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Full Discussion: Remove carriage return from the variable
Top Forums Shell Programming and Scripting Remove carriage return from the variable Post 302878404 by Meacham12 on Friday 6th of December 2013 02:36:13 AM
Old 12-06-2013
Remove carriage return from the variable
Hi,

I try to handle very large numbers with a bash script. I run ssh command in a remote server and store the output in a local variable. But this output contains a return carriage at the end. So I try to remove it by tr But I can't figure out the right notation with printf. So my problem is:

Code:
 
var1=$( some command )

echo $var1
2.80985e+09
 
var2=`expr $var1 + 10000000`
expr: non-integer argument

printf "%f\n" $var1
2809850000.000000

printf "%s\n" $var1
2.80985e+09

If I use tr -dc '[:digit:]' with this printf output, it will remove all non character not only return carriage at the end.

So for first notation it will give me a number like 2809850000000000 and for second 28098509 and both incorrect. I need a display like 2809850000 so tr could only remove return carriage. So which parameter of printf would produce this notation? (w/o exponential nor decimal notation)

Thanks
Last edited by Meacham12; 12-06-2013 at 04:23 AM..
 

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LEARN ABOUT SUNOS

times

times(1)							   User Commands							  times(1)

NAME

       times - shell built-in function to report time usages of the current shell

SYNOPSIS

   sh
       times

   ksh
       times

DESCRIPTION

   sh
       Print the accumulated user and system times for processes run from the shell.

   ksh
       Print the accumulated user and system times for the shell and for processes run from the shell.

       On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:

       1.  Variable assignment lists preceding the command remain in effect when the command completes.

       2.  I/O redirections are processed after variable assignments.

       3.  Errors cause a script that contains them to abort.

       4.  Words,  following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
	   able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation  are  not
	   performed.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcsu			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       ksh(1), sh(1), time(1), attributes(5)

SunOS 5.10							    15 Apr 1994 							  times(1)
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