shell script

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1

Hi All

Have to write a shell script for the follwing tasks:

  1. Have to redirect three cmd outputs in three different files
    ex: sar -u 1 10 >date.sar.txt
    vmstat 1 10 >date.vmstat.txt
    iostat 1 10 >date.iostat.txt

    where date should be current system date as the output file name

Any help will be highly appreciated

Thanks

2

try this,

output of date would be used as such

cmd >  file."`date`".txt
3

Try this..,


Currentdate=`date +%Y%d%m`
echo $Currentdate

sar -u 1 10 > $Currentdate.sar.txt
vmstat 1 10 > $Currentdate.vmstat.txt
iostat 1 10 > $Currentdate.iostat.txt
4

or try this:

Currentdate=`date +%Y%d%m`
T="txt"
sar -u 1 10 > $Currentdate.sar.$T
vmstat 1 10 > $Currentdate.vmstat.$T
iostat 1 10 > $Currentdate.iostat.$T

5

Thank you guys for your help.

fish007, i tried your script which works fine. But i forgot to mention that i need the output of the 3 cmds of same time using the script not sequencial.

Thanks again

6

I still could not figure out how to run following 3 cmds parallel to take output of same time

sar -u 1 10 > $Currentdate.sar.txt
vmstat 1 10 > $Currentdate.vmstat.txt
iostat 1 10 > $Currentdate.iostat.txt

Can anyone help?

7

In that case, a common filename as mentioned in the previous post should be used

and that should be visible to the other 2 process as well.

if the process' are run in parallel and not as sequential process, you might encounter that the ouput of the 3 process just flush in in to the file and might be garbled, which needs to be parsed and refactored later.