Commands by alikhalil

Commands by alikhalil (15)

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Convert an image sequence into a video
This is sample output - yours may be different.
9

ffmpeg -framerate 30 -pattern_type glob -i '*.jpg' -c:v libx264 -pix_fmt yuv420p out.mp4

alikhalil · 2022-11-14 07:20:53 745
Enlarge KiCad PCB footprint pads to 2mm for all smaller pads
This is sample output - yours may be different.
0

sed -E -i.bak 's/(^ +$pad.*\(size)([^$]+)(\) $drill)([^$]+)(.*)/\1 2 2\3 1\5/g' SOURCE_FILE.kicad_pcb

alikhalil · 2022-02-12 19:25:14 422
Remove password from Bank Statement
This is sample output - yours may be different.
5

pdftk INPUT.PDF input_pw 0123456789 cat output OUTPUT.PDF

alikhalil · 2022-01-09 06:22:14 358
Combine multiple images into a video using ffmpeg

The -start_number can be ignored if sequence starts with 0, otherwise use first number in sequence
This is sample output - yours may be different.
2

ffmpeg -start_number 0053 -r 1/5 -i IMG_%04d.JPG -c:v libx264 -vf fps=25 -pix_fmt yuv420p out.mp4

alikhalil · 2021-08-01 12:39:44 357
Colorize grep output
This is sample output - yours may be different.
1

grep --color -E 'pattern|$' file

alikhalil · 2021-07-05 16:19:25 204
Reduce PDF Filesize
This is sample output - yours may be different.
2

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/screen -dNOPAUSE -dBATCH -dQUIET -dColorImageResolution=600 -dMonoImageResolution=600 -sOutputFile=output.pdf input.pdf

alikhalil · 2019-03-13 11:43:52 41
Split video files using avconv along keyframes
This is sample output - yours may be different.
1

avconv -i SOURCE.mp4 -f segment -c:v copy -bsf:v h264_mp4toannexb -an -reset_timestamps 1 OUTPUT_%05d.h264

alikhalil · 2018-12-18 05:13:38 30
Generate random password in Linux CLI

Generate a random password quickly in CLI using openssl Show Sample Output
This is sample output - yours may be different.
```
# openssl rand -base64 12
JtrhGNhRtwxoP24c
```
0

openssl rand -base64 12

alikhalil · 2017-07-18 07:13:32 20
Get playlist for Livestream on YouTube
This is sample output - yours may be different.
2

youtube-dl --list-formats <URL>; youtube-dl -f <STREAM_ID> -g <URL>

alikhalil · 2017-04-19 06:43:39 22
Take screenshot of Android device using adb and save to filesystem
This is sample output - yours may be different.
0

adb shell screencap -p | sed 's/\r$//' > FILENAME.PNG

alikhalil · 2015-10-07 09:42:36 15
Conver video file to be MPEG2 to be transferred to DVD project

The command will use avconv to convert any video file in to MPEG2 format which will be added to a DVD project.
This is sample output - yours may be different.
0

avconv -i FILE.mp4" -f dvd -c:v:0 mpeg2video -s 720x576 -r 25 -g 15 -b:v:0 8000000 -maxrate:v:0 8000000 -minrate:v:0 8000000 -bufsize:v:0 1835008 -packetsize 2048 -muxrate 10080000 -b:a 192000 -ar 48000 -c:a:0 ac3 -map 0:v -map 0:a FILE.mpeg

alikhalil · 2015-05-20 09:55:48 9
Get magnet link from URL
This is sample output - yours may be different.
0

curl -s http://host.net/url.html | grep magnet | sed -r 's/.*(magnet:[^"]*).*/\1/g'

alikhalil · 2015-04-05 08:43:01 10
wget progress bar with customized data size for dots
This is sample output - yours may be different.
2

wget blah --progress=dot -e dotbytes=100M

alikhalil · 2014-12-24 10:22:11 9
Capture desktop at resolution 1600x900 and camera video files also captures mic audio to file

Use avconv linux package to record input from camera, mic, and desktop for creating instructional videos. The generated video and audio files will required further processing to put in to a single useable video.
This is sample output - yours may be different.
0

avconv -y -f x11grab -r 12 -s 1600x900 -i :0.0 -f video4linux2 -i /dev/video0 -f alsa -i pulse -map 0:0 -vcodec rawvideo -pix_fmt yuv420p desktop.y4m -map 1:0 -vcodec rawvideo -pix_fmt yuv420p camera.y4m -map 2:0 audio.mp3

alikhalil · 2013-05-26 13:36:55 8
Start byobu (tmux) with pre-defined windows

Create a byobu (tmux) session and attach several windows to it.
This is sample output - yours may be different.
0

byobu new-session -d -s name; byobu new-window -t name:1 -n 'window-1-title' 'command-1'; byobu new-window -t name:2 -n 'window-2-title' 'command-2'; byobu select-window -t name:1; byobu -2 attach-session -t name

alikhalil · 2013-01-09 14:09:26 10

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check open ports without netstat or lsof

Show all symlinks

find out how many days since given date

You can also do this for seconds, minutes, hours, etc... Can't use dates before the epoch, though.

list files recursively by size

Simple multi-user encrypted chat server for 5 users

Client ~$ ncat --ssl localhost 9876 Change localhost to the correct ip address.

Show all LISTENing and open server connections, with port number and process name/pid

List the Sizes of Folders and Directories

I wanted an easy way to list out the sizes of directories and all of the contents of those directories recursively.

split large video file

i have a large video file, 500+ MB, so i cant upload it to flickr, so to reduce the size i split it into 2 files. the command shows the splitting for the first file, from 0-4 minutes. ss is start time and t is duration (how long you want the output file to be). credit goes to philc: http://ubuntuforums.org/showthread.php?t=480343 NOTE: when i made the second half of the video, i got a *lot* of lines like this: frame= 0 fps= 0 q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbit just be patient, it is working =)

Create a tar archive using xz compression

Compress files or a directory to xz format. XZ has superior and faster compression than bzip2 in most cases. XZ is superior to 7zip format because it can save file permissions and other metadata data.

Update zone file Serial numbers

Will edit *.db files in the same directory with todays date. Useful for doing a mass update to domains on a nameserver, adding spf records, etc. Looks for a string starting with 200 or 201 followed by 7 numbers, and replaces with todays date. This won't overwrite Ip's but i would still do some double checking after running this. Make sure your server's date is correct, otherwise insert your own serial number. $rndc reload should usually follow this command.

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