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Full Discussion: curious
Top Forums Shell Programming and Scripting curious Post 302240988 by radoulov on Saturday 27th of September 2008 01:33:43 PM
Old 09-27-2008
Code:
for i in 1 2 3; do
  sed 's/Hello/Howdy/g' test$i > test$i.new
  mv test$i.new test$i
done

If you have bash >=3.0 you can avoid the for loop and use brace expansion.
If you have a sed implementation that supports the i switch you can avoid the explicit temporary file:

Code:
$ print Hello >test{1..3}
$ head test*
==> test1 <==
Hello

==> test2 <==
Hello

==> test3 <==
Hello
$ sed -i 's/Hello/Howdy/' test[1-3] 
$ head test*                        
==> test1 <==
Howdy

==> test2 <==
Howdy

==> test3 <==
Howdy

Or just use a more powerful tool:

Code:
perl -i -pe's/Hello/Howdy/' test[1-3]

 

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LEARN ABOUT DEBIAN

purity-ng

PURITY-NG(6)							   Games Manual 						      PURITY-NG(6)

NAME

       purity-ng - general purpose purity testing software

SYNOPSIS

       purity-ng [OPTION]...  list|FILE|TESTNAME

DESCRIPTION

       Purity  is  an  interactive purity test program with a simple, user interface and datafile format.  For each test, questions are printed to
       the your terminal, and you are prompted for an answer to the current question.  At a prompt, these are your choices:

	      y      Answer "yes" to the question.
	      n      Answer "no" to the question.
	      b      Backup  one  question, if you answered it incorrectly, or someone is watching you take the test, and you don't (or do) want to admit a different answer.
	      s      Print your current score on the test you are taking.
	      q      Quit the test, and print the current score.
	      ?      Print a help screen for the current prompt.

       At the end of the test, your score is printed out.  For most purity tests, lower scores denote more "experience" of the test material.

OPTIONS

       --version
	      print current version of purity-ng

       -h, --help
	      show the help message and exit

       -p     print the test without prompting for answers.

       -r     decrypt the test using the Rot 13 algorithm.

       To get a list of all purity tests available globally on your system, run purity-ng list.

AUTHORS

       purity was originally written by Eric Lechner in 1989.  purity-ng is a reimplementation of purity in Python for modern systems, written	by
       Simon Fondrie-Teitler and Luke Faraone.

       This manual page was written by Luke Faraone.

BUGS

       If you find bugs in the application, please report these to <https://bugs.launchpad.net/purity-ng> or to your distribution's distributor.

SEE ALSO

       purity(6)

       Running purity-ng format provides documentation about the datafile format.

       Additional documentation is available online at <http://packages.python.org/purity-ng>.

								  January 7, 2011						      PURITY-NG(6)
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