Author Archives: cowman.chiang

[HBase] get/scan String or Integer value

Posted on 2016 年 04 月 22 日 by cowman.chiang

get String Value get ‘Table_Name’, ‘RowKey’, {COLUMNS=>’Column_Family:Qualify:toString’} get Integer Value get ‘Table_Name’, ‘RowKey’, {COLUMNS=>’Column_Family:Qualify:toInt’} scan and get String Value scan ‘Table_Name’, {COLUMNS=>’Column_Family:Qualify:toString’} scan and get Integer Value scan ‘Table_Name’, {COLUMNS=>’Column_Family:Qualify:toInt’}

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[HBase] run hbase command by ruby

Posted on 2016 年 04 月 22 日 by cowman.chiang

echo ‘list.each {|t| truncate t}; quit;’ | hbase shell or Drop Table echo ‘list.each {|t| disable t; drop t}; quit;’ | hbase shell Scan Table list.each {|t| print t; scan t, {LIMIT=>1};}

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Delete the specific files in all subdirectories

Posted on 2016 年 02 月 26 日 by cowman.chiang

check the find result find . -name “*.bak” -type f delete it find . -name “*.bak” -type f -delete Ref. ask Ubuntu: How can I recursively delete all files of a specific extension in the current directory?

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Get SSL cert file from the LDAP Server

Posted on 2016 年 02 月 16 日 by cowman.chiang

Ref. stackoverflow: How to save the LDAP SSL Certificate from OpenSSL echo -n | openssl s_client -connect ldapServer:636 | sed -ne ‘/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p’ > ldapserver.pem

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[Linux] Sort the disk usage

Posted on 2016 年 01 月 21 日 by cowman.chiang

du -B M –max-depth=1 | sort -g Ref.: [ubuntu] 利用du搭配sort來查看磁碟使用空間]1

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[MySQL] Resolve duplicate entry error in MySQL Replication

Posted on 2015 年 12 月 22 日 by cowman.chiang

while [ 1 ]; do if [ $(mysql -uroot -ppassword -e”show slave status G;” | grep “Duplicate entry” | wc -l) -eq 1 ] ; then mysql -uroot -ppassword -e”stop slave; set global sql_slave_skip_counter=1; start slave;”; fi; sleep 1; mysql … Continue reading →

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[jsTree] Populating the tree using JSON

Posted on 2015 年 12 月 21 日 by cowman.chiang

Using Json $(‘#using_json’).jstree({ ‘core’ : { ‘data’ : [ ‘Simple root node’, { ‘text’ : ‘Root node 2’, ‘state’ : { ‘opened’ : true, ‘selected’ : true }, ‘children’ : [ { ‘text’ : ‘Child 1’ }, ‘Child 2’ ] … Continue reading →

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[jsTree] Expand and collapse buttons.

Posted on 2015 年 12 月 21 日 by cowman.chiang

<input type=”button” value=”Expand All” onclick=”$(‘#jsTreeID’).jstree(‘open_all’);”> <input type=”button” value=”Collapse All” onclick=”$(‘#jsTreeID’).jstree(‘close_all’);”> Ref: jsTree: adding Expand All and Collapse All buttons

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[Apache] Redirect 80 to 8080

Posted on 2015 年 12 月 17 日 by cowman.chiang

enable proxy_module, proxy_http_module, rewrite_module set < Directory path > in apache config RewriteEngine on AllowOverride All edit .htaccess in your folder < IfModule mod_rewrite.c > RewriteEngine On RewriteBase / RewriteRule ^(.+)$ http://localhost:8080/jwebadm/$1 [P,L] < /IfModule > restart apache

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[JavaScript][jQuery] How to enable/disable select field?

Posted on 2015 年 12 月 15 日 by cowman.chiang

[jQuery] $(‘input[type=radio][name=ldap-sync-type]’).change(function() { if (this.value == ‘0’) { $(“select[name=day-option]”).prop(“disabled”, true); $(“select[name=clock-option]”).prop(“disabled”, true); } else if (this.value == ‘1’) { $(“select[name=day-option]”).prop(“disabled”, false); $(“select[name=clock-option]”).prop(“disabled”, false); } }); [JavaScript] $(‘input[type=radio][name=ldap-sync-type]’).change(function() { if (this.value == ‘0’) { $(“select[name=day-option]”).attr(“disabled”, “disabled”); $(“select[name=clock-option]”).attr(“disabled”, “disabled”); } else if … Continue reading →

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