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awk, bash, curl, find, grep, Linux, sed
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Functions

Commands by karpoke from sorted by
Terminal - Commands by karpoke - 7 results
curl -s http://urlxray.com/display.php?url=http://tinyurl.com/demo-xray | grep -o '<title>.*</title>' | sed 's/<title>.*--> \(.*\)<\/title>/\1/g'
2010-09-30 10:25:18
User: karpoke
Functions: grep sed
Tags: sed grep curl
-3
Up
Down
See where a shortened url takes you before click

We can put this inside a function:

fxray() { curl -s http://urlxray.com/display.php?url="$1" | grep -o '<title>.*</title>' | sed 's/<title>.*--> \(.*\)<\/title>/\1/g'; }; fxray http://tinyurl.com/demo-xray
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ls -Xp /path/to/dir | grep -Eo "\.[^/]+$" | uniq
2010-08-12 16:32:54
User: karpoke
Functions: grep ls
Tags: uniq ls grep
0
Up
Down
list all file extensions in a directory

If we want files with more than one extension, like .tar.gz, only appear the latest, .gz:

ls -Xp /path/to/dir | grep -Eo "\.[^./]+$" | uniq
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s="StrinG"; echo ${s,,}
2010-08-12 16:02:38
User: karpoke
Functions: echo
Tags: bash function
3
Up
Down
Converts uppercase chars in a string to lowercase

Another alternative is to define a function:

lower() {

echo ${@,,}

}

lower StrinG

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convert example.png -resize 100x100! output.png
2010-08-08 17:29:36
User: karpoke
Tags: convert
1
Up
Down
Reducing image size

Adding the exclamation mark to the image geometry ignores the original aspect ratio.

More info about image geometry:

http://www.imagemagick.org/script/command-line-processing.php#geometry

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ac -d | awk '{h=int($NF); m=($NF-h)*60; s=int((m-int(m))*60); m=int(m); print $0" = "h"h "m"m "s"s "}'
2010-06-24 08:08:41
User: karpoke
Functions: awk
Tags: awk ac
-1
Up
Down
print statistics about users' connect time

'ac' is included in the package 'acct', which is described as "The GNU Accounting utilities for process and login accounting". Other interesting flags are:

* print statistics for a specified user

ac -d username

* print statistics for all the users

ac -p

With my command, the output is also printed in a sexagesimal, more readable, style.

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xdg-open .
2009-09-09 07:20:32
User: karpoke
Tags: xdg-open
2
Up
Down
show current directory

Opens a file or URL in the user's preferred application.

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find . -name \*.c | xargs wc -l | tail -1 | awk '{print $1}'
2009-09-08 08:25:45
User: karpoke
Functions: awk find tail wc xargs
Tags: awk find wc
0
Up
Down
Make a statistic about the lines of code

This is really fast :)

time find . -name \*.c | xargs wc -l | tail -1 | awk '{print $1}'

204753

real 0m0.191s

user 0m0.068s

sys 0m0.116s

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