pid

#!/bin/bash
##############################################################################
#
# NAME:         pid
#
# DESCRIPTION:  Show all the processes owned by me that match certain name
#               criteria.
#
# USAGE:        pid [-n] [PATTERN]
#               -n      Does not show the ps header
#               PATTERN A pattern to match the process names. If no pattern
#                       is specified, all user's processes are shown.
#
# DEPENDENCIES: None 
#
##############################################################################
#

#-----------------------------------------------------------------------------
usage()
{
    sed -e 's/^    //' <<'USAGE'
    Usage:

    pid [-n] [PATTERN]

      -n      Does not show the ps header
      PATTERN A pattern to match the process names. If no pattern
              is specified, all user's processes are shown.

USAGE
    exit $1
}
#-----------------------------------------------------------------------------


# Only asking for help
[[ $1 = '-h' ]] && usage 0

# Headers or not?
if [[ $1 = -n ]]; then
    showheader=0
    shift
else
    showheader=1
fi


# The meat!
ps aux -u $USER -U $USER | awk \
            -v proc="$1" \
            -v showheader="$showheader" \
            -v shell_pid="$$" \
            '
    {
        /* If header is requested, save it just in case */
        if (showheader == 1 && NR == 1)
        {
            header = $0;
        }
        awk_pid =  PROCINFO["pid"];
        if ( ($0 ~ proc) && ($2 != awk_pid) && ($2 != shell_pid) )
        {
            if (showheader == 1)
            {
                showheader = 0;
                print header;
            }
            print $0;
        }
    }'

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