Iteractive qstat viewer $ gcc -o iqstat -O3 -lncurses iqstat.c

iqstat.c

/******************************************************************************
**  iqstat - Interactive qstat viewer
**
**  Created by kotone on 2015/01/16.
**  Copyright (c) 2015 Kotone Itaya. All rights reserved.
**
** iqstat is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** iqstat is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with iqstat.  If not, see <http://www.gnu.org/licenses/>.
******************************************************************************/

#include <ncurses.h>
#include <stdlib.h>
#include <time.h>

char* exec(char* cmd) {
  FILE* pipe;
  char* out;
  int i, c;

  if((out = (char*)malloc(sizeof(char))) == NULL) {
    return NULL;
  }

  if((pipe = popen(cmd, "r")) == NULL) {
    return NULL;
  }

  for(i = 0; (c = fgetc(pipe)) != EOF; ++i) {
    if((out = (char*)realloc(out, sizeof(char) * (i + 1))) == NULL) {
      return NULL;
    }
    out[i] = c;
  }

  pclose(pipe);

  return out;
}

char* join(char* s1, char* s2, char d) {
  char* p;
  int i, c, l = 0;

  if((p = (char*)malloc(sizeof(char))) == NULL) {
    return NULL;
  }

  for(i = 0; (c = s1[i]) != '\0'; ++i) {
    if((p = (char*)realloc(p, sizeof(char) * (l + 1))) == NULL) {
      return NULL;
    }
    p[l] = s1[i];
    ++l;
  }

  if((p = (char*)realloc(p, sizeof(char) * (l + 1))) == NULL) {
    return NULL;
  }
  p[l] = d;
  ++l;


  for(i = 0; (c = s2[i]) != '\0'; ++i) {
    if((p = (char*)realloc(p, sizeof(char) * (l + 1))) == NULL) {
      return NULL;
    }
    p[l] = s2[i];
    ++l;
  }

  return p;
}

char* join_vec(int argc, char* argv[], char d, int offset) {
  char* p;
  int i;

  if((p = (char*)malloc(sizeof(char))) == NULL) {
    return NULL;
  }

  for(i = offset; i < argc; ++i) {
    p = join(p, argv[i], d);
  }

  return p;
}

int main(int argc, char* argv[]) {
  initscr();
  noecho();
  cbreak();
  curs_set(FALSE);

  char* cmd;
  char* out;
  time_t timer;

  cmd = join("qstat", join_vec(argc, argv, ' ', 1), ' ');

  while(1) {
    time(&timer);
    erase();
    mvprintw(0, 0, "%s", ctime(&timer));
    if((out = exec(cmd)) != NULL) {
      mvprintw(1, 0, "%s", out);
    }
    refresh();
    usleep(66);
  }

  endwin();

  return 0;
}

Thanks for this, super useful, although on my machine I had to compile with -ltinfo

Thanks for your comment! Must be useful info for people with compiling issues. I must admit I wasn't really considering cross-platform compatibilty back then.

@ktnyt
There's a bug where quote marks are consumed, so running

iqstat -u "*"

Actually tries to run

iqstat -u *

It works if you do

iqstat -u \"*\"

Actually I've made my own version that doesn't have a memory leak: https://gist.github.com/JonnoFTW/11389ecfec0ceda67a554f7650cf9cef