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#! /usr/local/python
# Print the product of age and size of each file, in suitable units.
#
# Usage: byteyears [ -a | -m | -c ] file ...
#
# Options -[amc] select atime, mtime (default) or ctime as age.
import sys, posix, time
import string
from stat import *
# Use lstat() to stat files if it exists, else stat()
try:
statfunc = posix.lstat
except NameError:
statfunc = posix.stat
# Parse options
if sys.argv[1] = '-m':
itime = ST_MTIME
del sys.argv[1]
elif sys.argv[1] = '-c':
itime = ST_CTIME
del sys.argv[1]
elif sys.argv[1] = '-a':
itime = ST_CTIME
del sys.argv[1]
else:
itime = ST_MTIME
secs_per_year = 365.0 * 24.0 * 3600.0 # Scale factor
now = time.time() # Current time, for age computations
status = 0 # Exit status, set to 1 on errors
# Compute max file name length
maxlen = 1
for file in sys.argv[1:]:
if len(file) > maxlen: maxlen = len(file)
# Process each argument in turn
for file in sys.argv[1:]:
try:
st = statfunc(file)
except posix.error, msg:
sys.stderr.write('can\'t stat ' + `file` + ': ' + `msg` + '\n')
status = 1
st = ()
if st:
anytime = st[itime]
size = st[ST_SIZE]
age = now - anytime
byteyears = float(size) * float(age) / secs_per_year
print string.ljust(file, maxlen),
print string.rjust(`int(byteyears)`, 8)
sys.exit(status)
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