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linux:shellcommands [2015/07/25 02:05] – [In top command] adminlinux:shellcommands [2022/10/29 16:15] (current) – external edit 127.0.0.1
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 ==== date ==== ==== date ====
   * set date<code bash>   * set date<code bash>
-date +%Y%m%d -s "20120226"   
-date +%T -s "11:12:00"   
 date +%Y%m%d -s "20120120"   date +%Y%m%d -s "20120120"  
 date +%T -s "16:00:00" date +%T -s "16:00:00"
-date +%Y%m%d -s "20120130" 
-date +%T -s "13:43:00" 
   </code>   </code>
   * display date<code bash>   * display date<code bash>
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   * convert unixtime<code bash>   * convert unixtime<code bash>
   date -d @1098181096   date -d @1098181096
-</code>  +</code> 
 +  * sync time:<code bash> 
 +ntpdate  pool.ntp.org 
 +</code>
 ===== file and directory commands ===== ===== file and directory commands =====
 ==== dirname ==== ==== dirname ====
Line 44: Line 43:
 ls -1 ls -1
 </code> </code>
-==== find ==== +==== find files in directory==== 
-  find . -name dev+<code bash> 
 +find . -name filename 
 +</code>
 ==== ln ==== ==== ln ====
   ln [OPTION]... TARGET [LINK_NAME]   ln [OPTION]... TARGET [LINK_NAME]
Line 56: Line 57:
   df -ah   df -ah
   df -h   df -h
 +==== lock/unlock file and directory ====
 +<code bash>
 +cd /home/admin/conf
 +lsattr -a
 +-------------e- ./web
 +----i--------e- ./.
 +-------------e- ./..
 +-------------e- ./dns
 +-------------e- ./mail
 +</code> => directory /home/admin has attribute **i** => can't remove or create new files in this directory with root
 +And remove this attribute<code bash>
 +chattr -i /home/admin/conf/
 +</code>
 ===== Shell Security ===== ===== Shell Security =====
 ==== chmod ==== ==== chmod ====
   chmod a+w   chmod a+w
 =>permission write for all user =>permission write for all user
-===== Job and process commands =====+===== Job and process, threads commands =====
 ==== whereis ==== ==== whereis ====
   whereis java   whereis java
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 apache    5553  0.5 11.2 301832 56404 ?        S    16:20   0:02 /usr/sbin/httpd apache    5553  0.5 11.2 301832 56404 ?        S    16:20   0:02 /usr/sbin/httpd
 </code> </code>
-==== check memory information ====+==== Check memory information ====
 Memory space is divided into memory **used by processes, disk cache, free memory and memory used by kernel** Memory space is divided into memory **used by processes, disk cache, free memory and memory used by kernel**
 Some basic parameters in memory information: Some basic parameters in memory information:
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 00007f1b27b18000    3268    1664       0 r-x--  libphp5.so 00007f1b27b18000    3268    1664       0 r-x--  libphp5.so
 00007f1b31f4a000  123012  122464  122464 rw---    [ anon ] 00007f1b31f4a000  123012  122464  122464 rw---    [ anon ]
 +</code>
 +==== Get all threads of process ====
 +  * Get all threads in linux<code bash>
 +ps -efL
 +</code>
 +  * Get all threads of MySQL(base on config **thread_cache_size**):<code bash>
 +ps -efL | grep mysql
 </code> </code>
 ===== List Open Files for Process ===== ===== List Open Files for Process =====
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 => get content none sign "#" => get content none sign "#"
 ==== sed ==== ==== sed ====
-sed is a program used for editing data +Basic syntax:<code bash> 
- +sed -i 's/original/new/g' file.txt 
-  * Example search and replace string<code bash>+</code> 
 +Explain options: 
 +  * -i = --in-place (i.e. save back to the original file) 
 +The command string: 
 +  * s = the substitute command 
 +  * original = a regular expression describing the word to replace (or just the word itself) 
 +  * new = the text to replace it with 
 +  * g = global (i.e. replace all and not just the first occurrence) 
 +Below are some basic examples for searching and replaccing string<code bash>
 cat intro cat intro
 +</code>output:<code>
 The Unix operating system. Unix system The Unix operating system. Unix system
- +</code> 
-sed 's/Unix/UNIX/' intro  =>  Substitute Unix with UNIX +  * Substitute Unix with UNIX: <code bash> 
-The UNIX operating system. Unix system +sed 's/Unix/UNIX/g' intro  
- +</code>  => output:<code> 
-sed --in-place 's/Unix/UNIX/' intro  =>  Substitute Unix with UNIX in file intro +The UNIX operating system. Unix system</code> 
- +  * Substitute Unix with UNIX in file intro: <code bash> 
-sed 's/Unix/UNIX/g' intro   =>  Substitute Unix with UNIX+sed --in-place 's/Unix/UNIX/g' intro 
 +</code> 
 +  * Substitute Unix with UNIX<code bash> 
 +sed 's/Unix/UNIX/g' intro
 </code> </code>
   * example with -n option<code bash>   * example with -n option<code bash>
-sed -n '1,2p' intro        +sed -n '1,2p' intro</code>=> Just print the first 2 lines 
-=> Just print the first 2 lines +  * Just print lines containing UNIX: <code bash>
 sed -n '/UNIX/p' intro sed -n '/UNIX/p' intro
-=> Just print lines containing UNIX+</code>
   * example Deleting Lines<code bash>   * example Deleting Lines<code bash>
 sed '1,2d' intro sed '1,2d' intro
-=> Delete lines 1 and 2 +</code>=> Delete lines 1 and 2 
 +  * Delete all lines containing UNIX:<code bash>
 sed '/UNIX/d' intro sed '/UNIX/d' intro
-=> Delete all lines containing UNIX+</code> 
 +  * Delete all characters before string<code bash> 
 +sed 's/.*No Warranty/No Warranty/g'
 </code> </code>
 ==== awk ==== ==== awk ====
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 ( rsync  is  a  program that behaves in much the same way that rcp does, but has many more options and uses the rsync       remote-update protocol to greatly speed up file transfers when the destination file is being updated. ( rsync  is  a  program that behaves in much the same way that rcp does, but has many more options and uses the rsync       remote-update protocol to greatly speed up file transfers when the destination file is being updated.
 The rsync remote-update protocol allows rsync to transfer just the differences between two sets of files across the network connection, using an efficient checksum-search algorithm described in the technical report that accompanies  this package.) The rsync remote-update protocol allows rsync to transfer just the differences between two sets of files across the network connection, using an efficient checksum-search algorithm described in the technical report that accompanies  this package.)
-<code bash> +  * rsync in local<code bash> 
-rsync -avz   --exclude=".svn" "/home/anhvc/web/9thien.com/" /web/9thien.com/</code>+rsync -avz   --exclude=".svn" "/home/anhvc/web/9thien.com/" /web/9thien.com/ 
 +</code> 
 +  * rsync to remote host<code bash> 
 +rsync -avz --exclude=".svn"  -e "ssh -p2222" "/home/anhvc/web" 123.30.245.164:~
 </code> </code>
 ==== rsync on windows ==== ==== rsync on windows ====
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   00000520 T Java_HelloWorldJNI_sayHelloWorld__   00000520 T Java_HelloWorldJNI_sayHelloWorld__
   00000534 T Java_HelloWorldJNI_sayHelloWorld(int0_t)   00000534 T Java_HelloWorldJNI_sayHelloWorld(int0_t)
-==== svn ==== +
-Create script to checkout on linux: +
-<code bash> +
-#!/bin/bash +
-SVN_USER="dev" +
-SVN_PASS="Zfq2222244123dfdsufXH" +
-SVN_REPO="http://10.30.22.55/svn_Source" +
-SVN_SOURCE="/home/svn_source/MolySource" +
-WEB_SOURCE="/home/MolySource" +
-svn checkout $SVN_REPO --username $SVN_USER --password $SVN_PASS $SVN_SOURCE/ +
-rsync -auvz --exclude=".svn" $SVN_SOURCE/ $WEB_SOURCE/ +
-svn checkout http://222.255.122.147/repos/mole --user mole --password cpRHvPv4 /root/patchs/mole +
-</code>+
 ===== Cygwin ===== ===== Cygwin =====
 ==== Install Cygwin ==== ==== Install Cygwin ====
linux/shellcommands.1437789957.txt.gz · Last modified: (external edit)