脚本常用写法

目录

• shebang
• find
• grep
• awk
• for
• sed
• cat
• echo
• watch
• 改变权限
• 参考

shebang

#!/usr/bin/env bash
 
#!/bin/bash
 
#!/usr/bin/python

find

find . -name "*.txt"
 
find . -name "*.txt" -type f -exec ls -l {} \;

grep

grep -in "xxx" /tmp/xx.txt
 
grep -R "xxx" --exclude-dir="xxx" xxx.txt
 

awk

awk '{print $2}'
ps -elL | grep main | xargs -I {} taskset -p {}

for

 
for item in ${items}; do
  echo "${item}"
done
 

sed

cat

cat file
cat -n file

echo

echo "xxx"

watch

可以用来动态的执行某个脚本，定期自动执行

脚本内容

docker cp $(docker ps | grep xx-pod | grep xx-container | awk '{printf $1}'):/opt/file ./

执行

watch ./cp_test.sh

改变权限

chown -R user:user xxx
 
chmod 755 xxx

参考

https://zh-google-styleguide.readthedocs.io/en/latest/google-shell-styleguide/