Write the command that can be used to perform the following: Compress the symbolic link /root/sfile using the compress utility and display the compression ratio. Compress the contents of the directory /root/dir1 using the gzip utility and display the compression ratio. View the contents of the file /root/letter. zip. Compress the file /root/letter using xz fast compression. Find the compression ratio of the file /root/letter. gz. Perform a test compression of the file /root/sample using the bzip2 utility. Compress the file /root/sample using the bzip2 utility while minimizing memory usage during the compression.

Write a method replacekey in the minheap class with the following signature: public void replacekey(integer oldkey, integer newkey) the method will replace the first occurrence of oldkey with the newkey, and restore the min-heap property after the change. if the oldkey does not exist in the heap, the method prints an appropriate message and returns without changing the heap. example: suppose our binary heap object (bh) has the following keys: *** 4 6 7 32 19 64 26 99 42 54 28 then the method call: bh. replacekey (oldkey integer(54), newkey integer(2))

4. a1. vince owns a television repair shop that is insured undera commercial package policy. the policy includes thebuilding and personal property coverage form and thecauses-of-loss broad form. the declarations page indicatesthat coverage applies to both the building and the namedinsured's business property. explain whether or not thefollowing losses would be covered under his policy. a. a fire occurs on the premises, and the building isbadly damaged. b. a burglar steals some money and securities from anunlocked safe. c. a business computer is damaged by vandals whobreak into the shop after business hours. d. a tornado touches down near the store. several tel-evision sets of customers in the shop for repair aredamaged in the storm. til

Technician a says that with self-adjusting clutch systems, the release bearing constantly rotates. technician b says that the ball bearing portion of the release bearing should be lubricated with high-temperature grease during routine maintenance. which technician is correct?