Yes, I am aware of the difference. The problem I met is the $x should be changed each loop, but the single quote of the command parameter escaped the $ sign of $x. Maybe I should ask like this:
Is there away to get output from the single quotes expression as the double quoted one? i.e.
I cannot change the single quote as it has been set by the package. Thanks again!
Hi all,
I'm trying to define an alias with an embeded awk command:
alias kpipe='kill `psme| grep "ifw -r" | grep -v "grep ifw -r"| awk '{print $2}'`'
The problem is that the awk command (awk '{print $2}') contains two ' ..' quotes. So bash assumes that the first awk quote corresponds to... (5 Replies)
I want to instert Category:XXXXX into the 2. line
something like this should work, but I have somewhere the wrong sytanx. something with the linebreak goes wrong:
sed "2i\\${n}Category:$cat\n"
Sample:
Titel Blahh Blahh abllk sdhsd sjdhf
Blahh Blah Blahh
Blahh
Should look like... (2 Replies)
I have a small doubt that, how to chomp the new line from the bash shell variable value.
In perl, i will do chomp, but how to do it in bash -- shell programming.
When i redirect the date output i have a new line in it, which i would want to remove, how to do ?! (5 Replies)
i have this script that reads a file "listall_101111" where 101111 varies.
awk '{print $0,$1}' listall_101111 | sed -e 's/\(.*\).$/\1/g' | awk '{print $6,$2,$3,$4,$5}' | sort -nrk5 | nawk 'NR==1{m=$5;a++;b=(b)?b:$0;next}$5==m{a++;b=(b)?b:$0}END{for (i in a){print b,a}}' | grep -v ^LG | sort... (4 Replies)
Hi,
I am trying to do the following thing
var='date'
$var
Above command substitutes date for and in turn runs the date command and i am getting the todays date value.
I am trying to do the same thing as following, but facing some problems,
unique_host_pro="sed -e ' /#/d'... (3 Replies)
I am working with a sh script on a solaris 9 zone (sol 10 host) that grabs information to build the configuration command line. the variables Build64, SSLopt, CONFIGopt, and CC are populated in the script. the script includes
CC=`which gcc`
CONFIGopt=' --prefix=/ --exec-prefix=/usr... (8 Replies)
Hi,
I would like to use a shell variable $amp in my perl command line.
for fa in $WORKSPACE/*.fa; do
amp=`grep ">.*" $fa | sed -e's#>\(.*\)#\1#g'`
ampsam="$WORKSPACE/$base/$base.$amp.sam"
sqheader=`grep "^@SQ.*SN:$amp.*" $sam`
printf "$sqheader\n" >> $ampsam
... (3 Replies)
Hi,
I have some 2000 names in a table like below.
Java
Oracle/SQL
ANSI SQL
SQL,DWH,DB
DB&Java
And by using for loop in my code i am able to get a single word but if there is any special character or space then it is considering as a next line.
I have to execute the below queries in... (10 Replies)
Perl::Critic::Policy::ValuesAndExpressions::ProhibitInteUseraContrPerl::Critic::Policy::ValuesAndExpressions::ProhibitInterpolationOfLiterals(3pm)NAME
Perl::Critic::Policy::ValuesAndExpressions::ProhibitInterpolationOfLiterals - Always use single quotes for literal strings.
AFFILIATION
This Policy is part of the core Perl::Critic distribution.
DESCRIPTION
Don't use double-quotes or "qq//" if your string doesn't require interpolation. This saves the interpreter a bit of work and it lets the
reader know that you really did intend the string to be literal.
print "foobar"; #not ok
print 'foobar'; #ok
print qq/foobar/; #not ok
print q/foobar/; #ok
print "$foobar"; #ok
print "foobar
"; #ok
print qq/$foobar/; #ok
print qq/foobar
/; #ok
print qq{$foobar}; #preferred
print qq{foobar
}; #preferred
Use of double-quotes might be reasonable if the string contains single quote (') characters:
print "it's me"; # ok, if configuration flag set
CONFIGURATION
The types of quoting styles to exempt from this policy can be configured via the "allow" option. This must be a whitespace-delimited
combination of some or all of the following styles: "qq{}", "qq()", "qq[]", and "qq//".
This is useful because some folks have configured their editor to apply special syntax highlighting within certain styles of quotes. For
example, you can tweak "vim" to use SQL highlighting for everything that appears within "qq{}" or "qq[]" quotes. But if those strings are
literal, Perl::Critic will complain. To prevent this, put the following in your .perlcriticrc file:
[ValuesAndExpressions::ProhibitInterpolationOfLiterals]
allow = qq{} qq[]
The flag "allow_if_string_contains_single_quote" permits double-quoted strings if the string contains a single quote (') character. It
defaults to off; to turn it on put the following in your .perlcriticrc file:
[ValuesAndExpressions::ProhibitInterpolationOfLiterals]
allow_if_string_contains_single_quote = 1
SEE ALSO
Perl::Critic::Policy::ValuesAndExpressions::RequireInterpolationOfMetachars
AUTHOR
Jeffrey Ryan Thalhammer <jeff@imaginative-software.com>
COPYRIGHT
Copyright (c) 2005-2011 Imaginative Software Systems. All rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The full text of this license
can be found in the LICENSE file included with this module.
perl v5.14.2Perl::Critic::Policy::ValuesAndExpressions::ProhibitInterpolationOfLiterals(3pm)