08-04-2002
thank you but i think i made a wrong expression
i want to test if a directory is empty.
has nofiles in it
excuse me for the confusion
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
I need your help.
How can I create an empty filename with a specific size, in hp-ux?
Regards,
Mizi (2 Replies)
Discussion started by: Mizi
2 Replies
2. UNIX for Dummies Questions & Answers
hi all:
my solaris FIND does not support
find myFolder -type d -empty
how can i find the empty folders?
thanks! (7 Replies)
Discussion started by: lasse
7 Replies
3. UNIX for Dummies Questions & Answers
Hi All,
I am checking for a empty input file to do some further action , but I am getting exit status 0 in both the cases , for empty and non empty file both.
The value of $? is coming 0 in if part also and else part too.
#!/bin/ksh
if ]; then
echo "data"
# exit 0
echo "$?"
else... (4 Replies)
Discussion started by: mavesum
4 Replies
4. Shell Programming and Scripting
Hi!
How can I run a cicle while one var is not empty?
Or better saying how can I see if the var has something?
thanks (1 Reply)
Discussion started by: ruben.rodrigues
1 Replies
5. Shell Programming and Scripting
Hi,
How can I empty the files of *.txt.... in one command. (6 Replies)
Discussion started by: gsiva
6 Replies
6. Shell Programming and Scripting
how can i use while loop ?
while file is empty do....
if not empty do .....
in bash (1 Reply)
Discussion started by: Trump
1 Replies
7. Shell Programming and Scripting
how to create empty crontab using shell script? (7 Replies)
Discussion started by: crackthehit007
7 Replies
8. Shell Programming and Scripting
Hi All,
I have a piece of perl code in which I DON'T want to delete a file rather empty out the contents, here is the code -
if ( unlink("$opt_b") == 1 ) {
print_log( "$opt_b deleted", 1 );
}else {
print_log( "Could not delete $opt_b:$!", 1 );
... (5 Replies)
Discussion started by: jacki
5 Replies
9. Shell Programming and Scripting
Hi, I need help if I list all the file that determined by user input and if program cannot find file it will display " there no file that you looking for " here is my code but it not working
#!/usr/bin/perl -w
print "Enter Advance Search Function: ";
chomp ($func = <STDIN>);
my @func1 =... (2 Replies)
Discussion started by: guidely
2 Replies
10. Shell Programming and Scripting
Hi there,
I'm just starting out with shell scripting and I'm trying to make a test where the script will basically run yum check-update to find out if the server has any available and if it does it e-mails me but if not it will just stop there.
I have it working if there are actually... (7 Replies)
Discussion started by: Imnewtothis
7 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
}
SEE ALSO
break(n), continue(n), for(n), foreach(n)
KEYWORDS
boolean value, loop, test, while
Tcl while(n)