X
x1
--Cool to use throw ruby into the -exec but I would just use grep in
that scenerio.
that scenerio.
P
Pat Maddox
Or you can use the tools designed for finding stuff 
find . -name "*.txt" | xargs grep Hello
That version will work for all files. You can play with find to match
any file you want.
Pat
find . -name "*.txt" | xargs grep Hello
That version will work for all files. You can play with find to match
any file you want.
Pat
A
ara.t.howard
ruby -e' puts Dir["**/**"].select{|e| e =~ /a.rb/} '
-a
--
===============================================================================
| ara [dot] t [dot] howard [at] noaa [dot] gov
| all happiness comes from the desire for others to be happy. all misery
| comes from the desire for oneself to be happy.
| -- bodhicaryavatara
===============================================================================
G
Gary Watson
This is probably something everyone in here already knows about, but I
thought it was cool enough that I wanted to post about it.
If you want to create a one liner to say search all the *.txt files
in and under the current directory for text matching "Hello", you can do
this
find -name '*.txt' -exec ruby -ne 'print if /Hello/' '{}' ';'
I know you can do this in pure ruby in like 3 lines if you use the Find
module, but I really wanted to do it with a one liner. Earlier I tried
something like this
ruby -ne 'print if /Hello/' `find -name '*.txt'`
unfortunately that version would fail if there were any spaces in the
filenames.
thought it was cool enough that I wanted to post about it.
If you want to create a one liner to say search all the *.txt files
in and under the current directory for text matching "Hello", you can do
this
find -name '*.txt' -exec ruby -ne 'print if /Hello/' '{}' ';'
I know you can do this in pure ruby in like 3 lines if you use the Find
module, but I really wanted to do it with a one liner. Earlier I tried
something like this
ruby -ne 'print if /Hello/' `find -name '*.txt'`
unfortunately that version would fail if there were any spaces in the
filenames.
N
nobuyoshi nakada
Hi,
At Tue, 27 Dec 2005 12:57:53 +0900,
Gary Watson wrote in [ruby-talk:172611]:
ruby -ne 'BEGIN{ARGV.replace(Dir[ARGV.join("\0")])}; print if /Hello/' '**/*.txt'
At Tue, 27 Dec 2005 12:57:53 +0900,
Gary Watson wrote in [ruby-talk:172611]:
ruby -ne 'BEGIN{ARGV.replace(Dir[ARGV.join("\0")])}; print if /Hello/' '**/*.txt'
G
Gary Watson
I apologize for using a brain dead example. I was more excited about the
prospect of hitting all files under the current directory recursively, not
the actual processing I used in my examples. Thanks for the pointer to
xargs. I didn't know about that one, I'll have to take a closer look at
it's man page.
prospect of hitting all files under the current directory recursively, not
the actual processing I used in my examples. Thanks for the pointer to
xargs. I didn't know about that one, I'll have to take a closer look at
it's man page.
X
x1
Ara, I always love your examples! Please keep contributing to the
community!!
BTW, I have the process management class working like a champ.. I'll
share the code with you later!
Please keep contributing to thecommunity!!
BTW, I have the process management class working like a champ.. I'll
share the code with you later!
G
Gary Allum
I know Im a n00b, but I think more than anything, its good to see you so =
=20
excited about Ruby. Learning new things really is fun in Ruby.
--=20
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
=20
excited about Ruby. Learning new things really is fun in Ruby.
--=20
Using Opera's revolutionary e-mail client: http://www.opera.com/mail/
J
James Britt
Pat said:Or you can use the tools designed for finding stuff
find . -name "*.txt" | xargs grep Hello
That version will work for all files. You can play with find to match
any file you want.
Assuming you are on a machine with find, xargs, and grep, as opposed to
just Ruby.
I like the idea of assembling command line utils that will work on any
platform where Ruby is installed (e.g., all the machines in my house).
I also like the idea of reinventing the wheel in Ruby because sometimes
you get a better wheel. Or at least one that is more hackable.
James
--
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http://www.30secondrule.com - Building Better Tools
P
Philip Rhoades
Ara,
That doesn't seem to do anything . .
Phil.
--
Philip Rhoades
Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275)
GPO Box 3411
Sydney NSW 2001
Australia
Mobile: +610)411-185-652
Fax: +610)2-8221-9599
E-mail: (e-mail address removed)
That doesn't seem to do anything . .
Phil.
--
Philip Rhoades
Pricom Pty Limited (ACN 003 252 275 ABN 91 003 252 275)
GPO Box 3411
Sydney NSW 2001
Australia
Mobile: +61
0)411-185-652Fax: +61
0)2-8221-9599E-mail: (e-mail address removed)
D
dblack
Hi --
We've strayed a little from the original thing, but along those lines
you could also do:
ruby -e 'puts Dir["**/**"].grep(/a\.rb/)'
(just guessing about the \. part
or maybe even:
ruby -e 'puts Dir["**/*a.rb*/"]
David
--
David A. Black
(e-mail address removed)
"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black
We've strayed a little from the original thing, but along those lines
you could also do:
ruby -e 'puts Dir["**/**"].grep(/a\.rb/)'
(just guessing about the \. part
or maybe even:
ruby -e 'puts Dir["**/*a.rb*/"]
David
--
David A. Black
(e-mail address removed)
"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black
M
Michael Fellinger
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I really prefer the simple variant...
ruby -e 'puts Dir["**/a*.{rb}"]'
finds all .rb that start with 'a', recursive of course
Am Dienstag, 27. Dezember 2005 11:36 schrieb (e-mail address removed):
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I really prefer the simple variant...
ruby -e 'puts Dir["**/a*.{rb}"]'
finds all .rb that start with 'a', recursive of course
Am Dienstag, 27. Dezember 2005 11:36 schrieb (e-mail address removed):
Hi --
We've strayed a little from the original thing, but along those lines
you could also do:
ruby -e 'puts Dir["**/**"].grep(/a\.rb/)'
(just guessing about the \. part
or maybe even:
ruby -e 'puts Dir["**/*a.rb*/"]
David
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R
Reinder Verlinde
Pat Maddox said:Or you can use the tools designed for finding stuff
find . -name "*.txt" | xargs grep Hello
That version will work for all files.
<educational type="but not ruby related">
Not quite. For better (maximum?) robustness, pass '-print0' to find and
'-0' to xargs. That will handle filenames with spaces and/or quotes
correctly. (If your filenames have bytes with binary value zero in them,
you still will be out of luck)
</educational>
Reinder
S
Stefan Walk
Pat said:Or you can use the tools designed for finding stuff
find . -name "*.txt" | xargs grep Hello
That version will work for all files. You can play with find to match
any file you want.
Pat
et@adel:/tmp/rb$ touch 'foo bar.txt'
et@adel:/tmp/rb$ find . -name "*.txt"
../foo bar.txt
et@adel:/tmp/rb$ find . -name "*.txt" | xargs grep Hello
grep: ./foo: No such file or directory
grep: bar.txt: No such file or directory
et@adel:/tmp/rb$ find . -name "*.txt" -print0 | xargs -0 grep Hello
et@adel:/tmp/rb$
Watch out if you are using xargs. It can get pretty nasty, especially if
there is not grep at work, but rm or alike.
Shooting yourself in the foot 101:
$ touch "foo .. bar -rf moo.o"
$ find . -name '*.o' | xargs rm
*BAM*
If you are using find and xargs, always use -print0 and -0, respectively.
Regards,
Stefan
W
W.B.Hill
Or you can use the tools designed for finding stuff
find . -name "*.txt" | xargs grep Hello
That version will work for all files. You can play with find to match
any file you want.
find . -regex '.*\.txt' -print0 | xargs -0 -n1000 grep Hello
-print0 and -0 to avoid trouble with spaces and other metagubbins.
-n1000 for a bit of a speedup
-regex to show you can ;-)
W
W.B.Hill
NT 4 kernel mode API is quite happy with \0 in filenames. But it *really*
confuses the Win32 layer! Haven't played with later versions...
A
ara.t.howard
then you probably don't have any files named 'a.rb' under the current
directory - i seem to have several hundred ;-)
cheers.
-a
--
===============================================================================
| ara [dot] t [dot] howard [at] noaa [dot] gov
| all happiness comes from the desire for others to be happy. all misery
| comes from the desire for oneself to be happy.
| -- bodhicaryavatara
===============================================================================
D
dblack
Hi --
Or abrb, or acrb, or airbag, or....
David
--
David A. Black
(e-mail address removed)
"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black
Or abrb, or acrb, or airbag, or....
David
--
David A. Black
(e-mail address removed)
"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black
A
ara.t.howard
Hi --
Or abrb, or acrb, or airbag, or....
indeed. or diectories. that's the nice thing about using select:
ruby -e' puts Dir["**/**"].select{|e| test ?f, e and e =~ /^a\.rb$/} '
-a
--
===============================================================================
| ara [dot] t [dot] howard [at] noaa [dot] gov
| all happiness comes from the desire for others to be happy. all misery
| comes from the desire for oneself to be happy.
| -- bodhicaryavatara
===============================================================================
D
dblack
Hi --
Or abrb, or acrb, or airbag, or....
indeed. or diectories. that's the nice thing about using select:
ruby -e' puts Dir["**/**"].select{|e| test ?f, e and e =~ /^a\.rb$/} '
I was just obliquely pointing out the lack of ^ and \. and $
Butit's true that Dir.[] is not very seletcive.... In fact, I think I
once submitted an RCR to let it take a second argument that would be
tested for (like: Dir["**/**"],?f]) but it was rejected. So here I am
several years later still acting as if Dir.[] could read my mind....
David
--
David A. Black
(e-mail address removed)
"Ruby for Rails", from Manning Publications, coming April 2006!
http://www.manning.com/books/black