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Shell/Bash 2021-09-06 19:22:03
how to get mcp23017 input in binary shell
# assuming chip is addressed to 0x20 # to setup sudo i2cset -y 1 0x20 0x00 0x00 # replace 1 with zero on rev1 pi # iodira is 0x00 and iodirb is 0x01 # setting all pins on gpa to input # echo as binary address GPIOA is 0x12 and GPIOB is 0... Add solution -
C 2021-09-04 09:43:02
global and local variables in c
#include <stdio.h> //local parameters take precedance to global// /* global variable declaration */ int a = 20; int main () { /* local variable declaration in main function */ int a = 10; int b = 20; int c = 0; printf ("value... Add solution -
Shell/Bash 2021-08-30 11:13:02
bash display items in array
$ printf '%s\n' "${my_array[@]}" Add solution -
Shell/Bash 2021-08-30 05:24:02
awk round numbers up
# Basic syntax: awk 'BEGIN {printf "%.0f\n", $field_to_round}' input_file # Where: - %.0f specifies that the field_to_round will have a precision # of 0 digits (i.e. it will be rounded to an integer). # Example usage: awk 'BEGIN {printf &quo... Add solution -
Shell/Bash 2021-08-30 02:33:01
how to assign values from a loop in bash to a single variabel
results=() for time in ${seconds_list}; do results+=($(bc -l <<< "scale=2; ($cur_time-$time)/3600")) done # print the results: printf "%s\n" "${results[@]}" Add solution
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