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fuss:jot [2022/04/19 08:28] (current) – external edit 127.0.0.1
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 +====== Generating MAC Addresses ======
 +
 +<code bash>
 +printf "%s:%s:%s:%s:%s:%s\n" `jot -r -w "%02x" 6 0 99`
 +</code>
 +
 +====== Print Sequences of Numbers ======
 +
 +Input:
 +<code bash>
 +jot - 1000 10000 1000
 +</code>
 +
 +Output:
 +<code>
 +1000
 +2000
 +3000
 +4000
 +5000
 +6000
 +7000
 +8000
 +9000
 +10000
 +
 +</code>
 +
 +====== Generate Unique Equal-Length Random Numbers =======
 +
 +To generate 1000 unique random numbers, issue:
 +<code bash>
 +jot -r 1000 0 65535 | uniq | xargs printf "%05d\n"
 +</code>
 +
 +where the ''jot'' parameters mean:
 +  * ''-r'' means generate random numbers,
 +  * ''1000'' for 1000 random numbers,
 +  * ''0'' the starting numbers,
 +  * ''65535'' the ending random number
 +
 +The ''uniq'' command eliminates any duplicate random numbers. After that the ''barges'' command is used to pass the numbers to ''printf'' as parameter. The ''printf'' command then takes ''%05d\n'' as the formatting parameter meaning to print a 5-digit number all the time (for example, if ''jot'' generates the number ''1'', then ''printf'' makes sure to pre-pend zeros to obtain ''0001''.
  

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