SKILL function to output the result from lmstat command

 Hi tyanata,

why do you grep for that complicated expression, already grepping for "Users"
will give just one line of output.

i just tried

lmcmd="$CDSHOME/tools/bin/lmstat -c 5280@... -f Virtuoso_Multi_mode_Simulation | grep Users"
cid=ipcBeginProcess(lmcmd)
ipcReadProcess(cid)

and it works fine...

kind regards, have a nice weekend

Stefan

The quotes are messing the command up. Try using single quotes instead. Probably wise using ipcWait() instead of ipcWaitForProcess(), so you know it has finished, rather than ready to communicate:

 procedure(Lmstat_out()

    lmstat_com_1 = strcat( "$CDSHOME/tools/bin/lmstat -c 5280@myhost -f Virtuoso_Multi_mode_Simulation | grep 'Users of Virtuoso_Multi_mode_Simulation:'" )
    cid=ipcBeginProcess( lmstat_com_1 )
    ipcWait(cid)
    ipcReadProcess(cid)
)

This seems to work...

Regards,

Andrew.

 Thanks a lot to both of you.

In fact and both proposed solutions solved my problem.

Hi Andrew,

I have a similar requirement as mentioned by tyanata. The only difference is that I want to store the output of lmstat command in a file for further processing. Following is the code snippet that I wrote :

wa_path=geGetShellEnvVar("workarea")     ; Variable workarea is defined in .cshrc to my workarea path
cmdStr=strcat("lmstat -s | tee " wa_path "/licenseLog.txt")
cid=ipcBeginProcess(cmdStr)
ipcWait(cid)

Once, I execute these lines, I get an empty file "licenseLog.txt" in my workarea. If I execute the "lmstat -s | tee licenseLog.txt" in terminal, it works like a breeze. I tried implementing this with the redirection operator as well but no luck. The same command in terminal works!

cmdStr=strcat("lmstat -s > " wa_path "/licenseLog.txt")

Can you please tell me what could be the potential issue with the script. Is it with the use of IPC commands?

Regards,
Jay

Jay,

This isn't really related to the original post - you don't have any quotes in your command, so that wouldn't be it. I'm assuming you don't have any strange characters or spaces in your directory path (i.e. whatever the $workarea env var contains)? Yes, the original post was doing an ipcBeginProcess of an lmstat command, but the issue wasn't anything to do with that part at all.

Note that your code works for me (although my "lmstat -s was returning an error because I didn't have $LM_LICENSE_FILE set); I did have to change the geGetShellEnvVar to be getShellEnvVar because geGetShellEnvVar is the wrong function name (it would just fail, so I'm assuming it's nothing as obvious as that).

Personally I'd have used the redirect rather than a tee. Since you're not reading the output of the IPC command (using ipcReadProcess), you're generating a buffer of data that might just be holding something up - not sure which IC subversion you're using. It's better to just redirect to a file rather than keeping the output as normal (which is what the tee does). You can see this that if you change the "lmstat -s" to an "lmstat -a" then you can do repeated ipcReadProcess(cid) calls and keep getting chunks of data - it's possible that buffer might fill up causing the command to block. I'm not sure that's really your issue here though.

Regards,

Andrew.

Andrew,

Thanks for the quick reply. I am using ICAVD12.2-64b.78 and sorry for the typo for function getShellEnvVar.

It's strange to notice that the implementation using "tee" as well as "redirection operator" is working for you. Although I will be using "lmstat -a" for few of my requirements, I think it would not be a good idea to implement it using ipcReadProcess(cid) calls as the data buffer generated from this will be quite large, that's why I wanted to dump the output to a file.

I tried implementing this by calling a perl script through IPC. Perl script consists of a "system" function which executes the same 'tee' or the 'redirect' operator. Still it is not working.

Regards,
Jay Bharti

Jay,

My point about using tee is that you're then producing a load of standard output which you're not consuming, potentially filling up the input buffer back to virtuoso. So I wouldn't do that if you just want a file. You could use

cid=ipcBatchProcess("lmstat -s" "" "./licenseLog.txt")
ipcWait(cid)

Given that this is failing for perl too, I wonder whether the executable is failing with an error - perhaps your command could be:

my $serverStatusCmd="lmstat -s > ".$pwd."/licenseLog.txt"." 2>&1"

This would redirect any stderr to the file too - might give a clue as to why it's failing. Either way, doesn't sound like it's a Cadence issue - since you're using a non-Cadence executable (lmstat is from Flexera) and you're invoking it from perl...

Andrew.

Hi Andrew,

I tried with the command ipcBatchProcess.

cid=ipcBatchProcess("lmstat -a" "" "licenseLog.txt")
ipcWait(cid)

Now, I get one line error message stored in the file as :

sh : <path_to_installation_dir>/icadv/12.2/tools/bin/lmstat: /lib/ld-lsb.so.3: bad ELF interpreter : No such file or directory

Is this something related to OS configurations?

Regards,
Jay Bharti