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Bash conversion of Opera sessions to "netscape standard" bookmarks

Posted 06-11-2014 at 03:34 AM by the dsc (linux-related notes)

You run it on the session folder (.win files, usually on ~/.opera/sessions/), and it will generate a single html file with all the bookmarks (taken from the last visited URL for any given tab in that session, hence the file/variable "lasturl" -- the session files record some "history", but this isn't being exported/converted here), and coded "subfolders" for each session file, with the filenames as titles. Every time it runs it rewrites this generated html file....
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Posted in Uncategorized
Views 253 Comments 0 the dsc is offline
Old
Rating: 2 votes, 4.50 average.

Convert Metric <-> Imperial

Posted 01-03-2014 at 04:14 AM by druuna
Updated 01-31-2014 at 03:24 AM by druuna

Converting from metric to imperial and vice versa using bc.

Here are a few examples in the form of functions:

# -------------------------------------------------------------------------- #
# - Imperial to metric
# -------------------------------------------------------------------------- #

  • pounds to kilograms
PHP Code:
# Function : lbToKg
# Syntax   : lbToKg <pounds>
#
# Convert pounds to kilogram
function lbToKg() { 
...
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Posted in General
Views 764 Comments 0 druuna is offline
Old

Convert numeral systems (dec <-> bin <-> hex <-> oct)

Posted 12-10-2013 at 03:41 AM by druuna
Updated 01-31-2014 at 03:24 AM by druuna

Converting from one numeral system to another can be done using the bc command.

Here are a few examples in the form of functions:

# -------------------------------------------------------------------------- #
# - Decimal to ....
# -------------------------------------------------------------------------- #
  • Binary
PHP Code:
# Convert decimal to binary
function decToBin() {
  echo 
"obase=2;$1" bc

Code:
$ decToBin 19
10011
...
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Views 598 Comments 0 druuna is offline
Old

Convert and resize images using imagemagick

Posted 05-30-2011 at 10:07 PM by sag47
Updated 05-31-2011 at 01:23 AM by sag47

This past memorial day weekend I took a bunch of pictures which I wanted to post to the web. Web photos are best viewed in 800x600px and I had a lot of them. So I used a simple command to do it.
Code:
for x in `ls -1`;do convert -resize 800x600 $x `echo $x | sed 's/.JPG/.png/'`;done
mkdir web_album
for x in `ls -1 *.png`;do convert $x web_album/`echo $x | sed 's/.png/.jpg/'`;done
rm *.png
Now I don't have to spend all my time in Gimp with that simple batch command.
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Posted in Uncategorized
Views 4160 Comments 1 sag47 is offline
Old

DVD Ripping

Posted 04-25-2011 at 10:54 AM by sag47

I work for a Scientific Institution and a company which recorded talks decided to give us all the talks in DVD format instead of a hard drive full of video files. This is kind of counter intuitive however luckily I use Linux at work. Long story short mencoder with lame installed solved my problems.

Code:
mencoder 
-vf harddup 
-vf-add smartblur=.6:-.5:0,unsharp=l5x5:.8:c5x5:.4 
-xvidencopts fixed_quant=4:profile=dxnhtntsc 
-lameopts cbr:br=128:aq=0:vol=1
...
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Posted in Uncategorized
Views 3202 Comments 1 sag47 is offline

  



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