Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Re: Favourite One-liners?

by etcshadow (Priest)
on Jun 27, 2005 at 22:11 UTC ( #470402=note: print w/ replies, xml ) Need Help??


in reply to Favourite One-liners?

Awesome meditation. I have so many good ones that I don't even know where to start. Perhaps with the most pathological thing in my .bashrc?

alias ww='watch '\''ptyexec w | perl -pe '\''\'\'''\''(print(" -1 "),n +ext) if $x++<2; ($i) = ($_ =~ /^.{42}\s+(\S+)/); $i=~/days/&&(print(" + 9999999999 "),next); $i=~/(?:(\d+):)?([\d.]+)([md]?)/; ($t=$1*60+$2) +; $3&&($t*=60); print sprintf(" %9d ",$t)'\''\'\'''\'' | sort -n | pe +rl -pe '\''\'\'''\''s/^\s+\S+\s+//'\''\'\'''\'''\'''
where ptyexec is this. (You can just drop the ptyexec, though, if it gives trouble, it'll just truncate the output width to 80 chars, which is a little ugly).

There's the ever-popular:

perl -pi -e 's/\r\n?/\n/' *
For fixing line-ends.

And another simple one that I love because of how it demonstrates a neat concept is just:

something | perl -lne 'END{print$x}$x+=$_'
(better known as "sum").

Update: added trailing slash to the line-end fixing regex. Thanks, tlm

------------ :Wq Not an editor command: Wq


Comment on Re: Favourite One-liners?
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://470402]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (9)
As of 2015-07-06 23:27 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (85 votes), past polls