io-redirection

问题 I have this program that listens to the microphone and tries to recognize what was said: #!/usr/bin/env python3 import speech_recognition recognizer = speech_recognition.Recognizer() class Recognition: def __init__(self): self.recognizer = speech_recognition.Recognizer() def listen(self): with speech_recognition.Microphone() as source: self.recognizer.adjust_for_ambient_noise(source) self.audio = self.recognizer.listen(source) def recognize_sphinx(self): decoder = self.recognizer.recognize

问题 I have following code to read and redict the output of gawk to a textfile (instead of doing this with shell-execute and using > ): var processStartInfo = new ProcessStartInfo { FileName = "gawk.exe", Arguments = $@"-F ""{separator}"" -f ""{scriptFullFileName}"" ""{inputFullFileName}""", UseShellExecute = false, WorkingDirectory = workingDirectory, RedirectStandardOutput = true, CreateNoWindow = true }; using (var process = Process.Start(processStartInfo)) { using (var streamReader = process

问题 I completly don't understand this behaviour. I have a very simple Perl script: #!/usr/bin/perl use strict; use warnings; print "line 1\n"; print STDERR "line 2\n"; If I run it from console I will get what I expect: $ perl a.pl line 1 line 2 But if I redirect it to file, I will get the lines in the reverse order: $ perl a.pl &> a $ cat a line 2 line 1 How can I capture all the outputs STDOUT+STDERR to the file with the same order I get in the console? 回答1: This is an effect of buffering. When

问题 I have the following program to test input redirection in Python. a = int(raw_input("Enter a number: ")) b = raw_input("Enter a string: ") print "number entered = ", a print "string entered = ", b If I run this program without redirection, the input and output are shown below: Enter a number: 100 Enter a string: sample number entered = 100 string entered = sample Now, to test input redirection, I have a file a.txt named that contains: 100 sample However, when I run with input redirected from

问题 I have the following program to test input redirection in Python. a = int(raw_input("Enter a number: ")) b = raw_input("Enter a string: ") print "number entered = ", a print "string entered = ", b If I run this program without redirection, the input and output are shown below: Enter a number: 100 Enter a string: sample number entered = 100 string entered = sample Now, to test input redirection, I have a file a.txt named that contains: 100 sample However, when I run with input redirected from

问题 I've tried: scp -r file host:~/ 2>&1 | tee -a file.log scp -r file host:~/ >file.log 2>&1 scp -r file host:~/ &>file.log and i only ever get a blank file. what am I doing wrong? the goal is to capture the output of the files transferred to the text file 回答1: You can achieve this using script : script -q -c "scp -r file host:~/" > file.log 来源： https://stackoverflow.com/questions/32637393/redirect-scp-output-to-file

问题 I've tried: scp -r file host:~/ 2>&1 | tee -a file.log scp -r file host:~/ >file.log 2>&1 scp -r file host:~/ &>file.log and i only ever get a blank file. what am I doing wrong? the goal is to capture the output of the files transferred to the text file 回答1: You can achieve this using script : script -q -c "scp -r file host:~/" > file.log 来源： https://stackoverflow.com/questions/32637393/redirect-scp-output-to-file

问题 I've tried: scp -r file host:~/ 2>&1 | tee -a file.log scp -r file host:~/ >file.log 2>&1 scp -r file host:~/ &>file.log and i only ever get a blank file. what am I doing wrong? the goal is to capture the output of the files transferred to the text file 回答1: You can achieve this using script : script -q -c "scp -r file host:~/" > file.log 来源： https://stackoverflow.com/questions/32637393/redirect-scp-output-to-file

问题 I've tried: scp -r file host:~/ 2>&1 | tee -a file.log scp -r file host:~/ >file.log 2>&1 scp -r file host:~/ &>file.log and i only ever get a blank file. what am I doing wrong? the goal is to capture the output of the files transferred to the text file 回答1: You can achieve this using script : script -q -c "scp -r file host:~/" > file.log 来源： https://stackoverflow.com/questions/32637393/redirect-scp-output-to-file

问题 My intent was to have all the output of my bash script displayed on the console and logged to a file. Here is my script that works as expected. #!/bin/bash LOG_FILE="test_log.log" touch $LOG_FILE # output to console and to logfile exec > >(tee $LOG_FILE) 2>&1 echo "Starting command ls" ls -al echo "End of script" However I do not understand why it works that way. I expected to have exec >>(tee $LOG_FILE) 2>&1 work but it fails although exec >>$LOG_FILE 2>&1 indeed works. I could not find the