Ubuntu Operating System Related Skills

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System Backup, Restore, and Clone

• ucloner: Backup/restore/clone your Ubuntu, and make Live-Ubuntu.

File Management

• krusader: Twin panel file management for your desktop. Similar to TotalCommander for Windows.

FileSystem

• Support filesystem type 'exfat'

  You need to install ExFat support in Ubuntu. You can do that by simply running the following commands:
  
  sudo apt-add-repository ppa:relan/exfat
  sudo apt-get update
  sudo apt-get install fuse-exfat
  

Software

• How to install Adobe Reader on Ubuntu 12.04

  sudo apt-add-repository "deb http://archive.canonical.com/ $(lsb_release -sc) partner"
  sudo apt-get update
  sudo apt-get install acroread
  

• Install Request Ticket on Ubuntu 12.04

  sudo apt-get install request-tracker3.8 rt3.8*
  

Redmine

• Intall Bitnami-Redmine-2.0.3-1

  ./bitnami-redmine-2.0.3-1-linux-x64-installer.run
  

• Recover Bitnami-Redmine from 1.2.0.0 to 2.0.3-1

  1. cp old backed attachments to ~/redmine-2.0.3-1/apps/redmine/htdocs/files/
  2. replace new password by backed passwd of ~/redmine-2.0.3-1/apps/redmine/htdocs/config/database.yml
  3. start mysql: ~/redmine-2.0.3-1$ ./mysql/bin/mysql -u root -p
  4. delete database: drop database bitnami_redmine;
  5. create database: create database bitnami_redmine;
  6. grant all privileges: grant all privileges on bitnami_redmine.* to 'bitnami'@'localhost' identified by 'BITNAMI_USER_PASSWORD';
  7. flush privileges: flush privileges;
  8. exit mysql: exit;
  9. import database: ~/redmine-2.0.3-1$ ./mysql/bin/mysql -u root -p bitnami_redmine < redmine_backup.sql
  10. cd ~/redmine-2.0.3-1/apps/redmine/htdocs
  11. ../../../ruby/bin/rake db:migrate RAILS_ENV=production
  12. ../../../ruby/bin/rake db:migrate:upgrade_plugin_migrations RAILS_ENV=production
  13. ../../../ruby/bin/rake db:migrate_plugins RAILS_ENV=production
  14. ./ctlscript.sh start
  

LibreOffice

• Impress Presentation Templates: IBM's repository Modern Impress Templates LibreOffice Templates Center

Request Ticket

• Install Request Ticket on Ubuntu 12.04

  sudo apt-get install request-tracker3.8 rt3.8*
  

Bitnami Serials Software

• concrete5 最好的开源CMS系统，可以用于创建网站
• Redmine 项目管理系统
• Tracks 个人GTD系统
• ownCloud 私有云
• Pootle 在线翻译管理系统
• LimeSurvey 在线投票系统
• Gitorious 私人Github

Linux Skills

• How to link Windows Shared Directory from Linux?

  sudo mount -t cifs -o username=yourname,passwd='yourpasswd' //ipaddcrss/shareddir /mnt/samba
  

Useful Commands Collection

• Modify dir can read, write, and excute only by owner

  chmod -R 700 dirpath
  

• Stat shell running time

  date_start=`date|awk -F"[ :]" '{print $4*3600 + $5*60 +$6}'
  
  your shells
  
  date_end=`date|awk -F"[ :]" '{print $4*3600 + $5*60 +$6}'`
  time=`expr "$date_end" - "$date_start"`
  echo "the whole process takes $time seconds"
  

• Multi-thread downloading

  lftp -c 'pget -n 10 your-file-path'
  

• Check and kill port

  netstat -anp
  netstat -anp | grep 9312
        tcp 0 0 0.0.0.0:9312 0.0.0.0:* LISTEN 11902/searchd
  kill -9 11902
  

• Transfer Dos File into Linux Format. Dos File has 0d0a problem, should be replaced into 0a

  tr -d '\r' < all.en.txt > all.en.txt.dos2unix
  

• count word frequency

  filename=$1
  tr " \011" "\012\012" < $filename |sort |uniq -c|sort -nr
  

  【转】强大的shell-计算文件中单词出现次数并按次数排序
  当亲身使用了shell，方能体会其强大。之前我发表过一篇关于统计文件中单词出现次数，并按次数排序的c++程序，这可是当时微软和百度的笔试题目。而用shell实现该功能却只需要一句：tr " \011" "\012\012" < $filename |tr -dc "[a-z][A-Z]\012" |sort |uniq -c|sort -nr
  下面是源程序：
  #!/bin/sh
  set -x
  echo "enter the filename "
  read filename
  tr " \011" "\012\012" < $filename |tr -dc "[a-z][A-Z]\012" |sort |uniq -c|sort -nr
  set +x
  在这里用到了tr,sort,uniq三个过滤器以及管道，流重定向。
  tr " \011" "\012\012" < $filename 读入文件filename，并将空格和tab（\011）转换为回车(\012)
  tr -dc "[a-z][A-Z]\012" 删除文件中非字母以及回车的其他字符（-c按条件取反，-d删除）
  sort 对单词排序
  uniq –c 统计单词出现的次数（-c输出重复次数）
  sort –nr对单词出现的次数排序（-r逆序，-n按照数值比较排序）
  

• fast scan clockwise combine book

  for((i=1706;i<=1780;i++)); do wget http://address/img0$i.pdf; done
  
  for((i=1688;i<=1780;i++)); do pdftk img0$i.pdf cat 1E output convert/img0$i-2.pdf; done
  
  pdftk *.pdf cat output combined.pdf
  

• delete comments of all c++ files in specific folder

  #!/bin/bash
  
  #delcomment.sh
  function: this shell script delete the comment in c/c++ source file
  
  
  function del_comment_file()
  {
      #delete the comment line begin with '//comment'
      sed -i "/^[ \t]*\/\//d" $file
  
      #delete the commnet line end with '//comment'
      sed -i "s/\/\/[^\"]*//" $file
  
      #delete the comment only occupied one line '/* commnet */'
      sed -i "s/\/\*.*\*\///" $file
  
      #delete the comment that occupied many lines '/*comment
      # *comment
      # # */
      sed -i "/^[ \t]*\/\*/,/.*\*\//d" $file
  }
  
  function del_comment()
  {
      for file in `ls `; do
          case $file in
              *.c)
              del_comment_file
              ;;
      *.cpp)
          del_comment_file
          ;;
      *.h)
          del_comment_file
          ;;
      *)
          if [ -d $file ]; then
              cd $file
                  del_comment
                  cd ..
                  fi
                  ;;
      esac
          done
  }
  
  DIR=$1
  
  if [ ! -e $DIR ]; then
  echo "The file or directory does not exist."
  exit 1;
  fi
  
  if [ -f $DIR ]; then
  file=`basename $DIR`
  if [[ `echo $DIR | grep /` == $DIR ]]; then
  cd `echo $DIR | sed -e "s/$file//"`
  del_comment_file
  else
  del_comment_file
  fi
  
  exit 0;
  fi
  
  if [ -d $DIR ]; then
  cd $DIR
  del_comment
  exit 0;
  fi
  

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Last modified: 五 1 17 12:41:19 2014

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