List contents of multiple jar files

Question

I am searching for a .class file inside a bunch of jars.

jar tf abc.jar 

works for one file. I tried

find -name \"*.jar\" | xa         


        

Answer 1

Here's what I use in Cygwin. It supports section headers per jar file as requested above.

find . -name "*.jar" \
 -exec echo ======\ {}\ ====== \; \
 -exec /c/Program\ Files/Java/jdk1.7.0_45/bin/jar.exe tf {} \; | less

For *nix, drop the ".exe":

find . -name "*.jar" \
 -exec echo ======\ {}\ ====== \; \
 -exec jar tf {} \; | less

Answer 2

I faced a similar situation where I need to search for a class in a list of jar files present in a directory. Also I wanted to know from which jar file the class belongs to. I used this below code snippet(shell script) and found out to be helpful. Below script will list down the jar files that contains the class to be searched.

#!/bin/sh
LOOK_FOR="codehaus/xfire/spring"
for i in `find . -name "*jar"`
do
  echo "Looking in $i ..."
  jar tvf $i | grep $LOOK_FOR > /dev/null
  if [ $? == 0 ]
  then
    echo "==> Found \"$LOOK_FOR\" in $i"
  fi
done

Shell script taken from : http://alvinalexander.com/blog/post/java/shell-script-search-search-multiple-jar-files-class-pattern

Answer 3

You can also use -exec option of find

find . -name "*.jar" -exec jar tf {} \;

Answer 4

Find jar files and get all classes and members saved on a txt.

(for j in $(find -name '*.jar');do echo "--$j --";jar tf $j | grep .class | sed 's#/#.#g' | sed 's/.class/ /g' | xargs -n 1 javap -classpath  $j ; done;) >> classes.txt

Answer 5

You can also use unzip which is more faster than jar (-l option to print zip content).

For instance, a small script that does roughly what you want:

#!/bin/bash

for i in $(find . -name "*.jar")
do
    if [ -f $i ]
then
    echo $i
    unzip -l $i | grep $*
fi
done

Answer 6

I don't see the necessity for using exec, this worked for me in Cygwin on Windows:

find . -name "*.jar" | while read jarfile; do unzip -l $jarfile | fgrep "foo" ; done