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L1nuxn00b703

06-05-2012 12:03 AM

time + wget = file

Hi all,
I have the following command I'm trying to capture to a file but I'm unable to:

Code:

time wget -O /dev/null www.example.com

Is there a way to capture the time and wget output to a file?

pan64

06-05-2012 03:04 AM

why do you use -O /dev/null?

TobiSGD

06-05-2012 07:10 AM

Actually you are downloading a file, but with the -O /dev/null parameter you are directly sending it into non-existence. Have a look at

Code:

man wget

for information on the options of wget.

rizzy

06-05-2012 07:33 AM

Code:

wget smxi.org/smxi.zip -o test.txt && cat test.txt

Code:

--2012-06-05 13:30:36--  http://smxi.org/smxi.zip

Resolving smxi.org (smxi.org)... 209.197.72.47

Connecting to smxi.org (smxi.org)|209.197.72.47|:80... connected.

HTTP request sent, awaiting response... 302 Moved Temporarily

Location: http://smxi.org/sm/smxi.zip [following]

--2012-06-05 13:30:37--  http://smxi.org/sm/smxi.zip

Reusing existing connection to smxi.org:80.

HTTP request sent, awaiting response... 200 OK

Length: 166561 (163K) [application/zip]

Saving to: `smxi.zip'



    0K .......... .......... .......... .......... .......... 30%  120K 1s

    50K .......... .......... .......... .......... .......... 61%  268K 0s

  100K .......... .......... .......... .......... .......... 92%  300K 0s

  150K .......... ..                                        100%  448K=0.8s



2012-06-05 13:30:38 (203 KB/s) - `smxi.zip' saved [166561/166561]

David the H.

06-05-2012 02:59 PM

time and the base output of wget both print to stderr. If you want to capture the printed output of the exact command above, use this:

Code:

time { wget -O /dev/null www.example.com ;} 2> outfile.txt

http://wiki.bash-hackers.org/syntax/redirection

The {...;} brackets are for command grouping. Maybe not necessary in this case, but I think it's better to always clearly frame whatever the time command is supposed to measure. It also allows you to set up separate redirections for both the inside and outside commands, if you want. You can also use (..) subshell grouping.

L1nuxn00b703

06-05-2012 11:27 PM

Ahhh thx guyz!!!

@David the H. I tried your suggestion but it doesn't log the time portion:

Code:

# time { wget -O /dev/null www.example.com ;} 2> outputfile



real    0m0.283s

user    0m0.001s

sys    0m0.004s



# more outfile.txt

--2012-06-06 00:26:21--  http://www.example.com/

Resolving www.example.com... 192.0.43.10, 2001:500:88:200::10

Connecting to www.example.com|192.0.43.10|:80... connected.

HTTP request sent, awaiting response... 302 Found

Location: http://www.iana.org/domains/example/ [following]

--2012-06-06 00:26:21--  http://www.iana.org/domains/example/

Resolving www.iana.org... 192.0.32.8, 2620:0:2d0:200::8

Connecting to www.iana.org|192.0.32.8|:80... connected.

HTTP request sent, awaiting response... 200 OK

Length: unspecified [text/html]

Saving to: `/dev/null'



    0K ..                                                      157M=0s



2012-06-06 00:26:21 (157 MB/s) - `/dev/null' saved [2966]

I'm trying to add both time and the stderr of wget to a file

bsat	06-06-2012 04:43 AM

The time command also has a -o option with which you can print the output to a file.
But don't use the bash inbuilt time as this does not have the logging option, instead use "/usr/bin/time".

David the H.

06-06-2012 10:36 AM

Hmm, that's odd. I could've sworn it was working when I tested it yesterday, but you're right. For some reason I can't quite fathom the curly-bracket command grouping isn't saving them both. The redirection is only being applied to the grouping.

But it does save them both when I use a subshell instead.

Code:

time ( wget -O /dev/null www.example.com ) 2> outputfile

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