Sponsored Content
Top Forums Shell Programming and Scripting what does echo $$, $? $# mean Post 302227559 by vgersh99 on Thursday 21st of August 2008 12:22:40 PM
Old 08-21-2008
Quote:
Originally Posted by gio001
Hello everyone,
can anyone let me know if there is a way to get the count of elements in a word list that I use for a for loop in the way:
for single_result in $results ; do .......
I know I can increment a counter in my for loop, but would there be a way to know the total number of elements in the list without even starting the loop ?
Hope you can help.
Thanks.
Pls don't 'hijack' threads - start a new thread for any new queries.
Read the rules
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

echo

what is the meaning of this echo $description | wc -m` -ne "1" (0 Replies)
Discussion started by: debasis.mishra
0 Replies

2. UNIX for Dummies Questions & Answers

echo

Is there a way to get echo to make newlines without using any type of quotes? I've done a lot of searches and went into my Linux book to no avail. I'm trying to write five separate lines to a file. I can get echo to accept all five lines like this echo \ \this is line 1\ \this is line 2\ >... (6 Replies)
Discussion started by: Trekker182
6 Replies

3. Shell Programming and Scripting

Difference between using "echo" builtin and /bin/echo

So in my shell i execute: { while true; do echo string; sleep 1; done } | read line This waits one second and returns. But { while true; do /bin/echo string; sleep 1; done } | read line continues to run, and doesn't stop until i kill it explicitly. I have tried this in bash as well as zsh,... (2 Replies)
Discussion started by: ulidtko
2 Replies

4. Shell Programming and Scripting

echo !.

can someone tell me what does this code do? echo !. (2 Replies)
Discussion started by: ryandegreat25
2 Replies

5. UNIX for Dummies Questions & Answers

How to correctly use an echo inside an echo?

Bit of a weird one i suppose, i want to use an echo inside an echo... For example... i have a script that i want to use to take users input and create another script. Inside this script it creates it also needs to use echos... echo "echo "hello"" >$file echo "echo "goodbye"" >$file ... (3 Replies)
Discussion started by: mokachoka
3 Replies

6. Shell Programming and Scripting

Help with echo

Hi Guys, I need to print a value in the same line , But when we use the echo instead the loops (while), the value goes to the next line.. Can you help me in this.. Thanks For your help in advance. (6 Replies)
Discussion started by: mac4rfree
6 Replies

7. Shell Programming and Scripting

With that logic this echoes "echo". Question about echo!

echo `echo ` doesn't echoes anything. And it's logic. But echo `echo `echo ` ` does echoes "echo". What's the logic of it? the `echo `echo ` inside of the whole (first) echo, echoes nothing, so the first echo have to echo nothing but echoes "echo" (too much echoing :P):o (2 Replies)
Discussion started by: hakermania
2 Replies

8. Shell Programming and Scripting

tcsh - understanding difference between "echo string" and "echo string > /dev/stdout"

I came across and unexpected behavior with redirections in tcsh. I know, csh is not best for redirections, but I'd like to understand what is happening here. I have following script (called out_to_streams.csh): #!/bin/tcsh -f echo Redirected to STDOUT > /dev/stdout echo Redirected to... (2 Replies)
Discussion started by: marcink
2 Replies

9. UNIX for Dummies Questions & Answers

echo

Hello, I'm working with ksh. I was working with the echo command That is echo "Today is $date" which would show for example Toady is 7/12/12 which was fine however, know I only recieve the first part of the echo without the date. Today is Could I have edited the echo... (9 Replies)
Discussion started by: JD_Sal
9 Replies

10. UNIX for Dummies Questions & Answers

Difference between echo `ls -l` and echo "`ls -l`" ?

Hi guys, Been messing around with shell programming for a couple of days and I found something that was pretty odd in the behavior of the echo command. Below is an example-: When I type the following in my /home directory from my lxterminal in Debian-: echo "`ls -l`" I get the... (2 Replies)
Discussion started by: sreyan32
2 Replies
CONTINUE(P)						     POSIX Programmer's Manual						       CONTINUE(P)

NAME
continue - continue for, while, or until loop SYNOPSIS
continue [n] DESCRIPTION
The continue utility shall return to the top of the smallest enclosing for, while, or until loop, or to the top of the nth enclosing loop, if n is specified. This involves repeating the condition list of a while or until loop or performing the next assignment of a for loop, and re-executing the loop if appropriate. The value of n is a decimal integer greater than or equal to 1. The default shall be equivalent to n=1. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used. OPTIONS
None. OPERANDS
See the DESCRIPTION. STDIN
Not used. INPUT FILES
None. ENVIRONMENT VARIABLES
None. ASYNCHRONOUS EVENTS
Default. STDOUT
Not used. STDERR
The standard error shall be used only for diagnostic messages. OUTPUT FILES
None. EXTENDED DESCRIPTION
None. EXIT STATUS
0 Successful completion. >0 The n value was not an unsigned decimal integer greater than or equal to 1. CONSEQUENCES OF ERRORS
Default. The following sections are informative. APPLICATION USAGE
None. EXAMPLES
for i in * do if test -d "$i" then continue fi echo ""$i"" is not a directory. done RATIONALE
None. FUTURE DIRECTIONS
None. SEE ALSO
Special Built-In Utilities COPYRIGHT
Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Standard for Information Technol- ogy -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between this version and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html . IEEE
/The Open Group 2003 CONTINUE(P)
All times are GMT -4. The time now is 04:10 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy