Author Archives: cowman.chiang

[Jersey] disable decode the URL path

Posted on 2017 年 06 月 01 日 by cowman.chiang

use annotation “@Encoded” Ex: @Path(“{first}/get”) public Response getYouWant(@Context HttpHeaders httpHeaders, @PathParam(“first”) String first, @QueryParam(“second”) @Encoded String second);

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Linux command to get time in milliseconds

Posted on 2017 年 05 月 19 日 by cowman.chiang

src: Linux command to get time in milliseconds date +”%T.%N” returns the current time with nanoseconds. date +”%T.%6N” returns the current time with nanoseconds rounded to the first 6 digits, which is microseconds. date +”%T.%3N” returns the current time with … Continue reading →

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open external program from java for mac os x

Posted on 2017 年 03 月 24 日 by cowman.chiang

String[] cmds = {“open”, tempFile.getAbsolutePath(), “-a”, “/Applications/Microsoft Office 2011/Microsoft Excel.app”}; Runtime.getRuntime().exec(cmds);

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Add git branch name to bash prompt

Posted on 2017 年 03 月 23 日 by cowman.chiang

edit ~/.bash_profile if [ -f $(xcode-select -p)/usr/share/git-core/git-completion.bash ]; then . $(xcode-select -p)/usr/share/git-core/git-completion.bash . $(xcode-select -p)/usr/share/git-core/git-prompt.sh fi #enables color in the terminal bash shell export CLICOLOR=1 #sets up the color scheme for list export LSCOLORS=ExFxCxDxBxegedabagacad #sets up the prompt color (currently … Continue reading →

Posted in CentOS, Git, Linux, Mac, Ubuntu | Leave a comment

Install Hbase 5.9 in Mac OS X

Posted on 2017 年 03 月 10 日 by cowman.chiang

Download hbase package tar.gz file from https://www.cloudera.com/documentation/enterprise/release-notes/topics/cdh_vd_cdh_package_tarball_59.html Untar tar.gz file edit conf/hbase-env.sh export JAVA_HOME={{JAVA_HOME Directory path}} edit conf/hbase-site.xml <property> <name>hbase.rootdir</name> <value>file:///{{location}}/data</value> </property> <property> <name>hbase.zookeeper.property.dataDir</name> <value>{{location}}/zookeeper</value> </property> <property> <name>hbase.zookeeper.quorum</name> <value>{{hostname}}</value> </property> start hbase service bin/start-hbase.sh run hbase shell bin/hbase shell stop … Continue reading →

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Gson usage : formJson

Posted on 2017 年 02 月 17 日 by cowman.chiang

avoid to face the exception ‘java.lang.ClassCastException With com.google.gson.internal.LinkedTreeMap cannot be cast to…’, we use the TypeToken to convert json to List public class Object { @SerializedName(“n”) private String name; @SerializedName(“i”) private String id; public String getName() { return name; } … Continue reading →

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Redirect stdout to logFile in shell script

Posted on 2017 年 02 月 02 日 by cowman.chiang

exec > >(tee -i logfile.txt) source: stackoverflow: redirect COPY of stdout to log file from within bash script itself

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protect data validation to fail while copy and paste data

Posted on 2017 年 01 月 25 日 by cowman.chiang

Private Sub Worksheet_Change(ByVal Target As Range) ‘Does the validation range still have validation? Set range1 = Range(“B2:B6500”) If HasValidation(range1) Then Exit Sub Else Application.Undo MsgBox “您的操作將會被取消, ” & vbCrLf & “請使用下拉選單進行選擇”, vbCritical End If End Sub Private Function HasValidation(r) As … Continue reading →

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Get timestamp in milliseconds

Posted on 2017 年 01 月 24 日 by cowman.chiang

echo $(($(date +%s%N)/1000000)) in Mac OS X, the command date does not support the %N flag, we can install coreutils using homebrew. brew install coreutils Then use gdate to get which we want. echo $(($(gdate +%s%N)/1000000))

Posted in Linux, Mac | Leave a comment

find unused files and delete them

Posted on 2017 年 01 月 16 日 by cowman.chiang

find /var/log/radius/radacct -type f -name “reply*” -mtime +60 -exec rm -rf {} \; -mtime N — more than N days without being edited -exec CMD {} \; — comands, {} means the files which be found.

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