i386:- setarch - change reported architecture in new program environment and set personality flags
iconv:- The iconv utility shall convert the encoding of characters in file from one codeset to another and write the results to standard output.
id:- print real and effective user and group IDs
idn:-  Internationalized Domain Name (IDN) convert STRINGS, or standard input.
if:- if - "use" a Perl module if a condition holds
ifcfg:- This is a simplistic script replacing one option of ifconfig , namely, IP address management.
ifconfig:- configure a network interface
ifdown:- ifup - bring a network interface up ; ifdown - take a network interface down
ifenslave:- Attach and detach slave network devices to a bonding device.
ifstat:- handy utility to read net interface statistics
ifup:- ifup - bring a network interface up ; ifdown - take a network interface down
igawk:- gawk with include files
info:- read Info documents
infocmp:- compare or print out terminfo descriptions
infokey:- Compile infokey source file to infokey file.
infotocap:- convert a terminfo description into a termcap description
init:- systemd, init - systemd is a system and service manager for Linux operating systems.
insmod:- Simple program to insert a module into the Linux Kernel.
install:- This  install  program copies files (often just compiled) into destination locations you choose.
install-info:- Add  or  remove  entries  in  INFO-FILE  from  the  Info  directory  DIR-FILE.
installkernel:- installs  a  new  kernel  image  onto  the system from the Linux source tree.
ionice:- This  program  sets  or  gets  the  I/O scheduling class and priority for a program.
iostat:- command is used for monitoring system input/output device loading by observing the time the devices are  active  in  relation  to  their  average transfer  rates.
ip:- show / manipulate routing, devices, policy routing and tunnels.
ip6tables:- iptables/ip6tables — administration tool for IPv4/IPv6 packet filtering and NAT
ip6tables-restore:- iptables-restore — Restore IP Tables, ip6tables-restore — Restore IPv6 Tables
ip6tables-save:-     iptables-save — dump iptables rules to stdout
                               ip6tables-save — dump iptables rules to stdout
ipcalc:- perform simple manipulation of IP addresses
ipcmk:- allows you to create shared memory segments, message queues or semaphore arrays.
ipcrm:- remove a message queue, semaphore set or shared memory id
ipcs:- provides information on the inter-process communication facilities for which the calling process has read access.
ipmaddr:- adds, deletes, and displays multicast addresses
iprconfig:- is  used  to  configure IBM Power RAID storage adapters, display information about them, and to perform adapter and disk unit recovery.
iprdbg:- is used to debug IBM Power RAID storage adapters.
iprdump:- is used to gather information in the event of an adapter failure.
iprinit:- is used to setup IBM Power RAID adapters and devices for optimal performance.
iprupdate:- is  used  to  update the microcode on IBM storage adapters and the disk units attached to them to a minimum supported level.
iptables:- administration tool for IPv4/IPv6 packet filtering and NAT
iptables-restore:-   iptables-restore — Restore IP Tables
                               ip6tables-restore — Restore IPv6 Tables
iptables-save:-       iptables-save — dump iptables rules to stdout
                              ip6tables-save — dump iptables rules to stdout
iptables-xml:- is  used to convert the output of iptables-save into an easily manipulatable XML format to STDOUT.
iptunnel:- creates, deletes, and displays configured tunnels
irqbalance:- distribute hardware interrupts across processors on a multiprocessor system
iscsiadm:- open-iscsi administration utility
iscsid:- implements the control path of iSCSI protocol, plus some management facilities. For example, the daemon could be configured to automatically restart discovery at startup, based on the contents of persistent iSCSI database.
iscsi-iname:- generates a unique iSCSI node name on every invocation.
iscsistart:- will  start  a session using the settings passed in, or using the iBFT or Open Firmware [OF] boot information.
iscsiuio:- iSCSI UserSpace I/O driver
isosize:- output the length of an iso9660 filesystem
iw:- show / manipulate wireless devices and their configuration
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