Hello,
I have the following to remove spaces from beginning and end of a string.
infile=`echo "$infilename" | sed 's/^ *//;s/ *$//`
How do I modify the above code to remove spaces from beginning, end and in the middle of the string also.
ex:
... (4 Replies)
Hello and thx for reading this
I'm using sed to remove only the leading spaces in a file
bash-280R# cat foofile
some text
some text
some text
some text
some text
bash-280R#
bash-280R# sed 's/^ *//' foofile > foofile.use
bash-280R# cat foofile.use
some text
some text
some text... (6 Replies)
seems easy but havent found in other posts...
i want to delete any spaces if found before first occurence of ${AI_RUN}
sed 's/ *\\$\\{AI_RUN\\}/\\$\\{AI_RUN\\}/' $HOME/temp1.dat
i think i'm close but can't put my finger on it. :rolleyes: (6 Replies)
Hello, there. I have a file that's a horrible, horrible mess. (Basically, it's an export from a firewall config.) The people who generated the file didn't think that putting a newline in the middle of a hostname would ever be a problem. It is.
Here's an example of the stuff in the file:
... (2 Replies)
if the answer is obvious, sorry, I'm new here.
anyway, I'm using tr to encrypt with rot-13:
echo `cat $script | tr 'a-zA-Z' 'n-za-mN-ZA-M'` > $script
it works, but it removes any consecutive spaces so that there is just one space between words. I've had this problem before while using sed to... (5 Replies)
Hello. I'm making a (hopefully) simple shell script xml parser that outputs a file I can grep for information. I am writing it because I have yet to find a command line utility that can do this. If you know of one, please just stop now and tell me about it. Even better would be one I can input... (10 Replies)
Hi buddy's
my file are like this:
s.no,name,band,sal
1,"suneel",,10
2,"bargav
sand",,20
30,"
ebdug gil",,4
but i want
s.no,name,band,sal
1,"suneel",,10
2,"bargav sand",,20
30,"ebdug gil",,4
any command or Shell script for this.
please help me it's urgent to implement (33 Replies)
Hi,
I need to correct href portion of the lines to edit out spaces from the line starting with position "<a href=" and ending at "target="
Below are 2 examples of extra space added by the server:
<td width=251 colspan=9 rowspan=22> <font size=2 face="courier"><tt><style>{font:7pt Courier ... (4 Replies)
The following command works echo "some text with spaces" | sh -c 'sed -e 's/t//g''But this doesn't and should echo "some text with spaces" | sh -c 'sed -e 's/ //g''Any ideas? (3 Replies)
Discussion started by: Tribe
3 Replies
LEARN ABOUT DEBIAN
devel::refcount
Devel::Refcount(3pm) User Contributed Perl Documentation Devel::Refcount(3pm)NAME
"Devel::Refcount" - obtain the REFCNT value of a referent
SYNOPSIS
use Devel::Refcount qw( refcount );
my $anon = [];
print "Anon ARRAY $anon has " . refcount($anon) . " reference
";
my $otherref = $anon;
print "Anon ARRAY $anon now has " . refcount($anon) . " references
";
DESCRIPTION
This module provides a single function which obtains the reference count of the object being pointed to by the passed reference value.
FUNCTIONS
$count = refcount($ref)
Returns the reference count of the object being pointed to by $ref.
COMPARISON WITH SvREFCNT
This function differs from "Devel::Peek::SvREFCNT" in that SvREFCNT() gives the reference count of the SV object itself that it is passed,
whereas refcount() gives the count of the object being pointed to. This allows it to give the count of any referent (i.e. ARRAY, HASH,
CODE, GLOB and Regexp types) as well.
Consider the following example program:
use Devel::Peek qw( SvREFCNT );
use Devel::Refcount qw( refcount );
sub printcount
{
my $name = shift;
printf "%30s has SvREFCNT=%d, refcount=%d
",
$name, SvREFCNT($_[0]), refcount($_[0]);
}
my $var = [];
printcount 'Initially, $var', $var;
my $othervar = $var;
printcount 'Before CODE ref, $var', $var;
printcount '$othervar', $othervar;
my $code = sub { undef $var };
printcount 'After CODE ref, $var', $var;
printcount '$othervar', $othervar;
This produces the output
Initially, $var has SvREFCNT=1, refcount=1
Before CODE ref, $var has SvREFCNT=1, refcount=2
$othervar has SvREFCNT=1, refcount=2
After CODE ref, $var has SvREFCNT=2, refcount=2
$othervar has SvREFCNT=1, refcount=2
Here, we see that SvREFCNT() counts the number of references to the SV object passed in as the scalar value - the $var or $othervar
respectively, whereas refcount() counts the number of reference values that point to the referent object - the anonymous ARRAY in this
case.
Before the CODE reference is constructed, both $var and $othervar have SvREFCNT() of 1, as they exist only in the current lexical pad. The
anonymous ARRAY has a refcount() of 2, because both $var and $othervar store a reference to it.
After the CODE reference is constructed, the $var variable now has an SvREFCNT() of 2, because it also appears in the lexical pad for the
new anonymous CODE block.
PURE-PERL FALLBACK
An XS implementation of this function is provided, and is used by default. If the XS library cannot be loaded, a fallback implementation in
pure perl using the "B" module is used instead. This will behave identically, but is much slower.
Rate pp xs
pp 225985/s -- -66%
xs 669570/s 196% --
SEE ALSO
o Test::Refcount - assert reference counts on objects
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2011-11-15 Devel::Refcount(3pm)