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x-yuri/show process subtree.sh

Last active March 28, 2020 14:26
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show process subtree.sh
#!/bin/sh
set -eu
pids=$(ps -eHo pid,ppid \
| awk -vpid="$1" '
BEGIN { pids[pid] }
$1 in pids || $2 in pids {
print $1
pids[$1]
}
')
ps -Ho pid,ppid,comm,args $pids
# ps -Ho pid,ppid,comm,args $(ps -eHo pid,ppid | awk -vpid="$1" 'BEGIN { pids[pid] } $1 in pids || $2 in pids {print $1; pids[$1]}')
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