Yes, you can use Python from the command line. python -c <stuff> will run <stuff> as Python code. Example: python -c “import sys; print sys.path” There isn’t a direct equivalent to the -p option for Perl (the automatic input/output line-by-line processing), but that’s mostly because Python doesn’t use the same concept of $_ and whatnot … Read more
Try this: import sys import time k = 0 try: buff=”” while True: buff += sys.stdin.read(1) if buff.endswith(‘\n’): print buff[:-1] buff=”” k = k + 1 except KeyboardInterrupt: sys.stdout.flush() pass print k
tl;dr: When PowerShell pipes a string to an external program: It encodes it using the character encoding stored in the $OutputEncoding preference variable It invariably appends a trailing (platform-appropriate) newline. Therefore, the key is to avoid PowerShell’s pipeline in favor of the native shell’s, so as to prevent implicit addition of a trailing newline: If … Read more
Well, if you want to use pipes in the Process you exec, then you need to start a shell like bash, and give ps and grep on the command line to that shell: bash -c “echo $PATH” Try this to understand what I mean, then use this: bash -c “ps axu | grep PATTERN” to … Read more
There are a few bugs in your code, but the most important is that you’ve specified FALSE for the bInheritHandles argument to CreateProcess. The new process can’t use the pipe if it doesn’t inherit the handle to it. In order for a handle to be inherited, the bInheritHandles argument must be TRUE and the handle … Read more
Passing everything to bash works, but here’s a more idiomatic way of doing it. package main import ( “fmt” “os/exec” ) func main() { grep := exec.Command(“grep”, “redis”) ps := exec.Command(“ps”, “cax”) // Get ps’s stdout and attach it to grep’s stdin. pipe, _ := ps.StdoutPipe() defer pipe.Close() grep.Stdin = pipe // Run ps first. … Read more
I think that at least some of progress reports gets silenced when output is not a terminal (tty). I’m not sure if it applies to your case, but try to pass –progress option to ‘git clone’ (i.e. use git clone –progress <repository>). Though I don’t know if it is what you wanted to have.
By executing “java Read < input.txt” you’ve told the operating system that for this process, the piped file is standard in. You can’t then switch back to the command line from inside the application. If you want to do that, then pass input.txt as a file name parameter to the application, open/read/close the file yourself … Read more
From the bash man page: “Each command in a pipeline is executed as a separate process (i.e., in a subshell).” I suppose it would be possible to execute one component of a pipeline in the current shell (i.e. the first, or the last, or maybe one in the middle), it doesn’t play favorites like this: … Read more