12-12-2011
Quote:
Originally Posted by
agama
This is a classic shortcoming with bash.
As satisfying as it may be to blame the universe's problems on BASH, nearly any bourne shell except ksh does this.
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Hello,
I have a problem with my script whereby it does not want to loop.
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hi all, its me again!!! i've requirement like this:
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#!/bin/bash
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4. Shell Programming and Scripting
I've got this problem, if I modify an array in the loop and print it, everything is fine as long as I stay in the loop. But, when I print it outside the loop, nothing happens... How can I solve this problem?
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zgrw@Rain:~$ cat test
asd
123... (4 Replies)
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5. Shell Programming and Scripting
Hi All,
the below is my requirement..
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Hi, I have the following problem that is beyond what I can currently do with bash scripting.
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3 19 LABEL_A
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7. Shell Programming and Scripting
Here's my code:
awk -F '' 'NR==FNR {
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Hi,
another little question...
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Hi there,
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LEARN ABOUT OPENDARWIN
while
while(n) Tcl Built-In Commands while(n)
__________________________________________________________________________________________________________________________________________________
NAME
while - Execute script repeatedly as long as a condition is met
SYNOPSIS
while test body
_________________________________________________________________
DESCRIPTION
The while command evaluates test as an expression (in the same way that expr evaluates its argument). The value of the expression must a
proper boolean value; if it is a true value then body is executed by passing it to the Tcl interpreter. Once body has been executed then
test is evaluated again, and the process repeats until eventually test evaluates to a false boolean value. Continue commands may be exe-
cuted inside body to terminate the current iteration of the loop, and break commands may be executed inside body to cause immediate termi-
nation of the while command. The while command always returns an empty string.
Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the while command starts execut-
ing, which means that variable changes made by the loop body will not be considered in the expression. This is likely to result in an
infinite loop. If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter-
ation), so changes in the variables will be visible. For an example, try the following script with and without the braces around $x<10:
set x 0
while {$x<10} {
puts "x is $x"
incr x
}
SEE ALSO
break(n), continue(n), for(n), foreach(n)
KEYWORDS
boolean value, loop, test, while
Tcl while(n)