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Shell Programming and Scripting

How to time stamp executed commands?

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# 1  
Old 10-21-2013
How to time stamp executed commands?
Hi guys,
I am executing a pretty long ksh script and need to time stamp every command which runs inside.
Unfortunatly 'echo date' is not the option here.
May be someone knows another way or utility which can be used to log executed command and timestamp next to it.
Thanks
PS I work in ksh88
# 2  
Old 10-21-2013
What are you trying to accomplish - displaying time is not anything like a usual requirement. Besides you will need a really fine grained timer to do this. Many commands in ksh shell are builtins and run with very little elapsed time.

In other words what is the purpose of timing each command? Performance analysis? See if
Code:
set -x

- as the first line of code, doesn't help you.
# 3  
Old 10-21-2013
You can enable the command accounting tool. Not sure what OS you're using, but the package is usually named psacct.

Once enabled, you can display information for any running script and/or prog and all the commands associated with it:

Code:
cat myscript.sh
#!/bin/bash
date
uptime

./myscript.sh
Mon Oct 21 09:14:54 EDT 2013
 09:14:54 up 2 days, 21:52,  8 users,  load average: 0.04, 0.17, 0.13

lastcomm --user <username that ran the script> | more
myscript.sh          username pts/1      0.00 secs Mon Oct 21 09:14
uptime                username pts/1      0.00 secs Mon Oct 21 09:14
date                   username pts/1      0.00 secs Mon Oct 21 09:14

To enable it if not already installed, install the psacct package. Once installed follow the below steps using sudo or as root:

Code:
1.  Create the empty accouting file:

    touch /var/log/pacct

2.  Run the accton command to turn on accounting:

    accton on
    Turning on process accounting, file set to the default '/var/log/pacct'.

3.  Use the lastcomm command to view recently run commands:

    By user:
    lastcomm --user <username>

    By command:
    lastcomm --command <command>

    List everything:
    lastcomm

# 4  
Old 10-21-2013
Not sure if this will work in ksh88. I tried it in recent bash:
Code:
export PS4=" \t "
set -x
./test
  21:53:55 (( i=1 ))
  21:53:55 (( i<=10 ))
  21:53:55 sleep 1
  21:53:56 echo X
X
  21:53:56 (( i++ ))
  21:53:56 (( i<=10 ))
  21:53:56 sleep 1
  21:53:57 echo X

etc.
# 5  
Old 10-29-2013
Thanks a lot, guys...
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