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In the tcsh shell on Unix, I would like to print the folder name together with the number of files that I searched, then feed it to a file.

However I just manage to find the number of count then write to a file, not sure how to attach the folder name along.

my_folder.txt contains a list of directory names such as:

dir_1
dir_2
dir_3

foreach a (`cat my_folder.txt`)
find ./netlists/spice/${a}.sp -newermt '8/16/2022 0:00:00' | wc -l  >check_latest.txt
end

Now that above code will output just the number of files, such as:

10
5
4

But I look to print out something like this:

dir_1   10
dir_2   5
dir_3   4

May I know how to achieve this?

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1
  • I've never tried writing a tcsh script for the common reasons so idk but isn't foreach a (`cat my_folder.txt`) an antipattern in tcsh just like for a `cat my_folder.txt` or similar would be in a bourne derived shell like bash? Commented Aug 17, 2022 at 16:02

3 Answers 3

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I'm not entirely sure what you're doing, but this might be what you want:

foreach a (`cat my_folder.txt`) echo "$a " $(find ./netlists/spice/${a}.sp -newermt '8/16/2022 0:00:00' | wc -l)  >check_latest.txt; end

Personally, I'd split it onto multiple lines to make it more readable:

foreach a (`cat my_folder.txt`)
do
  count=$(find ./netlists/spice/${a}.sp -newermt '8/16/2022 0:00:00' | wc -l)
  echo "$a $count"
done >check_latest.txt
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7
  • What shell are you writing this for? Note that you dropped end from the first command in the later loop and instead introduced do ... done and a sh-style command substitution using $(...), while keeping foreach which is not from standard sh. You also moved the redirection out of the loop without remarking on it. Commented Aug 17, 2022 at 12:13
  • @Kusalananda, that code would work in zsh. Commented Aug 17, 2022 at 12:41
  • @StéphaneChazelas Which one, the first or the last or both? It would be good if the original user could clarify what shell they are using. Commented Aug 17, 2022 at 12:49
  • @Kusalananda, second. The first would need to have the ;end removed unless the cshjunkieloops option is enabled (and from a functionality (as opposed to syntax) PoV, the redirection moved out of the loop at least). Commented Aug 17, 2022 at 12:56
  • Thanks Steve, and everyone's help this far. I try with Steve'code, however it doesn't works for me. I get 'Illegal variable name.' for Steve code #1. For code #2, my environment seem doesn't allow 'do' cmd. Commented Aug 17, 2022 at 13:44
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Here's how I would do this in tcsh:

foreach a (`cat my_folder.txt`)
  set count=`find ./netlists/spice/${a}.sp -newermt '8/16/2022 0:00:00' | wc -l`
  echo "$a $count"
end

I'm not sure what you intend the redirection to do. If you actually want the results to end up in a file you need to do the redirection at the end of the loop:

foreach a (`cat my_folder.txt`)
  set count=`find ./netlists/spice/${a}.sp -newermt '8/16/2022 0:00:00' | wc -l`
  echo "$a $count"
end > check_latest.txt
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1
  • You seem to have added a second answer that's almost the same as your first. Was that intentional? Or did you mean to edit your other one? Commented Aug 17, 2022 at 16:21
0 
#!/usr/bin/python
import os
m=open('/home/praveen/folder.txt','r')
for i in m:
    ko=os.listdir(i.strip())
    co_file=len(ko)
    print "{0} {1}".format(i.strip(),co_file)
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