# With my psmisc 22.20:
pstree -p -s PID
也许如果使用 ps -ef:
awk -vPID=$1 '
function getParent ( pid ) {
if (pid == "" || pid == "0") return;
while ("ps -ef | grep "pid | getline) {
if ($2 == pid) {
print $8"("$2") Called By "$3;
getParent($3);
break;
}
}
close ("ps -ef")
}
BEGIN { getParent(PID) }
'
假设 ps 输出列和顺序,这很难看。实际上,单次运行 ps -ef 包含所需的所有信息。这不值得花时间,我仍然建议更新 psmisc,它不会伤害。
编辑:使用单次运行 ps -ef 的模拟:
ps -ef | awk -vPID=$1 '
function getpp ( pid, pcmd, proc ) {
for ( p in pcmd ) {
if (p == pid) {
getpp(proc[p], pcmd, proc);
if (pid != PID) printf("%s(%s)───", pcmd[pid], pid);
}
}
}
NR > 1 {
# pid=>cmd
pcmd[$2] = $8;
# pid=>Parent
pproc[$2] = $3;
}
END {
getpp(PID, pcmd, pproc);
printf "\n";
system("pstree -p "PID);
}'