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I have the directories structure as below:

Folder1/
  |____file.txt
Folder2/
  |____file.txt 
Folder3/
  |____file.txt
  :
Foldern/
  |____file.txt   

Each .txt file in the directories has a word that I want to replace with the directory name.

file.txt:

"name": "Engineering",

I am looking to replace the word Engineering with the directory name, e.g. for Folder1:

"name": "Folder1"

My intial attempt is as below:

for f in Folder*; do (cd $f; echo $f; sed -i -e "s/Engineering/Folder*/" file.txt); done

However, the sed command doesn't seem to see Folder* as Folder numbers.

  • Great, catch, Freddy! It worked now:) – user3780018 Apr 13 at 20:33
  • Those files don't happen to be JSON files? If so, using jq rather than sed may be preferable (if one know anything about the structure of those JSON files). – Kusalananda Apr 13 at 20:49
2

There's no need to cd into the directory. You can loop over the file paths and extract the folder name:

for file in Folder*/file.txt; do
  sed -i -e "s/Engineering/${file%%/*}/" "$file"
done

The parameter expansion ${file%%/*} removes the longest suffix /* and leaves the folder name.

| improve this answer | |
  • Freddy, many thanks for the support! – user3780018 Apr 13 at 20:46
  • Hi Freddy, I noticed that the ${file%%/*} sometimes work and sometimes it doesn't! – user3780018 Apr 14 at 15:26
  • Sometimes, I get empty folder name! – user3780018 Apr 14 at 15:33
  • What is the pattern for the file path when the folder name is empty? – Freddy Apr 14 at 15:37
  • I would say e.g. jk-z30-t50-k001-za*/file.txt intead of Folder*/file.txt! – user3780018 Apr 14 at 15:40

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