09-22-2019
The mentioned line is the trickiest thing of all.
You need to know what that eval is actually for. Eval adds an additional evaluation round(so I get from content of $i which may be the number "3" to the content of the following parameter $4). An additional evaluation round means that quotes are removed at the first pass, so I had to add protected quotes, which become normal quotes in the second pass.
Read about eval function in the bash manpage.
---
The question "it does not work, tell me the error" drove me away from giving any further answer, because I suspected lack of even minimal initiative/competence to investigate the problem.
The second question was very specific and showed much more of that initiative/competence, so I'm motivated to answer again.
It's no problem with having low competence level - everyone starts from nothing. But I'm not willing to explain at that level.
Last edited by stomp; 09-22-2019 at 06:18 PM..
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LEARN ABOUT OPENSOLARIS
eval
eval(1T) Tcl Built-In Commands eval(1T)
__________________________________________________________________________________________________________________________________________________
NAME
eval - Evaluate a Tcl script
SYNOPSIS
eval arg ?arg ...?
_________________________________________________________________
DESCRIPTION
Eval takes one or more arguments, which together comprise a Tcl script containing one or more commands. Eval concatenates all its argu-
ments in the same fashion as the concat command, passes the concatenated string to the Tcl interpreter recursively, and returns the result
of that evaluation (or any error generated by it). Note that the list command quotes sequences of words in such a way that they are not
further expanded by the eval command.
EXAMPLE
This procedure acts in a way that is analogous to the lappend command, except it inserts the argument values at the start of the list in
the variable:
proc lprepend {varName args} {
upvar 1 $varName var
# Ensure that the variable exists and contains a list
lappend var
# Now we insert all the arguments in one go
set var [eval [list linsert $var 0] $args]
}
KEYWORDS
concatenate, evaluate, script
SEE ALSO
catch(1T), concat(1T), error(1T), list(1T), subst(1T), tclvars(1T)
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 eval(1T)