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linux guru: September 2014

http://lanswer.blogspot.com/2014_09_01_archive.html

Sunday, September 21, 2014. Chang@ACPNEW: /tmp$ echo "scale = 5; 5 50*3/20 (19*2)/7" bc -l xargs printf "%2.3f n". Chang@ACPNEW: /tmp$ awk '{s =$1}END{print "ave:",s/NR}' RS=" " avg.txt. For i in {1.50}. Chang@ACPNEW: /tmp$ cat b.txt tr -s " ". Cut -d$' t' -f2-. Chang@ACPNEW: /tmp$ cut -d$' t' -f2- b.txt. Links to this post. Thursday, September 18, 2014. Delete logs file older then 2 days. Find /opt/all logs/logs -mmin 2880 -exec rm {} ;. Links to this post. Subscribe to: Posts (Atom).

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linux guru: August 2014

http://lanswer.blogspot.com/2014_08_01_archive.html

Tuesday, August 19, 2014. Wordpress menu get erased. My wordpress menu get erased randomly. And I cannot replicate this issue. I duplicated my whole site to a testing site, and dump the DB. One day, I found my menu is gone, and I check the database,. Mysql select post title, post name, post type from wp posts where post type='nav menu item' ;. It return 0 menu. I disabled the plugin Stealth Publish. And fixed the issue. It took me 3 weeks find the solution. Links to this post. Subscribe to: Posts (Atom).

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linux guru: August 2013

http://lanswer.blogspot.com/2013_08_01_archive.html

Wednesday, August 21, 2013. Add CentOS6 Repo to Amazon AMI. Step 1, add centos.repo to /etc/yum.repos.d. Mirrorlist=http:/ mirrorlist.centos.org/? Baseurl=http:/ mirror.centos.org/centos/6/os/i386/. Gpgkey=http:/ mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6. Mirrorlist=http:/ mirrorlist.centos.org/? Baseurl=http:/ mirror.centos.org/centos/6/updates/i386/. Gpgkey=http:/ mirror.centos.org/centos/RPM-GPG-KEY-CentOS-6. Additional packages that may be useful. Mirrorlist=http:/ mirrorlist.centos.org/? Linux u...

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linux guru: May 2014

http://lanswer.blogspot.com/2014_05_01_archive.html

Tuesday, May 13, 2014. Rails paperclip disable validation. 1, Disable from global config file: config/application.rb. Require 'paperclip/media type spoof detector'. 2, Disable from controller. Class Logserver ActiveRecord: Base. Has attached file :serverkey, :path = "public/keys/:id/:filename", :url = "/keys/:id/:basename.:extension". Validates attachment content type :serverkey, :content type = / Atext.* Z/. Do not validate attachment file type :serverkey. Links to this post. Wednesday, May 7, 2014.

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linux guru: ES AWS

http://lanswer.blogspot.com/2015/08/es-aws.html

Friday, August 7, 2015. Wget https:/ download.elastic.co/elasticsearch/elasticsearch/elasticsearch-1.7.1.deb. Dpkg -i elasticsearch-1.7.1.deb. Bin/plugin install elasticsearch/elasticsearch-cloud-aws/2.7.0. Cat /dev/null /etc/elasticsearch/elasticsearch.yml. Subscribe to: Post Comments (Atom). Install qpid on ubuntu 14. Sub-process /usr/bin/dpkg returned an error code (. Linux Guru ChemMol.com. View my complete profile. Ethereal template. Powered by Blogger.

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linux guru: sqlr-listener error:

http://lanswer.blogspot.com/2015/07/sqlr-listener-error.html

Monday, July 6, 2015. Unable to create a shared memory segment. This is usally because an. Sqlr-listener is already running for the rovi instance. If it is not running, something may have crashed and left an old segment. Lying around. Use the ipcs command to inspect existing shared memory. Segments and the ipcrm command to remove the shared memory segment with. Error was: File exists. The pid file /usr/local/var/sqlrelay/tmp/pids/sqlr-listener-rovi was not found. This usually means that the sqlr-listener.

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linux guru: enable https (comodo cert) for apache2 & ubuntu 14

http://lanswer.blogspot.com/2015/07/enable-https-comodo-cert-for-apache2.html

Friday, July 10, 2015. Enable https (comodo cert) for apache2 and ubuntu 14. 1, make xxxxxxxxxxxx.ca-bundle file. Cat AddTrustExternalCARoot.crt COMODORSAAddTrustCA.crt COMODORSADomainValidationSecureServerCA.crt yourdomain com.crt yourdomain com.ca-bundle. 2, create cert folder under /etc/apache2/cert. 3, copy all file from comodo to this folder. Drwxr-xr-x 2 root root 4096 Jul 10 23:15 ./. Drwxr-xr-x 9 root root 4096 Jul 10 21:34 ./. Rw-r- r- 1 root root 1521 Jun 28 07:31 AddTrustExternalCARoot.crt.

lanswer.blogspot.com

linux guru: April 2015

http://lanswer.blogspot.com/2015_04_01_archive.html

Thursday, April 9, 2015. 1: root@es-master1z: # curl -XGET 'http:/ localhost:9200/gold*/ mapping? Curl -XPUT 'http:/ localhost:9200/soci*/tweets/ mapping' -d '{" ttl": {"enabled": true, "default": 5000} '. 2: curl -XPUT 'http:/ localhost:9200/smarttvsysinfo/'. Curl -XPUT 'http:/ localhost:9200/ template/template 1' -d '. Template" : "gold*",. Tweet filter" : {. Type" : "word delimiter",. Split on case change":"false",. Split on numerics":"false",. Type table": ["# = ALPHA", "@ = ALPHA", " = ALPHA"].

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linux guru: February 2014

http://lanswer.blogspot.com/2014_02_01_archive.html

Friday, February 28, 2014. 1, install github markdown gem. 2, Add markdown gem into Gem file. 3, may need do:. 4, Define your markdown in your controller. I put MD file under app/assets/markdown folder. Ang@ubuntuChef:/opt/ruby/user$ vim app/controllers/myusers controller.rb. Myusers = Myuser.all. Mdfile = File.join(Rails.root, 'app', 'assets', 'markdown', 'test.md'). Mymd = File.open(mdfile, 'rb') { file file.read }. Md = GitHub: Markdown.render(mymd). 5, update the view - DON'T forget RAW. Git push -u ...

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linux guru: install ssdeep in ubuntu

http://lanswer.blogspot.com/2015/07/install-ssdeep-in-ubuntu.html

Friday, July 3, 2015. Install ssdeep in ubuntu. Sudo apt-get install build-essential libffi-dev python python-dev python-pip automake autoconf libtool. Sudo BUILD LIB=1 pip install ssdeep. Root@SBGF: /Downloads# ssdeep VirusShare 94e75b0bc1398e516e2f4d525cd9e2d1. Ssdeep,1.1- blocksize:hash:hash,filename. 393216:wfk5JDNLkgFEXwj38789F GzKIVSVer6hiM4hjaf8IZa6:9r2nwjZ9FzKIkRYWPw6,"/home/chang/Downloads/VirusShare 94e75b0bc1398e516e2f4d525cd9e2d1". Ssdeep,1.1- blocksize:hash:hash,filename.