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umount - Pg. 1123

Command-Line Reference -s <src_addr> 1123 Uses the following IP address (which must be given as an IP number, not a host name) as the source address in outgoing probe packets. On hosts with more than one IP address, this option can be used to force the source address to be something other than the IP address of the interface that the probe packet is sent on. If the IP address is not one of this machine's interfaces, an error is returned and nothing is sent. Sets the type-of-service in probe packets to <tos>. Default is 0. Value must be a decimal integer in the range 0 to 255. This option can be used to see whether different types-of-service result in different paths. Not all values of TOS are legal or meaningful. See the IP spec for definitions. Useful values are probably - t 16 (low delay) and -t 8 (high throughput). Sets to verbose output. Lists ICMP packets received other than TIME_EXCEEDED and UNREACHA- BLE packets. Sets the time to wait for a response to a probe to <waittime> seconds. Default is three seconds. -t <tos> -v -w <waittime> tunefs tunefs Tunes up an existing file system. tunefs [-A] [-a <maxcontig>] [-d <rotdelay>] [-e <maxbpg>] [-m <min- free>] [-o <optimize_preference>] [<special> | <filesystem>] tunefs is designed to change the dynamic parameters of a file system that affect the layout policies. The parameters which are to be changed are indicated by the flags given here: -A -a <maxcontig> The file system has several backups of the superblock. Specifying this option will cause all backups to be modified as well as the primary super-block. This is potentially dangerous--use it with caution. Specifies the maximum number of contiguous blocks that will be laid out before forcing a rotational delay (see -d). The default value is 1 because most device drivers require an interrupt per disk transfer. Device drivers that can chain several buffers together in a single transfer should set this to the maximum chain length. Specifies the expected time (in milliseconds) to service a transfer completion interrupt and initiate a new transfer on the same disk. It is used to decide how much rotational spacing to place between successive -d <rotdelay>