linux - 从作为脚本的新 bash 实例中执行一组命令

Question

我正在尝试在新的 bash session 中执行一组命令:

exec bash <<- EOF
   ln -snf $JDK_REPO'/jdk'$1 $CURRENT;
   JAVA_HOME=$(readlink -f $CURRENT);
   echo $JAVA_HOME;
   export PATH= $JAVA_HOME/bin:$PATH;
   exec usejdk 
   EOF

我得到这个错误:

 warning: here-document at line 46 delimited by end-of-file (wanted `EOF')

我尝试用 whatswrongwithmyscript 调试它，我得到:

Use <<- instead of << if you want to indent the end token.

关于在新 bash 实例中执行一组命令的任何建议？

Answer 1

这样做对我有用:

cmd="
   ln -snf $JDK_REPO'/jdk'$1 $CURRENT;
   JAVA_HOME=$(readlink -f $CURRENT);
   echo $JAVA_HOME;
   export PATH= $JAVA_HOME/bin:$PATH;
   exec usejdk"
bash <<< "$cmd"

bash <<< "$cmd"相当于echo "$cmd" | bash或 bash -c "$cmd"