linux：使用pstree和tree查看进程树和目录树

pstree工具可以查看进程的树型结构，tree工具可以查看目录的树形结构

1. pstree

1.1 pstree查看进程树：

qingsong@db2a:/tmp$ pstree

init-+-atd

|-cron

|-db2fmcd

|-db2syscr-+-db2fmp---4*[{db2fmp}]

| |-db2fmp---3*[{db2fmp}]

| |-db2sysc---13*[{db2sysc}]

| |-3*[db2syscr]

| |-db2vend

| `-{db2syscr}

|-dbus-daemon

|-dhclient

|-dockerd-+-docker-containe---7*[{docker-containe}]

| `-9*[{dockerd}]

|-5*[getty]

|-login---bash

|-master-+-pickup

| `-qmgr

|-mdadm

|-rpc.idmapd

|-rpc.mountd

|-rpc.statd

|-rpcbind

|-rsyslogd---3*[{rsyslogd}]

|-sshd-+-sshd---sshd---bash-+-bash---command-not-fou

| | |-pstree

| | `-sudo

| `-sshd---sshd---bash

|-sudo---su---bash---mysqld---27*[{mysqld}]

|-systemd-logind

|-systemd-udevd

|-upstart-file-br

|-upstart-socket-

|-upstart-udev-br

|-vmtoolsd---{vmtoolsd}

`-vmware-vmblock----4*[{vmware-vmblock-}]

1.2 pstree -p查看进程树，并打印每个进程的PID

root@db2a:~# pstree -p

init(1)-+-atd(33478)

|-cron(1126)

|-db2fmcd(1385)

|-db2syscr(26240)-+-db2fmp(26788)-+-{db2fmp}(26789)

| | |-{db2fmp}(26790)

| | |-{db2fmp}(26791)

| | `-{db2fmp}(5376)

| |-db2fmp(26256)-+-{db2fmp}(26257)

| | |-{db2fmp}(26258)

| | `-{db2fmp}(26259)

| |-db2sysc(26242)-+-{db2sysc}(26243)

| | |-{db2sysc}(26244)

| | |-{db2sysc}(26245)

| | |-{db2sysc}(26246)

| | |-{db2sysc}(26247)

| | |-{db2sysc}(26251)

| | |-{db2sysc}(26253)

| | |-{db2sysc}(26254)

| | |-{db2sysc}(26770)

| | |-{db2sysc}(5377)

| | |-{db2sysc}(32555)

| | |-{db2sysc}(32558)

| | `-{db2sysc}(35950)

| |-db2syscr(26248)

| |-db2syscr(26249)

| |-db2syscr(26250)

| |-db2vend(26252)

| `-{db2syscr}(26241)

|-dbus-daemon(674)

|-dhclient(893)

|-dockerd(976)-+-docker-containe(1534)-+-{docker-containe}(1535)

| | |-{docker-containe}(1536)

| | |-{docker-containe}(1537)

| | |-{docker-containe}(1538)

| | |-{docker-containe}(1539)

| | |-{docker-containe}(1540)

| | `-{docker-containe}(28885)

| |-{dockerd}(1427)

| |-{dockerd}(1428)

| |-{dockerd}(1429)

| |-{dockerd}(1526)

| |-{dockerd}(1527)

| |-{dockerd}(1546)

| |-{dockerd}(1547)

| |-{dockerd}(1548)

| `-{dockerd}(1656)

|-getty(1076)

|-getty(1079)

|-getty(1082)

|-getty(1083)

|-getty(1085)

|-login(1387)---bash(3712)

|-master(30557)-+-pickup(60705)

| `-qmgr(2244)

|-mdadm(30240)

|-rpc.idmapd(739)

|-rpc.mountd(1218)

|-rpc.statd(863)

|-rpcbind(857)

|-rsyslogd(790)-+-{rsyslogd}(821)

| |-{rsyslogd}(822)

| `-{rsyslogd}(823)

|-sshd(1109)-+-sshd(657)---sshd(678)---bash(679)-+-bash(746)---command-not-fou(747)

| | |-sudo(745)

| | `-sudo(3005)---su(3006)---bash(3007)---pstree(3863)

| `-sshd(24325)---sshd(24345)---bash(24346)

|-sudo(7070)---su(7071)---bash(7072)---mysqld(8845)-+-{mysqld}(8846)

| |-{mysqld}(8847)

| |-{mysqld}(8848)

| |-{mysqld}(8849)

| |-{mysqld}(8850)

| |-{mysqld}(8851)

| |-{mysqld}(8852)

| |-{mysqld}(8853)

| |-{mysqld}(8854)

| |-{mysqld}(8855)

| |-{mysqld}(8856)

| |-{mysqld}(8857)

| |-{mysqld}(8859)

| |-{mysqld}(8860)

| |-{mysqld}(8861)

| |-{mysqld}(8862)

| |-{mysqld}(8863)

| |-{mysqld}(8864)

| |-{mysqld}(8865)

| |-{mysqld}(8866)

| |-{mysqld}(8867)

| |-{mysqld}(8868)

| |-{mysqld}(8869)

| |-{mysqld}(8870)

| |-{mysqld}(8871)

| |-{mysqld}(8872)

| `-{mysqld}(9058)

|-systemd-logind(788)

|-systemd-udevd(497)

|-upstart-file-br(852)

|-upstart-socket-(855)

|-upstart-udev-br(491)

|-vmtoolsd(1443)---{vmtoolsd}(3339)

`-vmware-vmblock-(1401)-+-{vmware-vmblock-}(1404)

|-{vmware-vmblock-}(1405)

|-{vmware-vmblock-}(40323)

`-{vmware-vmblock-}(41493)

1.3 pstree -p 查看某个进程树型结构

root@db2a:~# pstree -p 26240

db2syscr(26240)-+-db2fmp(26788)-+-{db2fmp}(26789)

| |-{db2fmp}(26790)

| |-{db2fmp}(26791)

| `-{db2fmp}(5376)

|-db2fmp(26256)-+-{db2fmp}(26257)

| |-{db2fmp}(26258)

| `-{db2fmp}(26259)

|-db2sysc(26242)-+-{db2sysc}(26243)

| |-{db2sysc}(26244)

| |-{db2sysc}(26245)

| |-{db2sysc}(26246)

| |-{db2sysc}(26247)

| |-{db2sysc}(26251)

| |-{db2sysc}(26253)

| |-{db2sysc}(26254)

| |-{db2sysc}(26770)

| |-{db2sysc}(5377)

| |-{db2sysc}(32555)

| |-{db2sysc}(32558)

| `-{db2sysc}(35950)

|-db2syscr(26248)

|-db2syscr(26249)

|-db2syscr(26250)

|-db2vend(26252)

`-{db2syscr}(26241)

2. tree

2.1 查看某个目录的目录树

root@db2a:~# tree /tmp

/tmp

|-- 1

|-- 1.out

|-- EXAMPLE.txt

|-- Important\ image.jpg

|-- MongoDBIntro.pdf

|-- New

|-- db2cktsa.log

|-- dir2

| |-- MongoDBIntro.pdf

| |-- latch.out

| |-- latch.sh

| `-- mongodb.rpm

|-- file6

|-- fun.sh

|-- image\ \ 01.jpg

|-- image\ \ 02.jpg

|-- log2.bak -> log2

|-- lv1

| |-- dir1

| | `-- file3

| |-- file1

| |-- file2

| `-- lost+found

|-- lv2

| |-- dir1

| | `-- file3

| |-- file1

| |-- file2

| `-- lost+found

|-- mongo.tar

|-- mongo.taraa

|-- test

| |-- dir2.tar.gz

| |-- im\ age-1.jpg

| |-- mongodb.rpm

| `-- price.sh

|-- test2

| |-- dir2.tar.gz

| `-- price.sh

|-- text.pdf

|-- time_take.sh

|-- timing.log

|-- tmp.9Hs6fScHlN

|-- tmp.LY3ZvKPd6e

|-- txt

| |-- c

| | |-- count.c

| | `-- sample.c

| |-- ed\ -n\ 2,5!p\ test.txt

| |-- err.txt

| |-- fileL.txt

| `-- text.txt

|-- uniqfiles

|-- user.sh

|-- variables.sh

|-- vmware-root

| |-- vmware-apploader-1349.log

| |-- vmware-apploader-1414.log

| `-- vmware-apploader-1443.log

`-- z

15 directories, 45 files

2.2 查看目录树，同时打印出文件大小

root@db2a:~# tree -h /tmp/txt

/tmp/txt

|-- [4.0K] c

| |-- [ 0] count.c

| `-- [ 0] sample.c

|-- [ 12K] ed\ -n\ 2,5!p\ test.txt

|-- [ 27] err.txt

|-- [ 64] fileL.txt

|-- [ 64] fileU.txt

|-- [ 20] input.txt

|-- [ 12] log.txt

|-- [ 30] output.txt

|-- [ 21] test.txt

`-- [ 6] text.txt

1 directory, 11 files 另外， tree还可以生成html格式的目录树