Hi all-
I've been fooling with this for a few days, but I'm rather new at this...
I have a bash variable containing a long string of various characters, for instance:
JUNK=this that the other xyz 1234 56 789
I don't know what "xyz" actually is, but I know that:
START=he other
and ... (2 Replies)
Can I use my own variables within awk and sed for example:
I've written a while loop with a counter $i and I want to use the value of $i within sed and awk to edit certain lines of text within a data file.
I want to use :
sed '1s/$/texthere/g' data.csv
Like this:
sed '$is/$/$age/g' data.csv... (5 Replies)
Hi Guys,
Is there a simple way of doing the below.
Available<spaces>Assigned<spaces>Maximum<spaces>Maximum<spaces>Page<spaces>Total <spaces>Used<spaces>Pct<spaces>Max. Pct<CR>
Space<spaces>Capacity<spaces>Extension<spaces>Reduction<spaces>Size<spaces>... (8 Replies)
So that they can be used in a cgi script? How best to do this? Thanks
---------- Post updated at 06:24 PM ---------- Previous update was at 02:38 AM ----------
Anyone that can help me with this?
Basically I want to add an environment variable that will be visible to the cgi scripts when I... (0 Replies)
I am trying to print text between two variables in a file
I have tried the following things but none seem to work:
awk ' /'$a'/ {flag=1;next} /'$b'/{flag=0} flag { print }' file
and also
sed "/$a/,/$b/p" file
But none seem to work
Any Ideas?
Thanks in Advance (5 Replies)
Hi forum, I am really hoping somebody can please help me here.
I have a dataset in xyz format, with longitude as x, latitude as y and data readings as z.
eg.
0 90 -8
1 90 23
2 90 -4
etc etc etc
What i am looking to do is format the data so that x and y are untouched, however in... (2 Replies)
I am wondering if there is away to increment a date in c shell. What I need to do is basic, but I lack the knowledge.
I have they following environmental variable in my job scripts
setenv YYYY `date '+%Y'`
I then set YYYY to be part of my output dataset name:
setenv dd_OUTPUTP... (1 Reply)
Hello,
I know this should be simple but cant find a solution yet.I have the following in a sh script called "var"
#!/bin/bash
var1=0
And on another script called "main" I use a if construct:
#!/bin/bash
. var
if
then
Do this
else
do that
fi
Now in "do this" part,I have to change... (8 Replies)
Hi,
After looking at the differents post on this forum, I am convinced that I will benefit from the experience of advanced Unix user on some script I have already done for an aeronautical study. Here is one of them :
Step 1 :
sed -e "s/??/00/g" Base_Awk.txt > Awk_Cut_00.txt4;
sed... (11 Replies)
Hi,
I have a file(testfile.txt) that contains list of variables as shown below. T
$$FirstName=James
$$LastName=Fox
$$Dateofbirth=1980-02-04
……and so on there are 50 different variables.
I am writing a script(script1.sh) that will update the above three variable one by one with the values... (6 Replies)
Discussion started by: Saanvi1
6 Replies
LEARN ABOUT MOJAVE
bytes5.18
bytes(3pm) Perl Programmers Reference Guide bytes(3pm)NAME
bytes - Perl pragma to force byte semantics rather than character semantics
NOTICE
This pragma reflects early attempts to incorporate Unicode into perl and has since been superseded. It breaks encapsulation (i.e. it
exposes the innards of how the perl executable currently happens to store a string), and use of this module for anything other than
debugging purposes is strongly discouraged. If you feel that the functions here within might be useful for your application, this possibly
indicates a mismatch between your mental model of Perl Unicode and the current reality. In that case, you may wish to read some of the perl
Unicode documentation: perluniintro, perlunitut, perlunifaq and perlunicode.
SYNOPSIS
use bytes;
... chr(...); # or bytes::chr
... index(...); # or bytes::index
... length(...); # or bytes::length
... ord(...); # or bytes::ord
... rindex(...); # or bytes::rindex
... substr(...); # or bytes::substr
no bytes;
DESCRIPTION
The "use bytes" pragma disables character semantics for the rest of the lexical scope in which it appears. "no bytes" can be used to
reverse the effect of "use bytes" within the current lexical scope.
Perl normally assumes character semantics in the presence of character data (i.e. data that has come from a source that has been marked as
being of a particular character encoding). When "use bytes" is in effect, the encoding is temporarily ignored, and each string is treated
as a series of bytes.
As an example, when Perl sees "$x = chr(400)", it encodes the character in UTF-8 and stores it in $x. Then it is marked as character data,
so, for instance, "length $x" returns 1. However, in the scope of the "bytes" pragma, $x is treated as a series of bytes - the bytes that
make up the UTF8 encoding - and "length $x" returns 2:
$x = chr(400);
print "Length is ", length $x, "
"; # "Length is 1"
printf "Contents are %vd
", $x; # "Contents are 400"
{
use bytes; # or "require bytes; bytes::length()"
print "Length is ", length $x, "
"; # "Length is 2"
printf "Contents are %vd
", $x; # "Contents are 198.144"
}
chr(), ord(), substr(), index() and rindex() behave similarly.
For more on the implications and differences between character semantics and byte semantics, see perluniintro and perlunicode.
LIMITATIONS
bytes::substr() does not work as an lvalue().
SEE ALSO
perluniintro, perlunicode, utf8
perl v5.18.2 2013-11-04 bytes(3pm)