[KLUG Members] gunzip uncompresses file to zero bytes

[bill]

On Wed, 2006-03-08 at 22:37, Adam Tauno Williams wrote:
> >> > I ran 
> >> > gunzip filename
> >> > to a file.  It worked away for a while and when it was done, left me
> >> > with a file of zero bytes.
> >> > What happened?
> >> It didn't display any warning messages?  
> >No, just returned the command prompt.
> 
> Wierd,  run "strace gunzip ...." and look at the tail end of the output.

O.k., running

strace gunzip 

gives me stuff that makes no sense to me, but here is the tail end...

rt_sigaction(SIGINT, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGINT, {0x804cd90, [INT], SA_RESTORER|SA_RESTART,
0x40047cf8}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGTERM, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGTERM, {0x804cd90, [TERM], SA_RESTORER|SA_RESTART,
0x40047cf8}, {SIG_IGN}, 8) = 0
rt_sigaction(SIGHUP, {SIG_IGN}, {SIG_DFL}, 8) = 0
rt_sigaction(SIGHUP, {0x804cd90, [HUP], SA_RESTORER|SA_RESTART,
0x40047cf8}, {SIG_IGN}, 8) = 0
ioctl(0, SNDCTL_TMR_TIMEBASE, {B38400 opost isig icanon echo ...}) = 0
write(2, "gunzip: compressed data not read"..., 81gunzip: compressed
data not read from a terminal. Use -f to force decompression.
) = 81
write(2, "For help, type: gunzip -h\n", 26For help, type: gunzip -h
) = 26
exit_group(1)                           = ?



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