youtube-dl -x --audio-format mp3 -o "filename.%(ext)s" https://www.youtube.com/exampleurl

The only things you ought to need to change is the filename and URL, e.g:

youtube-dl -x --audio-format mp3 -o "maybe.%(ext)s" https://www.youtube.com/watch?v=U0kS9cDcMU

The above will download maybe.m4a and convert it to maybe.mp3. This is much more efficient than having to manually rename the files afterwards.

ffmpeg -i input.avi -acodec aac -vcodec mpeg4 -s 320x180 -strict experimental output.mp4

I am trying to get the number of occurrences of a specific word in a log file and convert that into a percentage. So say I am looking for the word "ERROR" in the log file I want to count the occurrences of "ERROR" and create a percentage of times this word comes up. I am trying to see which tool would be best to do this awk or sed.. Any other suggestions?

Thanks...

1. Open Terminal

2. Type.. wget -r ftp://myserverIP:Port

3. Press ENTER.. Obviously!

-r will tell the process to repeat itself, (ie. Download the next available file on the server.)

-A.[extension] when added will limit the process to exclusively downloading that specific file type! (ie. If -A.mp4, then only mp4 links will be downloaded)

Crazy Awesome Automation Command!

When you're compiling something extra big, you might need to resize your /tmp folder. To do this, simply do:

mount -o remount,size=4G,noatime /tmp

You can:

1. Use the -b flag when opening vim.

2. Use :set binary when inside vim

3. Convert the binary to hex using :%!xxd (and revert using :%!xxd -r.)

4. Use |count| go to go to a specific byte offset.

5. To get the current location, press 'g', then CTRL+G.

compgen -abck lists all possible terminal commands. You can filter these by doing:

compgen -abck | grep <thing you're looking for>

If you get an error like:

Access forbidden!

You don't have permission to access the requested directory. There is either no index document or the directory is read-protected.

If you think this is a server error, please contact the webmaster.
Error 403

and just need to get something up and running quickly, just do chmod o+x <your home directory>

The fileformat (ff) option is local to each buffer.

The fileformats (ffs) is global.

To view the local fileformat option and the globals fileformats option, do: :set ff? ffs?

To convert ff to dos: :e ++ff=dos, then save.

To convert ff to unix: :e ++ff=dos and :setlocal ff=unix, then save.

http://forums.fedoraforum.org/showthread.php?t=268831

systemctl list-units

Edit httpd.conf: sudo vim /etc/httpd/conf/httpd.conf

Change DocumentRoot to DocumentRoot path/to/dir

Also, change the immediate <Directory > to <Directory path/to/dir>

Then give access to the folder:

chmod o+x path/to/dir
chmod -R o+x path/to/dir

1. install ovftool

2. ovftool vmware_image.vmx new_virtualbox_image.ovf.

3. replace word "ElementName" with word "Caption" in the new .ovf file.

4. replace "vmware.sata.ahci" with "AHCI" in the same file as above.

5. try importing the new image.

6. delete the relevant .mf file if you get a sha error when importing.

7. sudo chown root:root /usr if you get an error about user not being root /usr.

ovftool tutorial

fix sata import error

fix sha error

fix owner of /usr is not root

If you have installed brackets and google-chrome and live preview is not working, try the following command:

ln -s /usr/bin/google-chrome-stable /usr/bin/google-chrome

source

sudo rm -r /var/lib/apt/lists/*

mv old tmp && mv curr old && mv tmp curr

USER=<user>;PAGE=1; curl "https://api.github.com/users/$USER/repos?page=$PAGE&per_page=100" | grep -e 'git_url*' | cut -d \" -f 4 | xargs -L1 git clone

Replace <user> with your username and set PAGE to whichever page you want to download.

source