How to create a bash script with the given full command of pmap?

This is using SuSE 11 with SP4. Recently, I came across an online article discussed about how to use pmap to display the actual mapping, memory in active/cached and so on.
Please see the full command below,

 for i in `ps -eaf | grep “any application process” | grep -v grep | awk '{print $2}'`; do echo -n "PID $i actual memory usage is :" >> totaluse.txt; pmap -d $i | grep -i "writeable/private: " >> totaluse.txt; done

I was ended up with "nothing" when copy and paste the whole command to the terminal. Can I create a bash script? if so, please enlighten how, thanks.
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MichaelBalackSenior System EngineerAsked:
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David FavorLinux/LXD/WordPress/Hosting SavantCommented:
Most likely you're finding no PIDs or the PIDs have already died at time pmap is called.

Try this command, which will work on any running machine.

pmap -d 1

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Now break your script into sections + print debug info...

So... get your PID list + print out all the PIDs + command/args.

Then cycle through your PID list printing every pmap command before running the command.

Basic, incremental debugging, will provide enough data to fix your code.

Tip: Also print out information messages, like PID count + a warning each time pmap runs on a PID + returns no result. Be sure to add additional code to test if PID is still alive, when you get no return data from pmap.
skullnobrainsCommented:
did you replace "any application process" with the name of a runniing process ?
skullnobrainsCommented:
pgrep -af SOMETHING_YOU_NEED_TO_REPLACE | wile read pid rest
do
 echo mapping for $pid $rest
 LC_ALL=en pmap -d $i | grep -i "writeable/private: "
done

if you want to redirect the output, add ">> /path/to/output" at the end

the same will run as a one liner with additionnal ; where needed

if you need to run this for a huge set of processes, you might consider outputting the mapped info and processs name in a single echo and fork or possibly use xargs

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David FavorLinux/LXD/WordPress/Hosting SavantCommented:
Better to just pick a solution and allow this question/comments to persist, as this may help someone down the road.
MichaelBalackSenior System EngineerAuthor Commented:
Thanks for both experts. Your suggestions are helpful.
skullnobrainsCommented:
I'd rather be actually helpful. If you want, i have a script that can gather the real memory usage of each process systemwide based on pmap output.
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