grep -i path and the output is Binary file (standard input) matches What's wrong? grep --help works, and set | more works too.

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• Thunderbird, Windows 7: How can I get a unique list of people who have sent me an email

  - by Parris

  Is there some command within Thunderbird or command line to will allow me to pipe a list of all email addresses I've received emails from to a file? I would like to do this for a specific email account and folder within Thunderbird as well, and not just all of my accounts. I have maybe 100 unique people who have sent me an email for some contest and it would be optimal not to have to type all of this stuff up by hand. Thanks!!!

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• Java Process "The pipe has been ended" problem

  - by Amit Kumar

  I am using Java Process API to write a class that receives binary input from the network (say via TCP port A), processes it and writes binary output to the network (say via TCP port B). I am using Windows XP. The code looks like this. There are two functions called run() and receive(): run is called once at the start, while receive is called whenever there is a new input received via the network. Run and receive are called from different threads. The run process starts an exe and receives the input and output stream of the exe. Run also starts a new thread to write output from the exe on to the port B. public void run() { try { Process prc = // some exe is `start`ed using ProcessBuilder OutputStream procStdIn = new BufferedOutputStream(prc.getOutputStream()); InputStream procStdOut = new BufferedInputStream(prc.getInputStream()); Thread t = new Thread(new ProcStdOutputToPort(procStdOut)); t.start(); prc.waitFor(); t.join(); procStdIn.close(); procStdOut.close(); } catch (Exception e) { e.printStackTrace(); printError("Error : " + e.getMessage()); } } The receive forwards the received input from the port A to the exe. public void receive(byte[] b) throws Exception { procStdIn.write(b); } class ProcStdOutputToPort implements Runnable { private BufferedInputStream bis; public ProcStdOutputToPort(BufferedInputStream bis) { this.bis = bis; } public void run() { try { int bytesRead; int bufLen = 1024; byte[] buffer = new byte[bufLen]; while ((bytesRead = bis.read(buffer)) != -1) { // write output to the network } } catch (IOException ex) { Logger.getLogger().log(Level.SEVERE, null, ex); } } } The problem is that I am getting the following stack inside receive() and the prc.waitfor() returns immediately afterwards. The line number shows that the stack is while writing to the exe. The pipe has been ended java.io.IOException: The pipe has been ended at java.io.FileOutputStream.writeBytes(Native Method) at java.io.FileOutputStream.write(FileOutputStream.java:260) at java.io.BufferedOutputStream.write(BufferedOutputStream.java:105) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:65) at java.io.BufferedOutputStream.write(BufferedOutputStream.java:109) at java.io.FilterOutputStream.write(FilterOutputStream.java:80) at xxx.receive(xxx.java:86) Any advice about this will be appreciated.

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• How do i pipe stdout/stderr in .NET?

  - by acidzombie24

  I want to do something like this ffmpeg -i audio.mp3 -f flac - | oggenc2.exe - -o audio.ogg i know how to do ffmpeg -i audio.mp3 -f flac using the process class in .NET but how do i pipe it to oggenc2? Any example of how to do this (it doesnt need to be ffmpeg or oggenc2) would be fine.

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• C++: Filling vector from the pipe.

  - by Arman

  Hello, I would like to fill my vector<float> from command line: more my.txt | myexe.x > result.txt What is the best way to open the pipe in C++? Thanks Arman.

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• how does pipe work

  - by lego69

  hello, explain me please how exactly pipe works, for example I have this snippet of the code set line = ($<) while(${#line} != 0) if(${#line} == 5) then echo line | sort | ./calculate ${1} endif set line = ($<) end I need to choose all rows with 5 words and after sort it and after transfer, but I'm confused, how will it work, first of all 'while' will take all information and after that transfer it to sort, or every iteration 'while' will do sort? thanks in advance

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• How Do I Convert Pipe Delimited to Comma Delimited with Escaping

  - by Russ Bradberry

  Hi, I am fairly new to scala and I have the need to convert a string that is pipe delimited to one that is comma delimited, with the values wrapped in quotes and any quotes escaped by "\" in c# i would probably do this like this string st = "\"" + oldStr.Replace("\"", "\\\\\"").Replace("|", "\",\"") + "\"" I haven't validated that actually works but that is the basic idea behind what I am trying to do. Is there a way to do this easily in scala?

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• Piping SoX in Python - subprocess alternative?

  - by Cochise Ruhulessin

  I use SoX in an application. The application uses it to apply various operations on audiofiles, such as trimming. This works fine: from subprocess import Popen, PIPE kwargs = {'stdin': PIPE, 'stdout': PIPE, 'stderr': PIPE} pipe = Popen(['sox','-t','mp3','-', 'test.mp3','trim','0','15'], **kwargs) output, errors = pipe.communicate(input=open('test.mp3','rb').read()) if errors: raise RuntimeError(errors) This will cause problems on large files hower, since read() loads the complete file to memory; which is slow and may cause the pipes' buffer to overflow. A workaround exists: from subprocess import Popen, PIPE import tempfile import uuid import shutil import os kwargs = {'stdin': PIPE, 'stdout': PIPE, 'stderr': PIPE} tmp = os.path.join(tempfile.gettempdir(), uuid.uuid1().hex + '.mp3') pipe = Popen(['sox','test.mp3', tmp,'trim','0','15'], **kwargs) output, errors = pipe.communicate() if errors: raise RuntimeError(errors) shutil.copy2(tmp, 'test.mp3') os.remove(tmp) So the question stands as follows: Are there any alternatives to this approach, aside from writing a Python extension to the Sox C API?

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• Email pipe to php script working only sometimes

  - by Rixius

  I have a php pipe script that takes an attached *.csv from an email and saves and parses it. When the email is sent from where it is supposed to be coming from, it silently errors, however, when I take that same email and resend it from my address it goes through just fine. is there any simple reason it could be doing this?

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• Eclipse CDT Linuxtools gives broken pipe error

  - by ole

  I am running Eclipse CDT 6.0.2 on a SLES 11 x86_64 platform. My project is of linuxtools type. I am getting the following error running builds: " ../libtool: line 747: echo: write error: Broken pipe make[2]: write error make[1]: *** [all recursive] Error 1 make[1]: write error make: *** [all recursive] Error 1 " Any help is appreciated.

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• pipe multiple files (gz) into c program,

  - by monkeyking

  Ive written a cprogram that works when i pipe data into my program using stdin like gunzip -c IN.gz|./a.out If I want to run my program on a list of files I can do something like for i `cat list.txt` do gunzip -c $i |./a.out done But this will start my program 'number of files' times. I'm interested in piping all the files into the same process run. Like doing for i `cat list.txt` do gunzip -c $i >>tmp done cat tmp |./a.out thanks.

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• Parsing pipe delimited string into columns?

  - by DMS

  Hello, I have a column with pipe separated values such as: '23|12.1| 450|30|9|78|82.5|92.1|120|185|52|11' I want to parse this column to fill a table with 12 corresponding columns: month1, month2, month3...month12. So month1 will have the value 23, month2 the value 12.1 etc... Is there a way to parse it by a loop or delimeter instead of having to separate one value at a time using substr? Thanks.

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• Is there any tutorial on connecting .NET 4 Pipeline with Pipeline from some C\C++ programm?

  - by Ole Jak

  Is there any tutorial on connecting .NET 4 Pipeline with Pipeline from some C\C++ programm? For example how to get data from VLC Pipeline output ... I mean VLC docs say that there command line args can eat name of pipe like YUV video output --yuv-file=<string> How to give such name to pipe created in your .Net programm so to be able to give it to other programms or resive from other programms?

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• Regular expression for pipe delimited and double quoted string

  - by Hiren Amin

  I have a string something like this: "2014-01-23 09:13:45|\"10002112|TR0859657|25-DEC-2013>0000000000000001\"|10002112" I would like to split by pipe apart from anything wrapped in double quotes so I have something like (similar to how csv is done): [0] => 2014-01-23 09:13:45 [1] => 10002112|TR0859657|25-DEC-2013>0000000000000001 [2] => 10002112 I would like to know if there is a regular expression that can do this?

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• Tee a Pipe Asynchronously

  - by User1

  I would like to write the same information to two pipes, but I don't want to wait for the first pipe to read. Here's an example mkfifo one mkfifo two echo hi | tee one two & cat one & cat two & cat one does not start reading until cat two is run. Is there a way to make cat one run without waiting?

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• gzip several files and pipe them into one input

  - by Daniel

  I have this program that takes one argument for the source file and then it parse it. I have several files gzipped that I would like to parse, but since it only takes one input, I'm wondering if there is a way to create one huge file using gzip and then pipe it into the only one input.

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• How to pipe the output of the serial port to a file in Windows

  - by Necip

  Hello guys, can somebody tell me how to pipe the output of the serial port to a file in Windows? In Linux the command would be: cat /dev/ttyS0 > /opt/logs/Serial.log Thanks in advance

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• grep pipe with sed

  - by 123Ex

  hi, This is my bash command grep -rl "System.out.print" Project1/ | xargs -I{} grep -H -n "System.out.print" {} | cut -f-2 -d: | sed "s/\(.*\):\(.*\)/filename is \1 and line number is \2/ What I'm trying to do here is,I'm trying to iterate through sub folders and check what files contains "System.out.print" (using grep) using 2nd grep trying to get file names and line numbers using sed command I display those to console. from here I want to remove "System.out.print" with "XXXXX" how I can pipe sed command to this? pls help me thanxx

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• How to pipe the output of a command to file on Linux

  - by morpheous

  I am running a task on the CLI, which prompts me for a yes/no. After selecting a choice, a vast amount of info scrolls on the screen - including several errors. I want to pipe the output to a file so I can see the errors - but a simple '' is not working since the command expects a keyboar input. i am running on Ubuntu 9.1

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• bash getting a fd of a pipe

  - by k0re

  Hi, Why does the following not work? exec 3<|cat $0 The idea is to get file-descriptor (3) of a pipe (| cat $0).

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• Are the double forward/backward pipe operators documented?

  - by Daniel

  I remember reading about the double pipe operators -- || and <|| -- somewhere and now I can't remember where. I can't find them on MSDN or in the language spec. Are they documented anywhere? Example let print a b = sprintf "%O %O" a b (1, 2) ||> print // val it : string = "1 2"

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