Commands by chrismccoy

Commands by chrismccoy (6)

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Grab the first 3 octets of your ip addresses

For machines that have many ip blocks spanning different Class C's, this will show which ones. Show Sample Output
This is sample output - yours may be different.
```
chris@golf:~$ ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'
192.68.34
192.42.21
192.91.43
```
3

ifconfig | awk -F: '/inet addr:/ { sub(/\.[^.]+$/, "", $2); if (!seen[$2]++ && $2 != "127.0.0") print $2 }'

chrismccoy · 2016-09-01 14:02:43 16
convert html links into plain text with link anchor

reverse of my previous command 10006 Show Sample Output
This is sample output - yours may be different.
```
links

<a href="http://www.domain.com">anchor</a> becomes http://www.domain.com,anchor
```
0

sed 's!<[Aa] *href*=*"$[^"]*$"*>$[^<>]*$</[Aa]>!\1,\2!g' links.html

chrismccoy · 2012-01-30 15:11:22 4
turn url and link text into a hyperlink

an extension of command 9986 by c3w, allows for link text. http://google.com,search engine will link the hyperlink with the text after the url instead of linking with the url as linktext Show Sample Output
This is sample output - yours may be different.
```
<a href="http://google.com">search engine</a>
```
-2

sed "s/$[a-zA-Z]*\:\/\/[^,]*$,$.*$/\<a href=\"\1\"\>\2\<\/a\>/"

chrismccoy · 2012-01-06 13:55:05 14
convert chrome html export to folders, links and descriptions

chrome only lets you export in html format, with a lot of table junk, this command will just export the titles of the links and the links without all that extra junk Show Sample Output
This is sample output - yours may be different.
```
<h3>search engines</h3>
<a href="http://google.com/">google search engine</a>
```
-1

grep -E '<DT><A|<DT><H3' bookmarks.html | sed 's/<DT>//' | sed '/Bookmarks bar/d' | sed 's/ ADD_DATE=\".*\"//g' | sed 's/^[ \t]*//' | tr '<A HREF' '<a href'

chrismccoy · 2011-05-26 22:21:01 9
get a list of top 1000 sites from alexa

this will dump a list of domains one per line into a text file
This is sample output - yours may be different.
-2

curl -s -O http://s3.amazonaws.com/alexa-static/top-1m.csv.zip ; unzip -q -o top-1m.csv.zip top-1m.csv ; head -1000 top-1m.csv | cut -d, -f2 | cut -d/ -f1 > topsites.txt

chrismccoy · 2010-11-01 01:25:53 5
show how many twitter followers a user has

replace username with the username you wish to check. Show Sample Output
This is sample output - yours may be different.
```
$ curl -s http://twitter.com/users/show.xml?screen_name=k | sed -n 's/\<followers_count\>//p' | sed 's/<[^>]*>//g;/</N;//b'
  9123
```
-1

curl -s http://twitter.com/users/show.xml?screen_name=username | sed -n 's/\<followers_count\>//p' | sed 's/<[^>]*>//g;/</N;//b'

chrismccoy · 2010-10-17 16:08:46 10

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use wget to check if a remote file exists

put your link [url] to check if exist the remote file

Write comments to your history.

A null operation with the name 'comment', allowing comments to be written to HISTFILE. Prepending '#' to a command will *not* write the command to the history file, although it will be available for the current session, thus '#' is not useful for keeping track of comments past the current session.

Encode a file to MPEG4 format

Encode video.avi into newvideo.avi using the libav codec to produce an MPEG4 file with a bitrate of 800

view the system memory in clear text

see what's in your memory right now... sometimes you find passwords, account numbers and url's that were recently used. Anyone have a safe command to clear the memory without rebooting?

Unix commandline history substitution like ^foo^bar BUT for multiple replacements

#1 You invoked a command chain. #2 You globaly replace the scriptnames and execute them direct #3 The new executed command chain [# ^foo^bar] would only replace the firts match [foo] with [bar].

List all authors of a particular git project

List everyone who committed to a particular project, listed alphabetically. To list by commits, add -n to the shortlog.

Labyrinth pattern

Generates labyrinth-like pattern on UTF-8 terminal in bash. For fun ;)

diff output of two commands

This only works in bash

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

What is my ip?

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