在脚本或 shell 中执行的结果不同

Question

I am using the following command to remove a line in a file that works partially in script, but completely in shell.

cat "$folderDb.list" | sed "/^$elementToDeleteKey /d" > "$folderDb.list-d"

The space after $elementToDeleteKey is mandatory because the file is structured as:

KEY_WITHOUT_SPACES INFO1 INFO2 INFO3...

This code executed in my script removes the line when the key is a file (where spaces were replaced by underscore), but not when it is a folder (same replacement here). I know this doesn't matter because in this context they are both considered as strings.

This code executed by hand in the shell outputs me the desired result: the line is deleted.

Input file

/share/homes/test/test1/backup.conf 4 979 Jan 20 15:02:05 2022 /share/homes/test/test1/backup.conf
/share/homes/test/test1/backups.sh 4 843 Feb 19 23:25:02 2019 /share/homes/test/test1/backups.sh
/share/homes/test/test1/test2 8 4096 Jan 26 11:46:21 2022 /share/homes/test/test1/test2
/share/homes/test/test2 8 4096 Jan 26 11:46:21 2022 /share/homes/test/test2
/share/homes/test/test1 8 4096 Jan 27 12:21:20 2022 /share/homes/test/test1
/share/homes/test/test1/test2/backup.conf 4 324 Mar 17 23:06:42 2016 /share/homes/test/test1/test2/backup.conf

elementToDeleteKey

/share/homes/test/test2 /share/homes/test/test1/test2/backup.conf

First one is a folder and the second one is a file, but as I said, they are both strings in this perspective.

The elementToDeleteKey is backslashed before passing to sed . So it gives:

\/share\/homes\/test\/test2 \/share\/homes\/test\/test1\/test2\/backup\.conf

I am baffled? Is anyone having an explanation?

Answer 1

Finally not found what the issue was, but I fixed it by directly modifying the file instead of creating a new file.

sed -i "/^$elementToDeleteKey /d" "$folderDb.list"