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PHP 2021-09-13 20:49:03
php sprintf
There are already some comments on using sprintf to force leading leading zeros but the examples only include integers. I needed leading zeros on floating point numbers and was surprised that it didn't work as expected. Example: <?php sprintf('%02d',... Add solution -
Shell/Bash 2021-09-10 21:18:02
shell script current time
#!/bin/bash now="$(date)" printf "Current date and time %s\n" "$now" now="$(date +'%d/%m/%Y')" printf "Current date in dd/mm/yyyy format %s\n" "$now" echo "Starting backup at $... Add solution -
Shell/Bash 2021-09-07 01:40:04
rename all files in a folder with progressive numbers linux
for i in *.txt; do new=$(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
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