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- [frost@frost-pc ~]$ sed
- Usage: sed [OPTION]... {script-only-if-no-other-script} [input-file]...
- -n, --quiet, --silent
- suppress automatic printing of pattern space
- -e script, --expression=script
- add the script to the commands to be executed
- -f script-file, --file=script-file
- add the contents of script-file to the commands to be executed
- --follow-symlinks
- follow symlinks when processing in place
- -i[SUFFIX], --in-place[=SUFFIX]
- edit files in place (makes backup if SUFFIX supplied)
- -l N, --line-length=N
- specify the desired line-wrap length for the `l' command
- --posix
- disable all GNU extensions.
- -r, --regexp-extended
- use extended regular expressions in the script.
- -s, --separate
- consider files as separate rather than as a single continuous
- long stream.
- -u, --unbuffered
- load minimal amounts of data from the input files and flush
- the output buffers more often
- -z, --null-data
- separate lines by NUL characters
- --help display this help and exit
- --version output version information and exit
- If no -e, --expression, -f, or --file option is given, then the first
- non-option argument is taken as the sed script to interpret. All
- remaining arguments are names of input files; if no input files are
- specified, then the standard input is read.
- GNU sed home page: <http://www.gnu.org/software/sed/>.
- General help using GNU software: <http://www.gnu.org/gethelp/>.
- [frost@frost-pc ~]$ echo
- [frost@frost-pc ~]$ wget
- wget: missing URL
- Usage: wget [OPTION]... [URL]...
- Try `wget --help' for more options.
- [frost@frost-pc ~]$ grep
- Usage: grep [OPTION]... PATTERN [FILE]...
- Try 'grep --help' for more information.
- [frost@frost-pc ~]$ ffprobe
- ffprobe version 2.1.1 Copyright (c) 2007-2013 the FFmpeg developers
- built on Dec 10 2013 06:36:11 with gcc 4.8.2 (GCC)
- configuration: --prefix=/usr --disable-debug --disable-static --enable-avresample --enable-dxva2 --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-pic --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab
- libavutil 52. 48.101 / 52. 48.101
- libavcodec 55. 39.101 / 55. 39.101
- libavformat 55. 19.104 / 55. 19.104
- libavdevice 55. 5.100 / 55. 5.100
- libavfilter 3. 90.100 / 3. 90.100
- libavresample 1. 1. 0 / 1. 1. 0
- libswscale 2. 5.101 / 2. 5.101
- libswresample 0. 17.104 / 0. 17.104
- libpostproc 52. 3.100 / 52. 3.100
- Simple multimedia streams analyzer
- usage: ffprobe [OPTIONS] [INPUT_FILE]
- You have to specify one input file.
- Use -h to get full help or, even better, run 'man ffprobe'.
- [frost@frost-pc ~]$ ffmpeg
- ffmpeg version 2.1.1 Copyright (c) 2000-2013 the FFmpeg developers
- built on Dec 10 2013 06:36:11 with gcc 4.8.2 (GCC)
- configuration: --prefix=/usr --disable-debug --disable-static --enable-avresample --enable-dxva2 --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxvid --enable-pic --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab
- libavutil 52. 48.101 / 52. 48.101
- libavcodec 55. 39.101 / 55. 39.101
- libavformat 55. 19.104 / 55. 19.104
- libavdevice 55. 5.100 / 55. 5.100
- libavfilter 3. 90.100 / 3. 90.100
- libavresample 1. 1. 0 / 1. 1. 0
- libswscale 2. 5.101 / 2. 5.101
- libswresample 0. 17.104 / 0. 17.104
- libpostproc 52. 3.100 / 52. 3.100
- Hyper fast Audio and Video encoder
- usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
- Use -h to get full help or, even better, run 'man ffmpeg'
- [frost@frost-pc Desktop]$ sudo cp youtubeurlextractor /usr/local/bin/
- [frost@frost-pc Desktop]$ sudo rm -rf /usr/bin/youtubeurlextractor
- [frost@frost-pc Desktop]$ youtubeurlextractor "https://www.youtube.com/watch?v=HN5NEoziELY"
- /usr/local/bin/youtubeurlextractor: line 37: : command not found
- ^C
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