1. create a function to generate file with the filename start with 10 random characters
#!/bin/bash
WORK_DIR=/tmp/00
#define the function
create(){
i=1
while [ $i -le 5 ]
do
if [ ! -d $WORK_DIR ]
then
mkdir -p $WORK_DIR
cd $WORK_DIR && touch `</dev/urandom tr -dc "a-z" | head -c 10`_test.txt
else
cd $WORK_DIR && touch `</dev/urandom tr -dc "a-z" | head -c 10`_test.txt
fi
i=$(( $i+1 ))
done
}
# invoke the function
create
原文：https://www.cnblogs.com/amy2012/p/11627860.html