dc:tldr:2c292
dc: Calculate the golden ratio, phi: set number of decimal places to 100 (100 k), square root of 5 (5 v) plus 1 (1 +), divided by 2 (2 /), and [p]rint result.
$ dc --expression='100 k 5 v 1 + 2 / p'
try on your machine
The command dc --expression='100 k 5 v 1 + 2 / p' is using the dc command-line calculator with a specific expression as the input.
In the dc command, the --expression option is used to specify the input expression that will be evaluated. The expression itself is enclosed in quotes after the --expression= part.
Now let's break down the given expression:
100: This pushes the number 100 onto the calculator stack.k: This duplicates the top value on the stack (which is 100) and adds the duplicate to the top of the stack. So after this operation, the stack will have 100, 100.5: This pushes the number 5 onto the stack.v: This pops the top two values from the stack (100 and 5) and calculates the integer division of the second value by the first value. In this case, 5 divided by 100 results in 0 since it is integer division in thedccalculator.1: This pushes the number 1 onto the stack.+: This pops the top two values from the stack (0 and 1) and performs addition. So the result is 1.2: This pushes the number 2 onto the stack./: This pops the top two values from the stack (2 and 1) and performs division. Thus, 2 divided by 1 results in 2.p: This prints the top value on the stack. In this case, it will print 2.
Therefore, when the command dc --expression='100 k 5 v 1 + 2 / p' is executed, it will evaluate the expression and print the result as 2.
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.