Get rid of newline from shell commands in Ruby

ruby-talk
1

I am trying to run simple shell commands in my script, but am unable to
get rid of new lines even using chomp or chop.

Is there something I am missing ?

      u=`echo '#{l}' | cut -d: -f4`.chop()
      p2=`echo '#{l}' | cut -d: -f3`.chop()
      p1=`echo '#{l}' | cut -d: -f2`.chomp()
      h=`echo '#{l}' | cut -d: -f1`.chop()

# **Cant get newlines to go !! ??**
      path="#{p1}/#{@CODELINEFILTER}#{p2}"
      puts path

Any suggestions ?

···

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2

You might try using

echo -n

and sidestep the problem completely.

Dan Nachbar

···

On Sep 23, 2011, at 2:36 PM, Pavan .. wrote:

I am trying to run simple shell commands in my script, but am unable to
get rid of new lines even using chomp or chop.

Is there something I am missing ?

     u=`echo '#{l}' | cut -d: -f4`.chop()
     p2=`echo '#{l}' | cut -d: -f3`.chop()
     p1=`echo '#{l}' | cut -d: -f2`.chomp()
     h=`echo '#{l}' | cut -d: -f1`.chop()

# **Cant get newlines to go !! ??**
     path="#{p1}/#{@CODELINEFILTER}#{p2}"
     puts path

Any suggestions ?

3

I’m somewhat confused as to why a more rubish construct like:

u,p2,p1,h = l.split(‘:’)

is not more appropriate?

···

On Sat, 24 Sep 2011 04:03:59 +0900, Dan Nachbar wrote:

On Sep 23, 2011, at 2:36 PM, Pavan … wrote:

I am trying to run simple shell commands in my script, but am unable to
get rid of new lines even using chomp or chop.

Is there something I am missing ?

 u=`echo  '#{l}' | cut -d: -f4`.chop()
 p2=`echo '#{l}' | cut -d: -f3`.chop()
 p1=`echo '#{l}' | cut -d: -f2`.chomp()
 h=`echo  '#{l}' | cut -d: -f1`.chop()

Cant get newlines to go !! ??

 path="#{p1}/#{@CODELINEFILTER}#{p2}"
 puts path

Any suggestions ?

You might try using

echo -n

and sidestep the problem completely.

Dan Nachbar