There are three places where macOS is most likely to generate spam files: Xcode, iTunes and VMWare virtual machines.

1. Garbage generated by Xcode

On the command line, cd to the ~/Library directory, enter the command:

sudo du -d 1 -h

Seeing that Developer occupies 59 G, cd to Developer directory continues to locate large files with the du command above. It is found that three directories occupy the most:

(1) Users/exchen/Library/Developer/Xcode/Derived Data, temporary files generated by Xcode compilation can be completely emptied. This usually takes up a few G.

(2) Users/exchen/Library/Developer/Xcode/iOS Device Support. Xcode is used to debug and generate system symbol files. According to the situation, some commonly used debugging machines can be deleted, which usually occupies dozens of G. The author's computer occupies more than 40 G, the specific information is as follows:

$ sudo du -d 1 -h
1.9G    ./11.0.1 (15A402)
2.1G    ./9.0 (13A344)
1.9G    ./11.0.2 (15A421)
2.0G    ./11.2 (15C114)
2.0G    ./11.3.1 (15E302)
2.9G    ./10.2.1 (14D27)
1.8G    ./8.4.1 (12H321)
1.6G    ./8.1 (12B411)
2.9G    ./10.2 (14C92)
797M    ./8.2 (12D508)
1.9G    ./11.0 (15A372)
2.9G    ./10.1.1 (14B100)
996M    ./9.0.1 (13A404)
2.9G    ./10.3.3 (14G60)
2.9G    ./10.3.2 (14F89)
1.7G    ./8.3 (12F70)
2.0G    ./11.1.1 (15B150)
2.9G    ./10.3.1 (14E304)
2.2G    ./9.3.5 (13G36)
2.0G    ./11.1.2 (15B202)
1.6G    ./8.0.2 (12A405)
 44G    .

Delete unused system version directories:

$ rm -rf "9.3.5 (13G36)"
$ rm -rf "8.0.2 (12A405)"
$ rm -rf "8.1 (12B411)"
$ rm -rf "8.2 (12D508)"
$ rm -rf "8.3 (12F70)"
$ rm -rf "9.0 (13A344)"
$ rm -rf "11.0.1 (15A402)"
$ rm -rf "11.0.2 (15A421)"
$ rm -rf "11.1.1 (15B150)"
$ rm -rf "10.2 (14C92)"
$ rm -rf "10.2.1 (14D27)"
$ rm -rf "11.1.1 (15B150)"
$ rm -rf "11.1.2 (15B202)"

(3) Users/exchen/Library/Developer/Xcode/Archives, Xcode packages are saved here, generally there will be several G, the author's computer occupies 5.3 G, the specific information is as follows:

$ sudo du -d 1 -h
 15M    ./2018-07-14
2.6G    ./2018-07-25
1.8M    ./2018-07-12
 19M    ./2018-07-15
169M    ./2018-06-15
490M    ./2018-06-30
7.8M    ./2018-07-06
 24M    ./2018-07-09
2.2M    ./2018-07-10
 41M    ./2018-07-17
1.7G    ./2018-07-26
 19M    ./2018-07-18
 18M    ./2018-07-16
 77M    ./2018-06-20
1.9M    ./2018-06-28
 53M    ./2018-06-19
 73M    ./2018-07-04
 13M    ./2018-07-03

Some old versions of useless packages can be deleted as needed.

2. iTunes backup directory

(1) After the mobile phone is inserted into the computer, the default iTunes will automatically backup, delete directories that do not need backup according to the situation, open / Users / exchen / Library / Application Support / Mobile Sync / Backup, and you will see the corresponding backup directory, a directory is the backup data of a mobile phone. The information is as follows:

$ du -h
6.9M    ./68595a50880ac28f66a337e338b6b433e45232d8/Snapshot
835M    ./68595a50880ac28f66a337e338b6b433e45232d8
835M    .
$ rm -rf 68595a50880ac28f66a337e338b6b433e45232d8

(2) An application installed with iTunes will save IPA packages in the directory: / Users/exchen/Music/iTunes/iTunes Media, which can be deleted if it is not necessary to save. The information is as follows:

$ ls -al
total 5327944
drwxr-xr-x  23 exchen  staff        736  5  5 22:38 .
drwxr-xr-x   8 exchen  staff        256  5 15 23:42 ..
-rw-r--r--@  1 exchen  staff       6148  4  2 15:09 .DS_Store
-rw-r--r--   1 exchen  staff   95598501  9  2  2017 Chrome 47.2526.107.ipa
-rw-r--r--@  1 exchen  staff   28631235  3 29 22:34 Lucky Test 1.3.ipa
-rw-r--r--   1 exchen  staff   17631079  5  3 14:11 XX.ipa
-rw-r--r--   1 exchen  staff     164171  7 19  2017 getAuth_81.ipa
-rw-r--r--@  1 exchen  staff    3274620  3 30 11:52 iDevice 1.3.1.ipa
-rw-r--r--@  1 exchen  staff    3637154  3 30 11:52 iDeviceLite 1.3.1.ipa
-rw-r--r--   1 exchen  staff   10703740  5  5 21:57 webview.ipa
-rw-r--r--@  1 exchen  staff  184542678  4 17 18:43 WeChat 6.6.6.ipa
-rw-r--r--   1 exchen  staff  195773251  9  2  2017 Alipay 10.0.20.ipa
-rw-r--r--   1 exchen  staff   39572540  3 19 17:44 Let's love it..ipa
-rw-r--r--@  1 exchen  staff  841399502  4  4 15:56 Dream Journey to the West 1.168.0.ipa
-rw-r--r--   1 exchen  staff   45382867  9  2  2017 Battery Doctor 1.4.ipa
-rw-r--r--   1 exchen  staff  207238424  9  2  2017 Baidu Map 10.1.0.ipa
-rw-r--r--   1 exchen  staff  312228484  9  2  2017 Dali Dali 5.12.1.ipa
-rw-r--r--   1 exchen  staff    9748224  9  2  2017 Mobile monitor 1.0.3.ipa
-rw-r--r--   1 exchen  staff  644014622  9  2  2017 Brother Tu Long Chuan 2.2.ipa

3. Clean up VMware Fusion Virtual Machine

Virtual machines have been used for a long time, and need to be cleaned up and free up space. The method is to select the target virtual machine, select "Settings" - > "General" from the right-click menu, and click the "Clean up Virtual Machine" button. Generally, it can release at least a few to a dozen gigabytes of space, as shown in the following figure. You can rest assured that after cleaning up, the use of virtual machines will not be affected.

Original address: https://www.exchen.net/macos-manual-clean-trash.html