Category: Linux

FFMPEG command to mix an audio file with a video file to create a final video. ffmpeg -vcodec flv -qscale…

Linux command to convert a video file to PSP format using ffmpeg. After converting, copy the OutputFile to the video…

Show contents of an archive tar -tf archive.tar

Allows write opening of a file only append mode chattr +a file

check correct syntax and file format of ‘/etc/passwd’ and users existence pwck

Check correct syntax and file format of ‘/etc/group’ and groups existence grpck

Delete a user ( ‘-r’ eliminates home directory) userdel -r user1

Set deadline for user password chage -E 2008-12-31 user_name

Change a user’s attributes usermod -c “User FTP” -g system -d /ftp/user1 -s /bin/nologin user1

Create a new user belongs “admin” group called ‘user1’ useradd -c “Name Surname ” -g admin -d /home/user1 -s /bin/bash…