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Shell/Bash 2021-09-07 01:40:04
rename all files in a folder with progressive numbers linux
for i in *.txt; do new=$(printf "%01d.txt" "$a") mv -i -- "$i" "$new" let a=a+1 done # "%01d.txt" 01 is the number of digits you want your name to be composed of, # Example: %01.txt --> 1.txt , 2.tx... Add solution -
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 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 2021-08-29 08:09:03
self-documenting makefile
.PHONY: help help: @grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | sort | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' # All rules with double-hash comments will be automatically displayed in th... Add solution -
Shell/Bash 2021-08-28 19:08:02
ubuntu nvm
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")" [ -s "$... Add solution -
Shell/Bash 2021-08-28 08:00:02
linux install nvm
curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.35.3/install.sh | bash export NVM_DIR="$([ -z "${XDG_CONFIG_HOME-}" ] && printf %s "${HOME}/.nvm" || printf %s "${XDG_CONFIG_HOME}/nvm")" [ -s "$... Add solution -
Shell/Bash 2021-08-28 02:12:02
bash similiar to choice in cmd
#!/bin/sh show_menu(){ normal=`echo "\033[m"` menu=`echo "\033[36m"` #Blue number=`echo "\033[33m"` #yellow bgred=`echo "\033[41m"` fgred=`echo "\033[31m"` printf "\n${menu}***... Add solution
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