Adding an element to a bash array with a variable Post: 302937958

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Top Forums Shell Programming and Scripting Adding an element to a bash array with a variable Post 302937958 by LMHmedchem on Wednesday 11th of March 2015 01:39:25 AM

03-11-2015

Registered User

Quote:

Originally Posted by Chubler_XL

This seems to be working fine for me:

Code:

$ CMD_STRING='-L 22 -s 0 -r -O -A i -N 100 -n'
$ CMD_STRING_LIST=(1 2 3)
$ CMD_STRING_LIST=("${CMD_STRING_LIST[@]}" "$CMD_STRING")
$ echo ${#CMD_STRING_LIST[@]}
4
$ echo ${CMD_STRING_LIST[3]}
-L 22 -s 0 -r -O -A i -N 100 -n

I wonder if your doing this all within a loop and loosing the changes due to Bash sub-shell: variables lost

Yes it is in a loop. I am trying to accumulate a list of commands to run later.

The post you linked to is interesting. I am sure I have done this kind of thing before, meaning accumulated data in an array from inside a loop. A loop is the most likely place where you would want to push allot of data into a structure. I do remember having some issues with the syntax before since I don't do it very often, but I don't remember it not working. Perhaps it matters where the array is declared. Is this like c++ where a variable declared in {} will not be in scope outside of the {}?

I will try to look for some other scripts where I have this method working.

LMHmedchem

LMHmedchem

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LEARN ABOUT OPENSOLARIS

continue

continue(1T)						       Tcl Built-In Commands						      continue(1T)

__________________________________________________________________________________________________________________________________________________

NAME

       continue - Skip to the next iteration of a loop

SYNOPSIS

       continue
_________________________________________________________________

DESCRIPTION

       This  command  is  typically invoked inside the body of a looping command such as for or foreach or while.  It returns a TCL_CONTINUE code,
       which causes a continue exception to occur.  The exception causes the current script to be aborted out to  the  innermost  containing  loop
       command,  which	then  continues with the next iteration of the loop.  Catch exceptions are also handled in a few other situations, such as
       the catch command and the outermost scripts of procedure bodies.

EXAMPLE

       Print a line for each of the integers from 0 to 10 except 5:
	      for {set x 0} {$x<10} {incr x} {
		 if {$x == 5} {
		    continue
		 }
		 puts "x is $x"
	      }

SEE ALSO

       break(1T), for(1T), foreach(1T), return(1T), while(1T)

KEYWORDS

       continue, iteration, loop

ATTRIBUTES

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

       +--------------------+-----------------+
       |  ATTRIBUTE TYPE    | ATTRIBUTE VALUE |
       +--------------------+-----------------+
       |Availability	    | SUNWTcl	      |
       +--------------------+-----------------+
       |Interface Stability | Uncommitted     |
       +--------------------+-----------------+
NOTES

       Source for Tcl is available on http://opensolaris.org.

Tcl																      continue(1T)

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