一些有用的Linux工具和命令

root@shentar-raspberry:~# cat abc.txt 

a

bcd

cdef

123

root@shentar-raspberry:~# nl abc.txt 

 1 a

 2 bcd

 3 cdef

 4 123

root@shentar-raspberry:~# cat abc.txt |nl -

 1 a

 2 bcd

 3 cdef

 4 123

root@shentar-raspberry:~# cat a.xml 

<?xml version="1.0" encoding="utf-8"?>

<!--

picfilesuffix the file type with the suffix that can be scaned by the tool. It is ignorecase. 

inputdir specify the folder which nedd to scan.

minfilesize specify the min size of Pic file in byte.

maxpicsperonepage specify the max pic count of one index page.

threadcount specify the size of thread pool.

hashalog specify the file HASH fingerprint Algorithm. The common algorithms are: SHA-256, MD5, SHA-1. You can find the stand algorithm names in MessageDigest Algorithms.

excludedir specify the folder which you do not like the tool scan and display the content of it.

thumbnaildir specify the folder which to store the thumbnail to.-->

<config>

<picfilesuffix>

<suffix>jpg</suffix>

<suffix>jpeg</suffix>

<suffix>png</suffix>

</picfilesuffix>

<minfilesize>51200</minfilesize>

<maxfilesize>512000000</maxfilesize>

<threadcount>20</threadcount>

<maxpicsperonepage>25</maxpicsperonepage>

<hashalog>MD5</hashalog>

<accessAuth>true</accessAuth>

<inputdir>

<dir>D:\\</dir>

<dir>C:\\</dir>

</inputdir>

<excludedir>

<dir>C:\\windows\\</dir>

<dir>C:\\Program Files\\</dir>

<dir>./</dir>

</excludedir>

</config>

root@shentar-raspberry:~# cat a.xml |xmllint --format -

<?xml version="1.0" encoding="utf-8"?>

<!--

picfilesuffix the file type with the suffix that can be scaned by the tool. It is ignorecase. 

inputdir specify the folder which nedd to scan.

minfilesize specify the min size of Pic file in byte.

maxpicsperonepage specify the max pic count of one index page.

threadcount specify the size of thread pool.

hashalog specify the file HASH fingerprint Algorithm. The common algorithms are: SHA-256, MD5, SHA-1. You can find the stand algorithm names in MessageDigest Algorithms.

excludedir specify the folder which you do not like the tool scan and display the content of it.

thumbnaildir specify the folder which to store the thumbnail to.-->

<config>

  <picfilesuffix>

    <suffix>jpg</suffix>

    <suffix>jpeg</suffix>

    <suffix>png</suffix>

  </picfilesuffix>

  <minfilesize>51200</minfilesize>

  <maxfilesize>512000000</maxfilesize>

  <threadcount>20</threadcount>

  <maxpicsperonepage>25</maxpicsperonepage>

  <hashalog>MD5</hashalog>

  <accessAuth>true</accessAuth>

  <inputdir>

    <dir>D:\\</dir>

    <dir>C:\\</dir>

  </inputdir>

  <excludedir>

    <dir>C:\\windows\\</dir>

    <dir>C:\\Program Files\\</dir>

    <dir>./</dir>

  </excludedir>

</config>

root@shentar-raspberry:~# 

root@shentar-raspberry:~# cat /root/.mozilla/firefox/7dfkbioj.default/sessionCheckpoints.json

{"profile-after-change":true,"final-ui-startup":true,"sessionstore-windows-restored":true,"quit-application-granted":true,"quit-application":true,"sessionstore-final-state-write-complete":true,"profile-change-net-teardown":true,"profile-change-teardown":true,"profile-before-change":true}

root@shentar-raspberry:~# cat /root/.mozilla/firefox/7dfkbioj.default/sessionCheckpoints.json|python -m json.tool

{

    "final-ui-startup": true,

    "profile-after-change": true,

    "profile-before-change": true,

    "profile-change-net-teardown": true,

    "profile-change-teardown": true,

    "quit-application": true,

    "quit-application-granted": true,

    "sessionstore-final-state-write-complete": true,

    "sessionstore-windows-restored": true

}

root@shentar-raspberry:~#

root@shentar-raspberry:~# du --max-depth=1 -h

22M    ./.sync

156K    ./.local

4.0K    ./文档

392K    ./.rpmdb

4.0K    ./.dist

122M    ./jetty-distribution-8.1.17.v20150415

4.0K    ./视频

12M    ./.mozilla

6.7M    ./.cache

8.0K    ./.ssh

4.0K    ./桌面

160K    ./.config

8.0K    ./.vim

4.0K    ./下载

20K    ./.dbus

4.0K    ./模板

27M    ./psiphon

20K    ./.gnupg

12K    ./.oracle_jre_usage

132M    ./s3curl-4win

101M    ./.m2

4.0K    ./音乐

4.0K    ./公共的

4.0K    ./.themes

4.0K    ./.icons

4.0K    ./.gconf

4.0K    ./图片

280K    ./.kodi

56K    ./.vnc

4.0K    ./.nano

515M    .

root@shentar-raspberry:~# 

root@shentar-raspberry:~# ping -f -c 1000 example.com 

PING example.com (93.184.216.34) 56(84) bytes of data.

................                          

--- example.com ping statistics ---

1000 packets transmitted, 984 received, 1% packet loss, time 12018ms

rtt min/avg/max/mdev = 283.280/293.537/303.682/3.957 ms, pipe 27, ipg/ewma 12.030/296.774 ms