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Top Forums Shell Programming and Scripting In bash script, how to assign output of a command to a variable while keeping tabs? Post 302534340 by birddie on Monday 27th of June 2011 02:58:56 PM
Old 06-27-2011
In bash script, how to assign output of a command to a variable while keeping tabs?

Hi, wondering if it's been asked before but didn't find matches from google. Basically I have this line:
Code:
myvar=$(echo -e "a\tb")

Now somehow the '\t' from the echo output gets replaced with white space and then stored in $myvar.

It creates a problem for me later to use tab as delimiter to do cut on $myvar. Anyway to keep the tabs?

Last edited by Franklin52; 06-28-2011 at 03:41 AM.. Reason: Please use code tags for code and data samples, thank you
 

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TABS(1) 						    BSD General Commands Manual 						   TABS(1)

NAME
tabs -- set terminal tabs SYNOPSIS
tabs [-n|-a|-a2|-c|-c2|-c3|-f|-p|-s|-u] [+m[n]] [-T type] tabs [-T type] [+[n]] n1[,n2,...] DESCRIPTION
The tabs utility displays a series of characters that first clears the hardware terminal tab settings and then initializes the tab stops at the specified positions and optionally adjusts the margin. The phrase "tab-stop position N" means that, from the start of a line of output, tabbing to position N shall cause the next character output to be in the (N+1)th column on that line. The following options are supported: -n Specifies repetitive tab stops separated by a uniform number of columns, n, where n is a single digit decimal number. The default usage of tabs with no arguments is equivalent to tabs -8. When -0 is used, the tab stops are cleared and no new ones set. -a Assembler, applicable to some mainframes. Equivalent to tabs 1,10,16,36,72 . -a2 Assembler, applicable to some mainframes. Equivalent to tabs 1,10,16,40,72 -c COBOL, normal format. Equivalent to tabs 1,8,12,16,20,55 -c2 COBOL, compact format (columns 1 to 6 omitted). Equivalent to tabs 1,6,10,14,49 -c3 COBOL, compact format (columns 1 to 6 omitted), with more tabs than -c2. Equivalent to tabs 1,6,10,14,18,22,26,30,34,38,42,46,50,54,58,62,67 -f FORTRAN. Equivalent to tabs 1,7,11,15,19,23 -p PL/1. Equivalent to tabs 1,5,9,13,17,21,25,29,33,37,41,45,49,53,57,61 -s SNOBOL. Equivalent to tabs 1,10,55 -T type Indicates the type of terminal. -u Assembler, applicable to some mainframes. Equivalent to tabs 1,12,20,44 EXIT STATUS
The tabs utility exits 0 on success, and >0 if an error occurs. ENVIRONMENT
The COLUMNS and TERM environment variables affect the execution of tabs as described in environ(7). The -T option overrides TERM. If neither TERM nor the -T option are present, tabs will fail. SEE ALSO
expand(1), stty(1), tput(1), unexpand(1), termcap(5) STANDARDS
The tabs utility conforms to IEEE Std 1003.1 (``POSIX.1''). HISTORY
A tabs utility first appeared in PWB UNIX. This implementation was introduced in NetBSD 6.0. AUTHORS
Roy Marples <roy@NetBSD.org> BUGS
The current termcap(5) database does not define the set left soft margin 'ML' capability for any terminals. BSD
December 9, 2008 BSD
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