CODEWITHSUNDEEP
unixshell
Dirk
Dirk

Reputation: 6884

Run a script over multiple files in unix

Started to learn some shell scripting. I have a perl script that runs on one file. How would I write a shell script to run the perl script a bunch of times on all files with keyword "filename" in it?

So in English, 

for /filename/ in filenames  
    perl myscript.pl completefilename

Thanks.

Upvotes: 8

Views: 20203

Answers (8)

swegi
swegi

Reputation: 4102

find . -path "\*filename\*" -exec perl myscript.pl {} \;

edit: escaped stars, didn't want the markup here

Upvotes: 4

Bob F.
Bob F.

Reputation: 3872

find . -name "filename*" -exec perl myscript.pl '{}' \;

Upvotes: 12

sness
sness

Reputation: 456

I personally use the zsh shell, which gives you a very nice way to run a command recursively on a set of subdirectories. It also allows you to change the suffix of the file, which is handly when using lame to create MP3 files of .wav files:

for i in **/*.wav; lame $i $i:r.mp3

You can also pipe the output of one command to another, which I something I use frequently when I'm downloading a number of bittorrent files and want to see the percentage that each download has completed:

for i in **/*.txt; grep -H percent $i | tail -1

Upvotes: 0

Michiel Buddingh
Michiel Buddingh

Reputation: 5919

And if you have spaces in your filenames, use the old standby

find . -maxdepth 1 -print0 | xargs -0 perl myscript.pl

Upvotes: 1

Marius Kjeldahl
Marius Kjeldahl

Reputation: 6824

One liner:

$ for file in filename1 filename2 filename3; do perl myscript $file; done

Instead of the space separated list of filenames you can also use wildcards, for instance:

$ for file in *.txt *.csv; do perl myscript $file; done

Upvotes: 1

Rob Wells
Rob Wells

Reputation: 37103

for i in $(\ls -d filenames)
do
    perl myscript.pl $i
done

The backslash in front of the 'ls' command is to temporarily disable any aliases.

HTH

Upvotes: 4

mcandre
mcandre

Reputation: 24602

FILES="keyword"

for f in "$FILES" do perl myscript.pl $f done

From http://www.cyberciti.biz/faq/bash-loop-over-file/

Upvotes: 0

Bjarke Freund-Hansen
Bjarke Freund-Hansen

Reputation: 30128

In bash:

files=`ls -1 *`
for $file in $files;
do
    perl myscript.pl $file;
done

Upvotes: 1

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