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I have to write a script that outputs some paths to a file. Given a number that sets the max numbers of * characters (4 for instance here), my file should be something like this in the end :

/my/path/*/*.log 
/my/path/*/*/*.log 
/my/path/*/*/*/*.log
/my/path/*/*/*/*/*.log

I've looked for pyramid patterns to draw with bash, but can't figure out my case as there is a path before the * character ...

I've tried the following :

for ((i=1; i<= max_stars; i++))
do
  echo -n "/my/path >> myfile.conf
  for ((j=1; j<=i; j++))
  do 
    echo -n "/*" >> myfile.conf
  done
done

Any ideas ?

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  • Welcome to the site. There are a number of syntax errors in the script you showed here. Please correct them and try it again. Also, you say "there is a path before the * character", but that should be correctly handled (if your script is fixed); please include the actual output of running your script in the question. Commented Jul 11, 2022 at 10:57
  • Thanks for your reply. I was able to fix the script. See other comment for solution. Commented Jul 11, 2022 at 12:01
  • Are you looking for a way of actually using those patterns later? Do you know you could use /my/path/**/*.log in bash to replace all those individual patterns if you just enable the globstar shell option? Commented Jul 11, 2022 at 12:52
  • Yes I need those specific patterns because the tool I’m using does not work with **. Thanks Commented Jul 12, 2022 at 7:49

1 Answer 1

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I was able to fix the script, this code works as expected :

for ((i=1; i<=max_stars; i++))
  do
    echo -n "/my/path" >> myfile.conf
  for ((j=1; j<=i; j++))
    do
      echo -n "/*" >> myfile.conf
    done
  echo -en '\n' >> myfile.conf
done
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