Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Why not justsleep 3600; something.exe? Does that not work in Windows?

On Unix, I generally use ( sleep 60m; xterm -bg red ) & to set a timer to pop up a big red window after an hour, without tying up the shell.

Some of my favorites:

Scan a log file generated by strace -tt, looking for each second turnover: (should statistically find the operations requiring the most time)

perl -lane 'print $last if ($F[0] ne $lastt); $last = $_; $lastt = $F[ +0];'
Print out a running sum of the 3rd column of a file:
perl -lane 'print $s += $F[2]'
Rewrite all of the CVS/Root files in a tree (yes, this is a weird way to do it):
find . -name 'Root' -print0 | xargs -0 perl -i -pe '$_=q(:pserver:sfin +k@cvs/usr/local/cvs)'
Print out all the double-quoted strings in a file:
perl -lne 'print $1 while (/\"(.*?)\"/g)' filename
Somewhat more robust version (handles backslashes):
perl -lne 'print $1 while (/\"((\\.|[^\"])*)\"/g)' filename
Print out all of the C++ constructors in a set of files:
perl -lne 'print if /(\w+)::\1/ .. /^\}/' *.cpp
I don't know if those are really representative of my favorites. I normally just spew them out on demand, so it's difficult to think of them when I don't actually need them. The above are just the ones I've used recently enough to remember.

In reply to Re^2: Favourite One-liners? by sfink
in thread Favourite One-liners? by ghenry

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (4)
As of 2022-01-23 15:55 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    In 2022, my preferred method to securely store passwords is:












    Results (64 votes). Check out past polls.

    Notices?