AIX

when i give the below command in AIX 5.3, it showing error

ps -p 1482944 -eo pcpu,time,s,pid,comm


error:

ps: invalid list with -o.
Usage: ps [-ANPaedfklmMZ] [-n namelist] [-F Format] [-o specifier[=header],...]
[-p proclist][-G|-g grouplist] [-t termlist] [-U|-u userlist] [-c classlist] [ -T pid] [ -L pidlist]
Usage: ps [aceglnsuvwxUX] [t tty] [ProcessNumber]
-------------------------------------------------------------------

how to use the above command in ibm AIX 5.3 .

It told you everything needed to look further
Checking the man page for ps and the possible options for the -o switch, "s" is not listed there. If you remove it from your format list, it works. Maybe choose another from man page.

i have used another command found in AIX 5.3

ps gv 1482944

it gives the below detail,can anyone tell me what it tells about the process, whether it is stopped or waiting or got hanged ?
is there anyway from the below stats can we find about the status of process whether it is stopped or waiting or got hanged ?

PID TTY STAT TIME PGIN SIZE RSS LIM TSIZ TRS %CPU %MEM COMMAND
1482944 - A 8:20 1 40816 40816 32768 70 0 0.1 1.0 java -X

As it is you can find exactly this information (that is: what the columns show) by reading the - quite exhaustive - man page of the AIX ps command.

Lazy he is.... Read he must, then enlightened he will be - young Padawan!

There is one piece of information you might lack and i will provide it here:

Historically there were two Unix flavours: System V and BSD. They differ in a lot of things but one prominent detail where they differ most is the "ps" command. All existing "ps"-commands are either BSD-like or SysV-like (the reason being that the process management of SysV and BSD are fundamentally different and therefore other tools are necessary).

It is easy to tell which sort of "ps" a system features (if you are connecting to a UNIX system of unknown flavour) by simply trying to introduce the options with a dash ("-"). If this works it is a SysV-compatible "ps", if options are not preceeded by a dash it is a BSD-like "ps". Example:

Code:

ps -fe    # SysV-like ps
ps caux   # BSD-like ps

What has this to do with AIX?

Well, AIX, in an effort to be compatible with both worlds, has both versions of "ps" - or rather a "ps" which can act either way. It understands all the BSD-like options (without the dash) and it understands all the SysV-like options (with the dash). This implies, that several options have a double meaning, depending if they are introduced with a dash or not ("ps -u" versus "ps u" for instance).

Ok, the rest is in the man page. I suggest trying to grok it, its an interesting read.

I hope this helps.

bakunin