I m new to shell scripting. I did some research and understand that unix treats while and other loops as new shell and hence the variable loose its value outside of the loop.
I found solution for integer variable but in mycase this is a string variable.
here variable loc is a multiline string.
I wish the get the multiline string in variable totalstr this format: string1,string2,string3,string4
But currently it is blank as it looses scope. Can you let me know what should be done ?
I have problem like this :
while loop
1 var=some expression
2 if then
3 Do something
4 oldVar=$var
5 fi
6 done
Then, I am facing error at line number 2, mentioning invalid argument. Can anyone please help me for, How to retain value in oldVar? (4 Replies)
Bourne shell
Solaris
I'm trying to set a flag to perform an action only when data is found. So I initialize the flag with:
X=0
Then I read the data:
if ; then
while read a b c
do
X=1
done < ${inputFile}
fi
The problem is that X will be set to 1 inside the while loop but when... (5 Replies)
gunzip fnam.tar.gz
After this command execution... .gz file no longer exists... and only fnam.tar is present.
Is it possible to retain the tar.gz file after after using the above command
thx in advance. (4 Replies)
Hi all,
I wrote a shell script in which one of the if condition i tried to set few variables and exported them...and when i am out of if condition i wish to run one of my script which uses those variables exported.
But i found that when i am out of the if statement those variables... (5 Replies)
Hi Experts,
I have a 2 GB flat file which have unicode field, some of them are blanks and its size is 4000 character. In the existing system SED command removes the spaces. Because of this field itself....it is taking almost three days to complete the file processing. I removed sed and... (0 Replies)
hi all,
Is there any way to retain file path?
echo "Please enter your old filename"
read a
#user input : /blah/blah1
echo "please enter the new filename"
read b
#user input : dumb
mv $a $b
What i would like to do is for the user to enter just the "filename" for the new filename... (2 Replies)
Hello.
I'm trying to add multiple numbers with varying length and with leading zeroes in it. However, I'm getting the sum (totalHashAccountNumber) without the leading zeroes in it. How do I retain the leading zeroes?
Please pardon the lengthy code.. I'm getting the hash account number from 2... (2 Replies)
use strict;
use warnings;
open (my $fhConditions, "<input1.txt"); #open input file1
open (my $fhConditions1, "<input2.txt");#open input file2
open (my $w1, ">output1");
open (my $w2, ">output2");
our $l = 10;#set a length to be searched for match
our $site="AAGCTT";#pattern to be matched... (1 Reply)
There's an input file(input.txt) which has the following details :
CBA
BA
<Please note the second record has a LEADING WHITESPACE which is VALID>
I am using the following code to read the content of the said file line by line:
while read p ; do
echo "$p"
done < input.txt
This is the... (1 Reply)
Hi All,
I have a requirement where there are 2 files saved on unix directory with names anil_111 and anil_222. I just have to retain the latest file and delete the old file from the directory.
Please help me with the shell script to perform this.
Thanks,
Anil (7 Replies)
Discussion started by: anil029
7 Replies
LEARN ABOUT BSD
break
break(1) User Commands break(1)NAME
break, continue - shell built-in functions to escape from or advance within a controlling while, for, foreach, or until loop
SYNOPSIS
sh
break [n]
continue [n]
csh
break
continue
ksh
*break [n]
*continue [n]
DESCRIPTION
sh
The break utility exits from the enclosing for or while loop, if any. If n is specified, break n levels.
The continue utility resumes the next iteration of the enclosing for or while loop. If n is specified, resume at the n-th enclosing loop.
csh
The break utility resumes execution after the end of the nearest enclosing foreach or while loop. The remaining commands on the current
line are executed. This allows multilevel breaks to be written as a list of break commands, all on one line.
The continue utility continues execution of the next iteration of the nearest enclosing while or foreach loop.
ksh
The break utility exits from the enclosed for, while, until, or select loop, if any. If n is specified, then break n levels. If n is
greater than the number of enclosing loops, the outermost enclosing loop shall be exited.
The continue utility resumes the next iteration of the enclosed for, while, until, or select loop. If n is specified then resume at the n-
th enclosed loop. If n is greater than the number of enclosing loops, the outermost enclosing loop shall be used.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words that follow a command preceded by ** that are in the format of a variable assignment are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign, and also that word splitting and file name genera-
tion are not performed.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), exit(1), ksh(1), sh( 1), attributes(5)SunOS 5.10 17 Jul 2002 break(1)