Update of /cvsroot/python/python/dist/src/Demo/curses
In directory usw-pr-cvs1:/tmp/cvs-serv19728
Modified Files:
README
Added Files:
repeat.py
Log Message:
Added "repeat.py" -- repeatedly execute a shell command (like
watch(1)). Updated and untabified the README file.
--- NEW FILE: repeat.py ---
#! /usr/bin/env python
"""repeat <shell-command>
This simple program repeatedly (with 1-second intervals) executes the
shell command given on the command line and displays the output (or as
much of it as fits on the screen). It uses curses to paint each new
output on top of the old output, so that if nothing changes, the
screen doesn't change. This is handy to watch for changes in e.g. a
directory or process listing.
To end, hit Control-C.
"""
# Author: Guido van Rossum
# Disclaimer: there's a Linux program named 'watch' that does the same
# thing. Honestly, I didn't know of its existence when I wrote this!
# To do: add features until it has the same functionality as watch(1);
# then compare code size and development time.
import os
import sys
import time
import curses
def main():
if not sys.argv[1:]:
print __doc__
sys.exit(0)
cmd = " ".join(sys.argv[1:])
p = os.popen(cmd, "r")
text = p.read()
sts = p.close()
if sts:
print >>sys.stderr, "Exit code:", sts
sys.exit(sts)
w = curses.initscr()
try:
while 1:
w.erase()
try:
w.addstr(text)
except curses.error:
pass
w.refresh()
time.sleep(1)
p = os.popen(cmd, "r")
text = p.read()
sts = p.close()
if sts:
print >>sys.stderr, "Exit code:", sts
sys.exit(sts)
finally:
curses.endwin()
main()
Index: README
===================================================================
RCS file: /cvsroot/python/python/dist/src/Demo/curses/README,v
retrieving revision 1.3
retrieving revision 1.4
diff -C2 -r1.3 -r1.4
*** README 2000/12/21 16:26:37 1.3
--- README 2001/01/05 20:54:07 1.4
***************
*** 11,19 ****
course.
! ncurses.py -- currently only a panels demo
XXX this won't work until panel support is checked in
! rain.py -- raindrops keep falling on my desktop
! tclock.py -- ASCII clock, by Howard Jones
! xmas.py -- I'm dreaming of an ASCII christmas
Please send bugfixes and new contributions to me or, even better,
--- 11,19 ----
course.
! ncurses.py -- currently only a panels demo
XXX this won't work until panel support is checked in
! rain.py -- raindrops keep falling on my desktop
! tclock.py -- ASCII clock, by Howard Jones
! xmas.py -- I'm dreaming of an ASCII christmas
Please send bugfixes and new contributions to me or, even better,
***************
*** 25,29 ****
===========
! life.py Simple game of Life
!
!
--- 25,28 ----
===========
! life.py -- Simple game of Life
! repeat.py -- Repeatedly execute a shell command (like watch(1))
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