Considering folderA containing those files:
foo bar baz and folderB containing those:
foo baz foobar qux How can I copy foo and baz from folderA to a new folderC?
Note that I'm comparing only their names, not their contents.
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2 Answers
Use a for loop over the files. Parameter expansion can be used to extract parts of the path:
#! /bin/bash for file in folderA/* ; do basename=${file##*/} if [[ -f folderB/$basename ]] ; then cp "$file" folderC/"$basename" fi done You can loop over files in folderB, too, and I'd recommend it if folderB contains significantly fewer files than folderA.
This works in my bash:
echo "Folder A" ls -l ./foldera/ echo "Folder B" ls -l ./folderb/ echo "Folder C" ls -l ./folderc/ read -p "Press any key to start" duplicates=( "$(find foldera folderb -type f -exec basename {} \; |sort |uniq -d)" ) for file in ${duplicates[@]}; do cp "./foldera/$file" "./folderc/$file" done echo "Script Finish. Folder C" ls -l ./folderc/ Output:
root@debian:# ./bashtest.sh Folder A total 32 -rw-r--r-- 1 root root 8230 Oct 14 01:36 abp.png -rwxr-xr-x 1 root root 8805 Dec 9 01:58 appslist.sh -rwxrwxrwx 1 root root 2682 Nov 14 02:50 cpu.sh -rw-r--r-- 1 root root 898 Oct 11 00:25 tkinter-3.py Folder B total 24 -rw-r--r-- 1 root root 8230 Oct 14 01:36 abp.png -rw-r--r-- 1 root root 898 Oct 11 00:25 tkinter-3.py -rwxr-xr-x 1 root root 595 Oct 28 00:02 yadlist.sh -rwxr-xr-x 1 root root 2455 Nov 16 01:24 yadnotebook.sh Folder C total 0 Press any key to start Script Finish. Folder C total 16 -rw-r--r-- 1 root root 8230 Dec 18 23:55 abp.png -rw-r--r-- 1 root root 898 Dec 18 23:55 tkinter-3.py - @Patrick Answer tested and updated. Previous answer was wrong. Sorry.George Vasiliou– George Vasiliou2016-12-18 21:59:35 +00:00Commented Dec 18, 2016 at 21:59