shell常见报错

1.[root@web01 scripts]# cat -A nginx.sh |head -6 脚本特殊符号#!/bin/bash^M$HOST="127.0.0.1"^M$
PORT="80"^M$
stub_status=nginx_status^M$
pidof_addr=`which pidof`^M$
function check() {^M$

window格式转换
yum install dos2unix.x86_64 -y &>/dev/null 安装dos2unix.x86_64
dos2unix nginx.sh 格式转换
cat -A nginx.sh |head -6 查看

2.命令行提示符-bash-4.1$或-bash-4.2$

方法1 从别人家复制 oldboy (提示权限拒绝)

-bash-4.2$ whoami 
alex
-bash-4.2$ cp /home/oldboy/.bash*  ~
cp: cannot stat ‘/home/oldboy/.bash*’: Permission denied
-bash-4.2$ ll -d /home/oldboy/
drwx------ 2 oldboy oldboy 99 Apr 23 12:01 /home/oldboy/
-bash-4.2$ ls /home/oldboy/
ls: cannot open directory /home/oldboy/: Permission denied

方法2 从/etc/skel复制 (√)

-bash-4.2$ cp /etc/skel/.bash*   ~
-bash-4.2$ 
-bash-4.2$ logout
[root@oldboyedu59 ~]# su - alex 
Last login: Wed Apr 24 11:44:23 CST 2019 on pts/0
[alex@oldboyedu59 ~]$ 
[alex@oldboyedu59 ~]$ 
[alex@oldboyedu59 ~]$