bash

循环做事

#TLDR

for i in {1..10}; do echo "abc"; done;

# example
for i in {1000..3000}; do for f in example.*; do zzuf -r 0.01 -s $i < "$f" > "$i-$f"; done; done

stdout and stderr pipe to both terminal and file

sh any.sh 2>&1 | tee output.txt
sh any.sh 2>&1 | tee -a output.txt

上次命令的返回状态

echo $?