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Top Forums UNIX for Beginners Questions & Answers Cannot kill many processes whose ppid is 1 Post 303045903 by jim mcnamara on Friday 17th of April 2020 03:29:59 PM
Old 04-17-2020
D is a device wait. I don't remember old SunOS having one, but OK, no problem, the result is the same - device not available or not online, etc. Both "real" and virtual I/O devices can cause this. If it happens again, the sysadmin is going to have to find the problem device first, in order to be able to consider remediation. A wild guess: network issues since this is a web app.

Are there any NFS mounts? That can be a source of interesting effects as well when abused.
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PKILL(1)						    BSD General Commands Manual 						  PKILL(1)

pgrep, pkill -- find or signal processes by name SYNOPSIS
pgrep [-Lafilnoqvx] [-F pidfile] [-G gid] [-P ppid] [-U uid] [-d delim] [-g pgrp] [-t tty] [-u euid] pattern ... pkill [-signal] [-ILafilnovx] [-F pidfile] [-G gid] [-P ppid] [-U uid] [-g pgrp] [-t tty] [-u euid] pattern ... DESCRIPTION
The pgrep command searches the process table on the running system and prints the process IDs of all processes that match the criteria given on the command line. The pkill command searches the process table on the running system and signals all processes that match the criteria given on the command line. The following options are available: -F pidfile Restrict matches to a process whose PID is stored in the pidfile file. -G gid Restrict matches to processes with a real group ID in the comma-separated list gid. -I Request confirmation before attempting to signal each process. -L The pidfile file given for the -F option must be locked with the flock(2) syscall or created with pidfile(3). -P ppid Restrict matches to processes with a parent process ID in the comma-separated list ppid. -U uid Restrict matches to processes with a real user ID in the comma-separated list uid. -d delim Specify a delimiter to be printed between each process ID. The default is a newline. This option can only be used with the pgrep command. -a Include process ancestors in the match list. By default, the current pgrep or pkill process and all of its ancestors are excluded (unless -v is used). -f Match against full argument lists. The default is to match against process names. -g pgrp Restrict matches to processes with a process group ID in the comma-separated list pgrp. The value zero is taken to mean the process group ID of the running pgrep or pkill command. -i Ignore case distinctions in both the process table and the supplied pattern. -l Long output. For pgrep, print the process name in addition to the process ID for each matching process. If used in conjunction with -f, print the process ID and the full argument list for each matching process. For pkill, display the kill command used for each process killed. -n Select only the newest (most recently started) of the matching processes. -o Select only the oldest (least recently started) of the matching processes. -q Do not write anything to standard output. -t tty Restrict matches to processes associated with a terminal in the comma-separated list tty. Terminal names may be of the form ttyxx or the shortened form xx. A single dash ('-') matches processes not associated with a terminal. -u euid Restrict matches to processes with an effective user ID in the comma-separated list euid. -v Reverse the sense of the matching; display processes that do not match the given criteria. -x Require an exact match of the process name, or argument list if -f is given. The default is to match any substring. -signal A non-negative decimal number or symbolic signal name specifying the signal to be sent instead of the default TERM. This option is valid only when given as the first argument to pkill. If any pattern operands are specified, they are used as regular expressions to match the command name or full argument list of each process. Note that a running pgrep or pkill process will never consider itself as a potential match. EXIT STATUS
The pgrep and pkill utilities return one of the following values upon exit: 0 One or more processes were matched. 1 No processes were matched. 2 Invalid options were specified on the command line. 3 An internal error occurred. SEE ALSO
kill(1), killall(1), ps(1), flock(2), kill(2), sigaction(2), pidfile(3), re_format(7) HISTORY
The pkill and pgrep utilities first appeared in NetBSD 1.6. They are modelled after utilities of the same name that appeared in Sun Solaris 7. They made their first appearance in FreeBSD 5.3. AUTHORS
Andrew Doran <ad@NetBSD.org> BSD
February 11, 2010 BSD

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