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#!/usr/bin/env python
"""This spawns a sub-shell (bash) and gives the user interactive control. The
entire shell session is logged to a file called script.log. This behaves much
like the classic BSD command 'script'.
./script.py [-a] [-c command] {logfilename}
logfilename : This is the name of the log file. Default is script.log.
-a : Append to log file. Default is to overwrite log file.
-c : spawn command. Default is to spawn the sh shell.
Example:
This will start a bash shell and append to the log named my_session.log:
./script.py -a -c bash my_session.log
PEXPECT LICENSE
This license is approved by the OSI and FSF as GPL-compatible.
http://opensource.org/licenses/isc-license.txt
Copyright (c) 2012, Noah Spurrier <noah@noah.org>
PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY
PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE
COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
"""
import os, sys, time, getopt
import signal, fcntl, termios, struct
import traceback
import pexpect
global_pexpect_instance = None # Used by signal handler
def exit_with_usage():
print globals()['__doc__']
os._exit(1)
def main():
######################################################################
# Parse the options, arguments, get ready, etc.
######################################################################
try:
optlist, args = getopt.getopt(sys.argv[1:], 'h?ac:', ['help','h','?'])
except Exception, e:
print str(e)
exit_with_usage()
options = dict(optlist)
if len(args) > 1:
exit_with_usage()
if [elem for elem in options if elem in ['-h','--h','-?','--?','--help']]:
print "Help:"
exit_with_usage()
if len(args) == 1:
script_filename = args[0]
else:
script_filename = "script.log"
if '-a' in options:
fout = file (script_filename, "ab")
else:
fout = file (script_filename, "wb")
if '-c' in options:
command = options['-c']
else:
command = "sh"
# Begin log with date/time in the form CCCCyymm.hhmmss
fout.write ('# %4d%02d%02d.%02d%02d%02d \n' % time.localtime()[:-3])
######################################################################
# Start the interactive session
######################################################################
p = pexpect.spawn(command)
p.logfile = fout
global global_pexpect_instance
global_pexpect_instance = p
signal.signal(signal.SIGWINCH, sigwinch_passthrough)
print "Script recording started. Type ^] (ASCII 29) to escape from the script shell."
p.interact(chr(29))
fout.close()
return 0
def sigwinch_passthrough (sig, data):
# Check for buggy platforms (see pexpect.setwinsize()).
if 'TIOCGWINSZ' in dir(termios):
TIOCGWINSZ = termios.TIOCGWINSZ
else:
TIOCGWINSZ = 1074295912 # assume
s = struct.pack ("HHHH", 0, 0, 0, 0)
a = struct.unpack ('HHHH', fcntl.ioctl(sys.stdout.fileno(), TIOCGWINSZ , s))
global global_pexpect_instance
global_pexpect_instance.setwinsize(a[0],a[1])
if __name__ == "__main__":
try:
main()
except SystemExit, e:
raise e
except Exception, e:
print "ERROR"
print str(e)
traceback.print_exc()
os._exit(1)
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