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Top Forums Shell Programming and Scripting need help ps -e on multiple processes Post 302670159 by methyl on Wednesday 11th of July 2012 06:41:18 PM
Old 07-11-2012
The ps command syntax varies across versions of unix and Linux but I have never seen the syntax posted by @Corona688. The PID value is always prefixed by a p or -p in my experience.

Please post what Operating System and version you are running and what Shell you use.

The easy solution is run ps more than once. No point in running ps -e unless you need to see all the processes. Avoid obvious variable names like $PID and $PPID because they are known to interfere with the operation of some versions of ps .

Code:
# Assuming /home/mydir/output is a directory (not clear in original post)
mylogfile="/home/mydir/output/mylogfile"
touch "${mylogfile}"
# Invented pid's 1000, 2000, 3000
for pid_item in 1000 2000 3000
do
         # Not sure about the -l parameter, so left it out for the moment
         # Might need a "grep -v" to get rid of the headings. Depends on expected output (not posted). 
         ps -fp ${pid_item} >> "${mylogfile}"
done


Some versions of ps will accpt syntax like:
Code:
ps -fp "1000,2000,3000"

Depends what ps you have and what Operating System and version.


Ps. Syntax like ps -ef|egrep "1000|2000|3000" is prone to false hits and can overload the kernel and give you false negatives (seen many times ... before someone posts a contra).

Last edited by methyl; 07-11-2012 at 08:07 PM.. Reason: dynamic post
 

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ncftpls(1)						      General Commands Manual							ncftpls(1)

NAME
ncftpls - Internet file transfer program for scripts SYNOPSIS
ncftpls [options] ftp://url.style/host/path/name/ OPTIONS
Command line flags: -1 Most basic format, one item per line. -l Long list format. -R Long list format, recurse subdirectories. Equivalent to "-x -lR". -x -XX Additional ls flags to pass on to the server. -u XX Use username XX instead of anonymous. -p XX Use password XX with the username. -P XX Use port number XX instead of the default FTP service port (21). -d XX Use the file XX for debug logging. -t XX Timeout after XX seconds. -E Use regular (PORT) data connections. -F Use passive (PASV) data connections. The default is to use passive, but to fallback to regular if the passive connection fails or times out. -r XX Redial a maximum of XX times until connected to the remote FTP server. -W XX Send raw FTP command XX after logging in. -X XX Send raw FTP command XX after each file transferred. -Y XX Send raw FTP command XX before logging out. The -W, -X, and -Y options are useful for advanced users who need to tweak behavior on some servers. For example, users accessing mainframes might need to send some special SITE commands to set blocksize and record format information. For these options, you can use them multiple times each if you need to send multiple commands. For the -X option, you can use the cookie %s to expand into the name of the file that was transferred. DESCRIPTION
The purpose of ncftpls is to do remote directory listings using the File Transfer Protocol without entering an interactive shell. This lets you write shell scripts or other unattended processes that can do FTP. The default behavior is to print the directory listing in columnized format (i.e. ls -CF), but that is not very useful for scripting. This example uses the -1 flag, to print one file per line: $ ncftpls -1 ftp://ftp.ncftp.com/pub/ncftp/ You can also do a remote "ls -l", by using "ncftpls -l". If you want to try other flags, you have to use them with the -x flag. For exam- ple, if you wanted to do a remote "ls -lrt", you could do this: $ ncftpls -x "-lrt" ftp://ftp.ncftp.com/pub/ncftp/ By default the program tries to open the remote host and login anonymously, but you can specify a username and password information like you can with ncftpget or ncftpput. DIAGNOSTICS
ncftpls returns the following exit values: 0 Success. 1 Could not connect to remote host. 2 Could not connect to remote host - timed out. 3 Transfer failed. 4 Transfer failed - timed out. 5 Directory change failed. 6 Directory change failed - timed out. 7 Malformed URL. 8 Usage error. 9 Error in login configuration file. 10 Library initialization failed. 11 Session initialization failed. AUTHOR
Mike Gleason, NcFTP Software (mgleason@ncftp.com). SEE ALSO
ncftpput(1), ncftpget(1), ncftp(1), ftp(1), rcp(1), tftp(1). LibNcFTP (http://www.ncftp.com/libncftp/). ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +--------------------+-----------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +--------------------+-----------------+ |Availability | SUNWncftp | +--------------------+-----------------+ |Interface Stability | Volatile | +--------------------+-----------------+ NOTES
Source for ncftp is available on http://opensolaris.org. Software NcFTP ncftpls(1)
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