How to iterate through all the files (.war) and delete certain jar inside the .war

Question

Hi i need to delete all the log4j jars which is under webapps folder inside .war files recursively. Say webapps/ has 10 .war files and it has .jar files i need to delete .jar from .war with a single command. I know how to delete jar inside war but I don't want to run 10 times to delete jar file.

> zip -d <SOME_FILE>.war <log4j>.jar

this deletes 1 log4j jar from .war need to perform on 10 war files.

score 0 · Accepted Answer · answered Dec 29 '21 at 03:05

0

Use a for loop. e.g. something like this:

for f in webapps/*.war; do
  zip -d "$f" log4j.jar
done

answered Dec 29 '21 at 03:05

cas

78,579

ok thanks, so I used $f without quotes does it matter? – user2835563 Dec 29 '21 at 03:17
yes, it does. if *.war matches a filename with spaces, tabs, newlines, etc in it then it will break. You may think "that's unlikely to happen because I know exactly what files are in that directory". And that may even be true. However, you are developing a bad habit that will inevitably cause you serious problems one day. Just get into the good habit of quoting your variables whenever you use them and avoid developing the bad habit. – cas Dec 29 '21 at 04:40
See Why does my shell script choke on whitespace or other special characters? and $VAR vs ${VAR} and to quote or not to quote for some of the reasons why you should be careful about quoting and whitespace in shell scripts. – cas Dec 29 '21 at 04:41

How to iterate through all the files (.war) and delete certain jar inside the .war

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