by default, will output the whole line on which 'word' has been found

the 'aunpack' command is part of atool

The "map" may be different depending on the .wmv file. run `ffprobe` to see which is the video-track in the .wmv file usually this is "0.0". Stream #0.0: Video:... Stream #0.1: Audio: .. and "1.0" corresponds to the 2nd input file - your new audio. You may want to add "-acodec wmav2" and "-ar 128k" options for 128kbit/s Windows Media Audio 2 or whatever audio-codec/quality your want. `ffmpeg -codecs | grep "EA"` gives you a list of available codecs for Encoding Audio. Try using '-sameq' instead of '-vcodec copy' (re-encode the video with same quality rather than a bit-exact copy - this often solves muxing issues but will cause a small loss of either video quality or increased bandwidth). and also try a different output format eg. 'new_video.avi' or '..mov' instead of 'new_video.wmv'. you may need both, this should work: ffmpeg -i vid.wmv -i aud.wav -sameq -map 0.0 -map 1.0 output.avi

This is equivalent to $chmod 754 /path/to/file The 3 first symbol represent permissions for the file's owner (read/write/execute). Symbols 4-5-6 represent permissions for the file's group (read/write) Symboles 7-8-9 represent permissions for other users (read-only) Owner permissions can be altered with $chmod u+rw (give r/w permissions) Group permissions can be altered with $chmod g-w (remove write permission) Other users' permissions can be altered with $chmod o-rwx (remove r/w/execute permissions) Permissions for ALL can be altered with $chmod a+rwx (give everyone full permissions)

Permission modes are noted as following: 7 read, write and execute rwx 6 read and write rw- 5 read and execute r-x 4 read only r-- 3 write and execute -wx 2 write only -w- 1 execute only --x 0 none --- The 'execute' permission when set on a directory means 'allow entering directory' https://en.wikipedia.org/wiki/Modes_%28Unix%29 https://en.wikipedia.org/wiki/Chmod http://www.tutorialspoint.com/unix/unix-file-permission.htm

can be pointed at specific files using: du -ahc /path/to/file counting only directories is faster: du -hc .

Force computer "idle" state when lid is closed, regardless of inhibitors (power manager) in place, and runs logind preset action (sleep, suspend...). See http://www.freedesktop.org/software/systemd/man/logind.conf.html

When run on an existing file, alters it's creation date.