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#! /usr/bin/env python # Watch line printer queue(s). # Intended for BSD 4.3 lpq. import os import sys import time DEF_PRINTER = 'psc' DEF_DELAY = 10 def main(): delay = DEF_DELAY # XXX Use getopt() later try: thisuser = os.environ['LOGNAME'] except: thisuser = os.environ['USER'] printers = sys.argv[1:] if printers: # Strip '-P' from printer names just in case # the user specified it... for i, name in enumerate(printers): if name[:2] == '-P': printers[i] = name[2:] else: if os.environ.has_key('PRINTER'): printers = [os.environ['PRINTER']] else: printers = [DEF_PRINTER] clearhome = os.popen('clear', 'r').read() while True: text = clearhome for name in printers: text += makestatus(name, thisuser) + '\n' print text time.sleep(delay) def makestatus(name, thisuser): pipe = os.popen('lpq -P' + name + ' 2>&1', 'r') lines = [] users = {} aheadbytes = 0 aheadjobs = 0 userseen = False totalbytes = 0 totaljobs = 0 for line in pipe: fields = line.split() n = len(fields) if len(fields) >= 6 and fields[n-1] == 'bytes': rank, user, job = fields[0:3] files = fields[3:-2] bytes = int(fields[n-2]) if user == thisuser: userseen = True elif not userseen: aheadbytes += bytes aheadjobs += 1 totalbytes += bytes totaljobs += 1 ujobs, ubytes = users.get(user, (0, 0)) ujobs += 1 ubytes += bytes users[user] = ujobs, ubytes else: if fields and fields[0] != 'Rank': line = line.strip() if line == 'no entries': line = name + ': idle' elif line[-22:] == ' is ready and printing': line = name lines.append(line) if totaljobs: line = '%d K' % ((totalbytes+1023) // 1024) if totaljobs != len(users): line += ' (%d jobs)' % totaljobs if len(users) == 1: line += ' for %s' % (users.keys()[0],) else: line += ' for %d users' % len(users) if userseen: if aheadjobs == 0: line += ' (%s first)' % thisuser else: line += ' (%d K before %s)' % ( (aheadbytes+1023) // 1024, thisuser) lines.append(line) sts = pipe.close() if sts: lines.append('lpq exit status %r' % (sts,)) return ': '.join(lines) if __name__ == "__main__": try: main() except KeyboardInterrupt: pass