Hi All,

Request your help on how to convert the output of std.process.pipeProcess to hash string

auto test(in Redirect redirect=Redirect.stdout | Redirect.stderr) {
    import std.process;
    import std.digest.crc;
    import std.stdio: writeln;

     result = std.process.pipeProcess("whoami" ~ "/?", redirect);
     auto content = result.stdout.readln;
     auto hash = crc32Of(content);
     return hash;
}
void main() {
  writeln(test);
}

Output: All writes the below.

[0, 0, 0, 0]

Required: Read the completed output and convert it to a single hash string.

From,
Vino.B

not sure why you append "/?" to the program name.

On Saturday, 9 September 2023 at 15:44:44 UTC, Vino wrote:

With a slightly modified command line that works on linux here :

import std.process, std.stdio;

auto test(in Redirect redirect=Redirect.stdout | Redirect.stderr) {
    import std.digest.crc;
    import std.stdio: writeln;

     auto result = std.process.pipeProcess(["whoami"], redirect);
     auto content = result.stdout.readln;
     auto hash = crc32Of(content);
     return hash;
}
void main() {
  writeln(test);
}

not sure why you append "/?" to the program name.

Hi All,

  Request your help on how to convert the output of std.process.pipeProcess to hash string

auto test(in Redirect redirect=Redirect.stdout | Redirect.stderr) {
     import std.process;
     import std.digest.crc;
     import std.stdio: writeln;

      result = std.process.pipeProcess("whoami" ~ "/?", redirect);
      auto content = result.stdout.readln;
      auto hash = crc32Of(content);
      return hash;
}
void main() {
   writeln(test);
}

Output: All writes the below.

[0, 0, 0, 0]

Required: Read the completed output and convert it to a single hash string.

From,
Vino.B
Good that you could solve your problem already.

On 09.09.23 17:44, Vino wrote:

auto test(in Redirect redirect=Redirect.stdout | Redirect.stderr) {
     import std.process;
     import std.digest.crc;
     import std.stdio: writeln;

      result = std.process.pipeProcess("whoami" ~ "/?", redirect);
      auto content = result.stdout.readln;
      auto hash = crc32Of(content);
      return hash;
}
void main() {
   writeln(test);
}

[0, 0, 0, 0]

Just three remarks:

First I would recommend to use std.process : execute instead of
pipeProcess in this usecase, as this will wait properly for the process to exit and it also will collect its output.

Second its always good to test the exit status of the process ... just in case.

Third I would not look at stderr too much .. well behaved commandline tools should not put data for machines there.

Kind regards,
Christian

Just three remarks:

First I would recommend to use std.process : execute instead of
pipeProcess in this usecase, as this will wait properly for the process to exit and it also will collect its output.

Second its always good to test the exit status of the process ... just in case.

Third I would not look at stderr too much .. well behaved commandline tools should not put data for machines there.

Kind regards,
Christian