Executing a set of commands inside a new bash instance from as script

Question

I'm trying execute a set of commands in a new bash session:

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

I get this error :

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

I tried to debug it with whatswrongwithmyscript, I get :

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

Any suggestion to execute a set of commands in a new bash instance ?

Like a Makefile, you must indent with tab chars. see gnu.org/software/bash/manual/bashref.html#Here-Documents — glenn jackman
– glenn jackman, Commented May 10, 2013 at 0:29
Interesting, thanks @glennjackman , I will try it with the herdoc approach again to make sure that I'm not doing white-spaces killer mistakes. — Salah Eddine Taouririt
– Salah Eddine Taouririt, Commented May 10, 2013 at 0:32

Lynch · Accepted Answer · 2013-05-10 00:32:24Z

2

doing it this way works for me:

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"

The bash <<< "$cmd" is equivalent to echo "$cmd" | bash or bash -c "$cmd"

edited May 10, 2013 at 0:32

answered May 10, 2013 at 0:22

Lynch

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3 Comments

Salah Eddine Taouririt Over a year ago

Thanks @Lynch , I see <<< for the first time, white-spaces are killing me when writing bash scripts, first steps :)

Lynch Over a year ago

Taking the habit to always quotes your variables is a good thing. otherwise strange things happen.

Salah Eddine Taouririt Over a year ago

strange things always happen with bash.

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