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Show sorted list of files with sizes more than 1MB in the current dir
no fancy grep stuff here.

Convert CSV to JSON
Replace 'csv_file.csv' with your filename.

DVD-Rip
Make backups of your home DVDs easily. Other: mencoder dvd://1 -o "$targetDir/$dvdTitle.avi" -aid "$audioID" -ovc x264 -x264encopts qp=26:frameref=3:bframes=15:direct_pred=auto:cabac:weight_b:partitions=all:8x8dct:me=esa:me_range=24:subq=7:mixed_refs:trellis=2:bitrate=1000:nofast_pskip:threads=0 -oac mp3lame

Time conversion/format using the date command

Network traffic on NICs in mbps without sar, iperf, etc...
Need output in mbps (bits) # ./bytes-second.sh eth0 eth0 interface maximum Speed: 1000Mb/s RX:12883212 TX:17402002 B/s | RX:98 TX:132 Mb/s RX:12371647 TX:17830111 B/s | RX:94 TX:136 Mb/s RX:12502750 TX:17860915 B/s | RX:95 TX:136 Mb/s

Determine MAC address of remote host when you know its IP address
arping sends ARP requests to a neighboring host. This won't work if there is an ARP subnet gateway in the middle. If there is, you'll just get the gateway's MAC address not the host's address you are really trying to get to.

find and delete empty directories recursively
this will show the names of the deleted directories, and will delete directories that only no files, only empty directories.

Download an Entire website with wget

Remove apps with style: nuke it from orbit
You can't stand programs x, y, and z. Remove all trace of their existence by adding this function to your config. It will remove the cruft, the settings, and such and such. This function doesn't even give a damn about you trying to remove programs that don't exist: it'll just for loop to the next one on your hit list.

Batch rename extension of all files in a folder, in the example from .txt to .md

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