11-17-2014
@Don Cragun
I have done some changes in my orginal post and could you please clarify now
In the script we are using in a loop `ls $result`
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Couple of questions as I try to decipher someones code who left...
What would something coded like this do?
IFS=:
grep FIELD1 /Path/Path2/Param.fle | read LBL1 LBL2 USRID EADR SUBJ SERVERNAME CFGTBL DIR
ERR=0
Param.fle contents..
FIELD1:FEI::FIELD2:dATAFIELD BATCH:MAIN SERVER......etc.. (2 Replies)
Discussion started by: NycUnxer
2 Replies
2. Shell Programming and Scripting
Can any body explains the under given lines of code i have difficulties in understanding it,
my $errorlog = "/var/log/controler.log";
&initLanguage($language);
&launchCbox();
sub launchCbox { ... (1 Reply)
Discussion started by: Raheel Hassan
1 Replies
3. Shell Programming and Scripting
I am really new to UNIX and programming in general and so apologies if this thread is a bit simple.
I have searched and found a piece of sample code for a training program I am currently undertaking, but seeing as I am relatively new, I dont completely understand how it works.
Here is the... (1 Reply)
Discussion started by: Makaer
1 Replies
4. UNIX Desktop Questions & Answers
hello all,
May i know what is this "DEBUG_ME $DEBUG_CMD main" doing in the below code. I am confused with alias also "alias DEBUG_ME='#'". Thanks for your help.
set -x
alias DEBUG_ME='#'
if ; then
. /product/apps/informatica/v7/pc/ExtProc/debug.ksh "$1"
fi
# Declaring the... (1 Reply)
Discussion started by: Ariean
1 Replies
5. UNIX for Dummies Questions & Answers
This is the command. Assume file1 exists but file2 does not:
ls file1 file2 >newfile 2>&1
This simply makes a text file with two lines: file1 \n file2 could not be found. What I don't understand is that when you run this command: ls file1 file2 >newfile, it prints "file2 could not be found" to... (1 Reply)
Discussion started by: phunkypants
1 Replies
6. Shell Programming and Scripting
Well, I found myself trying to fix some Perl code (Ive never done any Perl in my life) and I pinpointed the place where the bug could be. But to be sure I have to know what does a few line of code mean:
$files_lim =~ (/^\d*$/)
$files_lim =~ (/^\d*h$/)$files_age =~ s/h//The code where this was... (0 Replies)
Discussion started by: RedSpyder
0 Replies
7. Programming
What is the difference between the two statements below?
A:
$a->{"$fruit"}->{"$color"}->{size} = $size
B:
$size = $a->{"$fruit"}->{"$color"}->{size}
Please assist. Thanks! (0 Replies)
Discussion started by: onlinelearner02
0 Replies
8. Shell Programming and Scripting
Hi,
I need to understand below perl code, can some one advise me.
perl -MDate::Parse -e'BEGIN{$main::now=time;$main::old=(time-60*30)}' -nE'if(/^(\w+\s+\d+\s+\d+:\d+:\d+)/) {$t=str2time $1; $t > $old && $t < $now && print}' (1 Reply)
Discussion started by: learnbash
1 Replies
9. Programming
As the title suggests, I want to better understand the following assembly code:
section .text
global main ; must be declared for linker (gcc)
main: ; tell linker entry point
mov edx, len ; message length
mov ecx, msg ; message to write... (2 Replies)
Discussion started by: Azrael
2 Replies
10. UNIX for Beginners Questions & Answers
Hello... and thanks in advance for reading this or offering me any assistance
I'm trying to understand specific differences between the various login scripts... I understand the differences between interactive vs non-interactive and login vs non-login shells... and that's not where my question... (4 Replies)
Discussion started by: bodisha
4 Replies
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
}
EXAMPLE
Read lines from a channel until we get to the end of the stream, and print them out with a line-number prepended:
set lineCount 0
while {[gets $chan line] >= 0} {
puts "[incr lineCount]: $line"
}
SEE ALSO
break(n), continue(n), for(n), foreach(n)
KEYWORDS
boolean value, loop, test, while
Tcl while(n)