TimedLine

Insert in a line the time it takes to write to the terminal.

$ for i in {1..5} ; do
>   sleep 0.$(($RANDOM%1000)) # waits between 0 and 1000 milliseconds
>   echo num $i
> done | ./timedline '[%ss] %i'
[0.375s] num 1
[0.527s] num 2
[0.783s] num 3
[0.159s] num 4
[0.203s] num 5

Format

• %%: an % character
• %i: input text
• %t: time in hh:mm:ss.ms format
• %s: time in seconds
• %m: time in milliseconds
• %u: time in microseconds
• %nF: with
  • n: An integer corresponding to the minimum size of the displayed number. Spaces (or zeros if the number begins with 0) are placed to the left.
  • F: s, m or u formats.

Compilation

g++ -Wall -Wextra -std=c++17 -DNDEBUG -O3 -flto -fno-exceptions -fuse-ld=gold -s timedline.cpp -o timedline