路径问题

youcz

rm -rf docs    请问这个docs不写绝对路径的话，会受哪个环境变量的影响？

前两天遇到一个问题
su - u1
cp -rp docs/ /home/backup/
竟然不成功，文件没有成功拷贝，还是老的文件
exit
su -u1
cp -rp docs/ /home/backup/
成功了，百思不得其解

waker

1. 
   
2. -
   
3. -l
   
4. --login
   
5.      Make the shell a login shell.  This means the following.  Unset all
   
6.      environment variables except `TERM', `HOME', and `SHELL' (which
   
7.      are set as described above), and `USER' and `LOGNAME' (which are
   
8.      set, even for the super-user, as described above), and set `PATH'
   
9.      to a compiled-in default value.  Change to USER's home directory.
   
10.      Prepend `-' to the shell's name, intended to make it read its
    
11.      login startup file(s).

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