单项选择题

The nice value is 80 in the ps listing. Which command is used to change this to a value of 100？（）

A. renice 100 {PID}
B. renice -n 20 {PID}
C. renice --20 {PID}
D. renice -n -100 {PID}

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热门试题

单项选择题

PagereplacementsalgorithmstealsfilepagesonlywhenpercentofRAMoccupiedbyfilepages（）

A. falls below minperm.
B. is between minperm and maxperm.
C. higher than maxperm.
D. lower than maxperm.

单项选择题

WhichofthefollowingproceduresWILLNOTincreasecontiguousfreespaceonathefilesystem data1，locatedon dev lv01，thatisheavilyfragmented？（）

A. Run defragfs -r /data1； defragfs /data1
B. Run defragfs -r /dev/lv01； defragfs /dev/lv01
C. Back up the filesystem by name， unmount the filesystem， recreate the filesystem by running mkfs /dev/lv01， and restoring the data from the backup.
D. Back up the filesystem by inode， unmount the filesystem， recreate the filesystem by running mkfs /dev/lv01， and restoring the data from the backup.