crontab
crontab command is used to list/editc cronjobs. To list all cronjobs for current user, run crontab -l To edit cronjob for current…
Linux
gitlab
Install Gitlab on Debian/Ubuntu Install LetsEncrypt SSL on Gitlab Gitlab find version Restart gitlab gitlab-ctl restart Resconfigure gitlab, needed if you make…
Install Gitlab on Debian/Ubuntu
Install requirements echo “postfix postfix/main_mailer_type string ‘Internet Site'” | debconf-set-selections echo “postfix postfix/mailname string localhost” | debconf-set-selections curl -Ls https://packages.gitlab.com/gpg.key | apt-key…
Install SpeedTest cli on Ubuntu
speedtest.net is a popular web site for testing braodband speed. To install speedtest cli on Ubuntu, run apt install -y speedtest-cli This…
Install vsftpd on CentOS
To install vsftpd FTP server in CentOS, run yum install -y vsftpd Enable vsftpd to start on boot systemctl enable vsftpd Edit…
Test network performance with iperf
iperf can be used to test network performance between two servers. You can install iperf on Ubuntu/Debian with command apt install -y…
Load Testing with Siege
siege is an open source program to load test and bechmark web site. To install siege on Ubuntu/debian, run apt -y install…
Convert Video info MP4 using ffmpeg
Convert Video For Streaming if you want to scale the video to a specific size, use -vf scale option, for example Inject…
Create video thumbnail using ffmpeg/mplayer
Create thumbnail with ffmpeg To create thumbnail from video using ffmpeg, use ffmpeg -y -ss HH:MM:SS -i VIDEO.AVI -f image2 -vframes 1…
Scale a video using ffmpeg
To Scape a Video using ffmpeg, run ffmpeg -i FILE_NAME.avi -vf scale=1280:720 FILE_NAME_OUT.avi See ffmpeg
Cut a Video using ffmpeg
To cut a video using ffmpeg, use ffmpeg -ss 00:17:00 -i IN_FILE.avi -t DURATION_IN_SECONDS -acodec copy -vcodec copy -async 1 OUT_FILE.avi To…