10-30-2018
As always, when starting a thread in the Shell Programming and Scripting forum, it helps to know what operating system and shell you're using.
If /bin/sh on your system is a pure Bourne shell from the 1980's, you might want to use something like expr's : operator to return a string matching everything except a trailing 1.
If /bin/sh on your system is a modern shell supporting the parameter expansions specified by the POSIX standards, using a parameter expansion to remove a trailing 1 would be much simpler, faster, and more efficient than using expr.
Are we supposed to assume that the shell variables CDBTEST, CDBTEST1, messdba, messdba1, sat11cru, sat11cru1. s12tgts, s12tgts1, sa12ss, and sa12ss1 are defined by oraenv?
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LEARN ABOUT MOJAVE
lassign
lassign(n) Tcl Built-In Commands lassign(n)
__________________________________________________________________________________________________________________________________________________
NAME
lassign - Assign list elements to variables
SYNOPSIS
lassign list varName ?varName ...?
_________________________________________________________________
DESCRIPTION
This command treats the value list as a list and assigns successive elements from that list to the variables given by the varName arguments
in order. If there are more variable names than list elements, the remaining variables are set to the empty string. If there are more
list elements than variables, a list of unassigned elements is returned.
EXAMPLES
An illustration of how multiple assignment works, and what happens when there are either too few or too many elements.
lassign {a b c} x y z ;# Empty return
puts $x ;# Prints "a"
puts $y ;# Prints "b"
puts $z ;# Prints "c"
lassign {d e} x y z ;# Empty return
puts $x ;# Prints "d"
puts $y ;# Prints "e"
puts $z ;# Prints ""
lassign {f g h i} x y ;# Returns "h i"
puts $x ;# Prints "f"
puts $y ;# Prints "g"
The lassign command has other uses. It can be used to create the analogue of the "shift" command in many shell languages like this:
set ::argv [lassign $::argv argumentToReadOff]
SEE ALSO
lindex(n), list(n), lset(n), set(n)
KEYWORDS
assign, element, list, multiple, set, variable
Tcl 8.5 lassign(n)