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sumeet inani 07-03-2009 09:43 AM
append command output to file by giving command in terminal
 
Hi,I am using openSUSE 10.3.
When I install software from tarball then to record time required I send output of date to beg.txt(when installation begins) and end.txt (when installation finishes).
How can I append output of date to a file so I don't need two files?

geek.ksa 07-03-2009 10:25 AM
ummm I would do that with a small script. The tar command will be invoked from within the script. Let's the tar command arguments are passed to the script in $1 and tarball in $2
so

#!/bin/ksh
date > log.txt
tar $1 $2
date >> log.txt


do man tar, you could find something better

mericet 07-03-2009 10:33 AM
The output of any command can be redirected from standard output to a file using > or >>
example
$ ls > listings.txt write directory listing into a new file called listing.txt
$ date >> log.txt append the current date/time to the file log.txt

note that > creates a new file, >> appends to an existing one.

veerain 07-03-2009 10:34 AM
You can pretty well use time command also to estimate the time.
time command
It will show time it takes to completing the command.

nuwen52 07-03-2009 10:36 AM
Code:
echo "start time: `date`" > /tmp/time.txt
<do stuff>
echo "end time: `date`" >> /tmp/time.txt
The quotes around date are backquotes, not the normal quotes. The ">>"means append.


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