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5

There is big difference between them. ulimit -e only set the RLIMIT_NICE, which is a upper bound value to which the process's nice value can be set using setpriority or nice. renice alters the priority of running process. Doing strace: $ cat test.sh #!/bin/bash ulimit -e 19 Then: $ strace ./test.sh ................................................... ...


2

As someone who is using a btrfs filesystem with Arch Linux for almost 2 years now I can safely say that there does not seem to be a practical limit on the number of snapshots that can be easily reached. There are some caveats though. btrfs filesystem can lead to fragmentation. It is therefore advisable to use the online defragmentation feature built into ...



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