Eu quero obter o PPID do navegador Chromium. Quando eu inicio o chromium-browser , ele lança muitos processos filhos com o mesmo nome.
Por exemplo:
$ pidof /usr/lib/chromium-browser/chromium-browser
8963 8888 8710 7255 7074 6546 6540 6536 6532 6528 6524 6520 6516 6512 6506 6379 6357 6282 6258 6167 4977 2452
Se eu tentar obter PPID de processos filhos como:
$ echo $(ps -o ppid= -p $(pidof -s /usr/lib/chromium-browser/chromium-browser))
6282
Imprime o PPID do navegador chromium, mas não é o PID mais alto de chromium-browser de acordo com pstree :
├─chromium-browse(6167)─┬─chromium-browse(6258)───chromium-browse(6282)─┬─chromium-browse(2452)─┬─{chromium-browse}(2460)
│ │ │ ├─{chromium-browse}(2461)
│ │ │ ├─{chromium-browse}(2467)
│ │ │ ├─{chromium-browse}(2527)
│ │ │ ├─{chromium-browse}(2574)
│ │ │ ├─{chromium-browse}(2918)
│ │ │ ├─{chromium-browse}(3711)
│ │ │ └─{chromium-browse}(3984)
│ │ ├─chromium-browse(4977)─┬─{chromium-browse}(4996)
│ │ │ ├─{chromium-browse}(5015)
│ │ │ ├─{chromium-browse}(5016)
│ │ │ ├─{chromium-browse}(5087)
│ │ │ ├─{chromium-browse}(5170)
│ │ │ ├─{chromium-browse}(5358)
│ │ │ ├─{chromium-browse}(831)
│ │ │ └─{chromium-browse}(832)
│ │ ├─chromium-browse(6506)─┬─{chromium-browse}(6509)
│ │ │ ├─{chromium-browse}(6607)
│ │ │ ├─{chromium-browse}(6616)
│ │ │ ├─{chromium-browse}(6636)
│ │ │ ├─{chromium-browse}(6754)
│ │ │ ├─{chromium-browse}(6849)
│ │ │ ├─{chromium-browse}(7045)
│ │ │ ├─{chromium-browse}(5651)
│ │ │ └─{chromium-browse}(5652)
│ │ ├─chromium-browse(6512)─┬─{chromium-browse}(6515)
│ │ │ ├─{chromium-browse}(6595)
│ │ │ ├─{chromium-browse}(6613)
│ │ │ ├─{chromium-browse}(6637)
│ │ │ └─{chromium-browse}(6753)
│ │ ├─chromium-browse(6516)─┬─{chromium-browse}(6519)
│ │ │ ├─{chromium-browse}(6602)
│ │ │ ├─{chromium-browse}(6612)
│ │ │ ├─{chromium-browse}(6632)
│ │ │ ├─{chromium-browse}(6761)
│ │ │ ├─{chromium-browse}(2492)
│ │ │ └─{chromium-browse}(6378)
│ │ ├─chromium-browse(6520)─┬─{chromium-browse}(6522)
│ │ │ ├─{chromium-browse}(6600)
│ │ │ ├─{chromium-browse}(6623)
│ │ │ ├─{chromium-browse}(6629)
│ │ │ └─{chromium-browse}(6752)
│ │ ├─chromium-browse(6524)─┬─{chromium-browse}(6527)
│ │ │ ├─{chromium-browse}(6596)
│ │ │ ├─{chromium-browse}(6617)
│ │ │ ├─{chromium-browse}(6638)
│ │ │ └─{chromium-browse}(6766)
│ │ ├─chromium-browse(6528)─┬─{chromium-browse}(6531)
│ │ │ ├─{chromium-browse}(6605)
│ │ │ ├─{chromium-browse}(6622)
│ │ │ ├─{chromium-browse}(6639)
│ │ │ ├─{chromium-browse}(6758)
│ │ │ └─{chromium-browse}(6353)
│ │ ├─chromium-browse(6532)─┬─{chromium-browse}(6534)
│ │ │ ├─{chromium-browse}(6598)
│ │ │ ├─{chromium-browse}(6618)
│ │ │ ├─{chromium-browse}(6642)
│ │ │ ├─{chromium-browse}(6756)
│ │ │ └─{chromium-browse}(6788)
│ │ ├─chromium-browse(6536)─┬─{chromium-browse}(6539)
│ │ │ ├─{chromium-browse}(6599)
│ │ │ ├─{chromium-browse}(6615)
│ │ │ ├─{chromium-browse}(6630)
│ │ │ ├─{chromium-browse}(6751)
│ │ │ ├─{chromium-browse}(6449)
│ │ │ └─{chromium-browse}(6450)
│ │ ├─chromium-browse(6540)─┬─{chromium-browse}(6545)
│ │ │ ├─{chromium-browse}(6601)
│ │ │ ├─{chromium-browse}(6619)
│ │ │ ├─{chromium-browse}(6641)
│ │ │ └─{chromium-browse}(6760)
│ │ ├─chromium-browse(6546)─┬─{chromium-browse}(6549)
│ │ │ ├─{chromium-browse}(6606)
│ │ │ ├─{chromium-browse}(6614)
│ │ │ ├─{chromium-browse}(6631)
│ │ │ └─{chromium-browse}(6759)
│ │ ├─chromium-browse(7074)─┬─{chromium-browse}(7079)
│ │ │ ├─{chromium-browse}(7081)
│ │ │ ├─{chromium-browse}(7082)
│ │ │ ├─{chromium-browse}(7099)
│ │ │ ├─{chromium-browse}(7100)
│ │ │ ├─{chromium-browse}(7103)
│ │ │ └─{chromium-browse}(7109)
│ │ ├─chromium-browse(7255)─┬─{chromium-browse}(7257)
│ │ │ ├─{chromium-browse}(7259)
│ │ │ ├─{chromium-browse}(7260)
│ │ │ ├─{chromium-browse}(7264)
│ │ │ ├─{chromium-browse}(7265)
│ │ │ ├─{chromium-browse}(7268)
│ │ │ └─{chromium-browse}(7270)
│ │ ├─chromium-browse(8710)─┬─{chromium-browse}(8713)
│ │ │ ├─{chromium-browse}(8714)
│ │ │ ├─{chromium-browse}(8715)
│ │ │ ├─{chromium-browse}(8718)
│ │ │ ├─{chromium-browse}(8719)
│ │ │ ├─{chromium-browse}(8850)
│ │ │ ├─{chromium-browse}(17470)
│ │ │ ├─{chromium-browse}(19250)
│ │ │ └─{chromium-browse}(23721)
│ │ ├─chromium-browse(8888)─┬─{chromium-browse}(8891)
│ │ │ ├─{chromium-browse}(8894)
│ │ │ ├─{chromium-browse}(8895)
│ │ │ ├─{chromium-browse}(8899)
│ │ │ ├─{chromium-browse}(8902)
│ │ │ ├─{chromium-browse}(8911)
│ │ │ ├─{chromium-browse}(9469)
│ │ │ └─{chromium-browse}(9471)
│ │ └─chromium-browse(8963)─┬─{chromium-browse}(8968)
│ │ ├─{chromium-browse}(8969)
│ │ ├─{chromium-browse}(8970)
│ │ ├─{chromium-browse}(8971)
│ │ ├─{chromium-browse}(8977)
│ │ └─{chromium-browse}(8989)
│ ├─chromium-browse(6357)─┬─chromium-browse(6379)
│ │ ├─{chromium-browse}(6380)
│ │ ├─{chromium-browse}(6381)
│ │ └─{chromium-browse}(6382)
│ ├─{chromium-browse}(6255)
│ ├─{chromium-browse}(6283)
│ ├─{chromium-browse}(6284)
│ ├─{chromium-browse}(6285)
│ ├─{chromium-browse}(6288)
│ ├─{chromium-browse}(6289)
│ ├─{chromium-browse}(6290)
│ ├─{chromium-browse}(6291)
│ ├─{chromium-browse}(6292)
│ ├─{chromium-browse}(6293)
│ ├─{chromium-browse}(6310)
│ ├─{chromium-browse}(6311)
│ ├─{chromium-browse}(6312)
│ ├─{chromium-browse}(6313)
│ ├─{chromium-browse}(6314)
│ ├─{chromium-browse}(6315)
│ ├─{chromium-browse}(6316)
│ ├─{chromium-browse}(6317)
│ ├─{chromium-browse}(6318)
│ ├─{chromium-browse}(6319)
│ ├─{chromium-browse}(6320)
│ ├─{chromium-browse}(6323)
│ ├─{chromium-browse}(6351)
│ ├─{chromium-browse}(6355)
│ ├─{chromium-browse}(6356)
│ ├─{chromium-browse}(6375)
│ ├─{chromium-browse}(6385)
│ ├─{chromium-browse}(6386)
│ ├─{chromium-browse}(6455)
│ ├─{chromium-browse}(6505)
│ ├─{chromium-browse}(6708)
│ ├─{chromium-browse}(6781)
│ ├─{chromium-browse}(6783)
│ ├─{chromium-browse}(7075)
│ ├─{chromium-browse}(7076)
│ ├─{chromium-browse}(9053)
│ └─{chromium-browse}(9089)
Como é possível obter o primeiro PID de ramificação do navegador de cromo ( ├─chromium-browse(6167)─ )?
Se você estiver procurando pelo processo de cromo de nível superior, pode ser o único com o ID de processo pai 1 (init), tente usar pgrep -P1 chromium para encontrar seu PID.
Você pode tentar usar ps ef para ver os processos listados em uma estrutura de árvore para localizar um pai. Nota: ps switches são ef e não -ef .
Você poderia tentar com pgrep :
pgrep -o chromium
O sinalizador -o imprimirá apenas o mais antigo (iniciado menos recentemente) dos processos correspondentes. Se todas as suas instâncias de cromo forem processos filho desse processo pai com pid 6167 , esse deve ser o processo chromium-browser mais antigo, portanto, pgrep -o deve imprimir esse pid.
Testado com uma instância do apache:
$ pstree -p
init(1)-+-acpid(1296)
|-apache2(1312)-+-apache2(29259)
| |-apache2(29260)-+-{apache2}(29262)
| | |-{apache2}(29263)
[...]
| '-apache2(29354)-+-{apache2}(29356)
| |-{apache2}(29357)
[...]
$ pgrep -o apache2
1312
pgrep é o caminho a percorrer; Eu escrevi isso principalmente como um exercício bash , mas no caso de ser útil para qualquer outra pessoa:
Ele configura uma função que aceita um parâmetro - um nome de processo que, presumivelmente, corresponde a algo na saída ps -eo comm . Ele lê a saída ps , configurando uma matriz de pids e pids pai para processos correspondentes. Feito isso, ele percorre os pids correspondentes para encontrar o que tem um pid pai que não era na lista / matriz original.
# searches the 'ps' listing for matching ($1) processes,
# then displays the "ancestor" PID -- the process that has a parent PID
# that has a different process name
function ancestor () {
# must pass a parameter (process name)
[ -z "$1" ] && return
local -a array
local ppid pid comm
# can't pipe 'ps ... | while' as that creates a subshell that loses $array
while read ppid pid comm
do
[ "$comm" = "$1" ] && array[$pid]=$ppid
done < <(ps -eo ppid,pid,comm)
# loop through each pid in array and see which value (ppid) is not a member of the array
for pid in ${!array[@]}
do
[ ${array[${array[$pid]}]-unset} = "unset" ] && { echo $pid; break; }
done
}