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• Find the files that have been modified in last 24 Hours only once(skip if its modified more than once) [duplicate]

  4 janvier 2020, par Vijay Chandra

  This question already has an answer here :

  • How to find the number of times particular file has been modified in given time range [closed]
    
    2 answers
    

  Im using this command to get all modified files in the last 24 hours in ubuntu,
  find -type f -name "*.mp4" -mtime -1 -printf "%f\n"
  How can i modify this to detect same file only once which means if same file is modified more than 1 time in the last 24 hours,It shouldnt consider this file,It should skip the file,Is there anyway to do this ?
  I need this to create a watermarking script which will find the latest files within 24hours and save the list to a txt file and with the help of this text file,I use ffmpeg to watermark the videos and move them to original location.If i do this,the find command is considering the new updated video as modified file and adding watermark again and again,The process isnt getting stopped,Someone please help to fix this.

  My code is attached below :

  #!/bin/bash find -type f -name "*.mp4" -mtime -1 -printf "%f\n" >> /home/domain.com/public_html/admin_panel/public_html/uploads/mp4/temp/file.txt filename='/home/domain.com/public_html/admin_panel/public_html/uploads/mp4/temp/file.txt' all_lines=`cat $filename` for item in $all_lines; do  cp $item /home/domain.com/public_html/admin_panel/public_html/uploads/mp4/temp ffmpeg -i $item -i watermark.png -filter_complex "[1][0]scale2ref=w='iw*30/100':h='ow/mdar'[wm][vid];[vid][wm]overlay=(main_w-overlay_w):(main_h-overlay_h)"
  
  -y /home/domain.com/public_html/admin_panel/public_html/uploads/mp4/temp/$item 
  
  done

• How many "Ruby on Rails" sites can be hosted using sub url in apache configuration file on apache4 with passenger4 on Ubuntu server ?

  17 octobre 2013, par user1731249

  Server's Hardware config :
  Ubuntu server 12.04, CPU : dual code (64-bit), RAM : 8GB, Disk : 200GB.

  Server's Software config :
  Apache2, Passenger4, Rails4, ruby2, MySQL.

  I'm developing a Ruby on Rails website which performs following tasks.

  1. Upload a series of images as zip.
  2. Extract zip images to temp directory.
  3. Convert series of images to video using FFMPEG.
  4. updating video info in MySQL db
  5. Viewing the video in HTML5 video tag.

  Maximum length of single video being 1min and on an average there may be 50 videos to be converted per day. I created three copies (Don't ask me why !) of same website and hosting three sites as sub-URLs like "example.com" being the domain and example.com/site1, example.com/site2, example.com/site3. Below is the Apache configuration :
  RailsAutoDetect off

  ServerName 127.0.0.1

      DocumentRoot /home/ubuntuuser/work/public
  
      ErrorDocument 404 /404.html
  
  
  
  RailsBaseURI /site1
  
  
  
      <directory></directory>home/ubuntuuser/work/site1/advisor/public>
  
              Allow from all
  
      Options -MultiViews
  
              RailsEnv production
  
      
  
  
  
  RailsBaseURI /site2
  
  
  
  <directory></directory>home/ubuntuuser/work/site2/advisor/public>
  
              Allow from all
  
      Options -MultiViews
  
              RailsEnv production
  
      
  
  
  
      RailsBaseURI /site3
  
  
  
  <directory></directory>home/ubuntuuser/work/site3/advisor/public>
  
              Allow from all
  
      Options -MultiViews
  
              RailsEnv production
  
      

  How many such sites can I host with sub-URLs without big performance drag ?
  Also please help to do a performance test for all the sub-URLs.

• FFmpeg Android compilation : command not found

  18 février 2019, par maxest

  So I’m trying to build, on Ubuntu, FFmpeg from sources. Here’s a script I assembled from here and there :

  #!/bin/bash
  
  
  
  NDK=$HOME/Desktop/adt/android-ndk-r19b
  
  SYSROOT=$NDK/platforms/android-26/arch-arm/
  
  TOOLCHAIN=$NDK/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64
  
  
  
  function build_one
  
  {
  
  ./configure
  
    --prefix=$PREFIX
  
    --arch=arm
  
    --target-os=linux
  
    --enable-cross-compile
  
    --cross-prefix=$TOOLCHAIN/bin/arm-linux-androideabi-
  
    --sysroot=$SYSROOT
  
    --extra-cflags="-Os -fpic $ADDI_CFLAGS"
  
    --extra-ldflags="$ADDI_LDFLAGS"
  
    $ADDITIONAL_CONFIGURE_FLAG
  
  
  
    make clean
  
    make -j9
  
    make install
  
  }
  
  
  
  CPU=arm
  
  PREFIX=$(pwd)/android/$CPU
  
  ADDI_CFLAGS="-marm"
  
  
  
  build_one

  Unfortunately I get a list of following outputs :

  ffbuild/config.sh is unchanged
  
  
  
  ./build_android_2.sh: line 26: --prefix=/home/maxest/Desktop/adt/android-ndk-r19b/sources/ffmpeg-4.1/android/arm: No such file or directory
  
  
  
  ./build_android_2.sh: line 27: --arch=arm: command not found
  
  
  
  ./build_android_2.sh: line 28: --target-os=linux: command not found
  
  
  
  ./build_android_2.sh: line 29: --enable-cross-compile: command not found
  
  
  
  ./build_android_2.sh: line 30: --cross-prefix=/home/maxest/Desktop/adt/android-ndk-r19b/toolchains/arm-linux-androideabi-4.9/prebuilt/linux-x86_64/bin/arm-linux-androideabi-: No such file or directory
  
  
  
  ./build_android_2.sh: line 31: --sysroot=/home/maxest/Desktop/adt/android-ndk-r19b/platforms/android-26/arch-arm/: No such file or directory
  
  
  
  ./build_android_2.sh: line 32: --extra-cflags=-Os -fpic -marm: command not found
  
  
  
  ./build_android_2.sh: line 34: --extra-ldflags=: command not found

  I’ve double checked all the paths are correct. Although I create by hand folder /home/maxest/Desktop/adt/android-ndk-r19b/sources/ffmpeg-4.1/android/arm because there were no folder android/arm.