Beside above solutions, there is a more "COMMON" way - directly delete the largest space consumer from Linux machine. You can follow the below steps:
Using ls -lart to list out hidden folder also, normally jenkin installation is placed in .jenkins/ folder
[xxxxx ~]$ ls -lart drwxrwxr-x 12 xxxx 4096 Feb 8 02:08 .jenkins/
Use df -h
to show Disk space in high level
du -sh ./*/
to list out total memory for each subfolder in current path.
du -a /etc/ | sort -n -r | head -n 10
will list top 10 directories eating disk space in /etc/
Normally ./job/ folder or ./workspace/ folder can be the largest folder. Please go inside and delete base on you need (DO NOT delete entire folder).
rm -rf theFolderToDelete