Adding -G flag under demo resulted in a crash, when getent is missing (fi. on a macbook)

[fgeorgatos]

was running fine without -G, but adding that makes hell break lose:

[...]
dn78foo|1_530_305040451553513113########|b|tbu|
 pc1bar|________________################|d|   |

Exiting. Thank you for ..watching ;)
[535][fotis.CTFwork-7: /Users/fotis/qtop]$ ./qtop -FG -b demo -w
Traceback (most recent call last):
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/runpy.py", line 122, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/runpy.py", line 34, in _run_code
    exec code in run_globals
  File "/Users/fotis/qtop/qtop.py", line 2193, in <module>
    display.display_selected_sections(savepath, SAMPLE_FILENAME, QTOP_LOGFILE)
  File "/Users/fotis/qtop/qtop.py", line 1257, in display_selected_sections
    display_func(*args) if not sections_off[idx] else None
  File "/Users/fotis/qtop/qtop.py", line 1359, in display_user_accounts_pool_mappings
    detail_of_name = get_detail_of_name(account_jobs_table)
  File "/Users/fotis/qtop/qtop.py", line 324, in get_detail_of_name
    p = subprocess.Popen(passwd_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py", line 623, in __init__
    errread, errwrite)
  File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/subprocess.py", line 1141, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

[sfranky]

@fgeorgatos
can't reproduce... works fine here. Did you try it on any other machines?

[sfranky]

fix in #263

[fgeorgatos]

OK, this was caused because of a) missing getent b) no need to seek getent when under demo

Case (a) is now handled gracefully via PR #263, meanwhile on a macbook getent may be simulated via: http://zzamboni.org/new/brt/2008/01/21/how-to-emulate-unix-getent-with-macosxs-dscl/index.html