Hello!
I'm having problems trying to extract the contents of a variable and placing it into a text file. Grateful for any help.
Been trying something along the lines of:
$variable > file.txt
or
`cat < $variable` > file.txt
As you can see I'm a newbie to this :D (2 Replies)
Hi all,
I have a problem here. I have a file and let we take the content of the file is just '32' (only a numeric value in that file). Now I need to assign this numeric value ( value in that file) to a variable. Is that possible? If so, can you plz advice me on this?
Thanks in... (4 Replies)
I may not being doing this description justice, but I'll give it a try.
I created a mailx script; there will be several messages using the same script where the only difference is the content. So I figured I'd make the content of the message a variable retrieved from a separate file. I have five... (5 Replies)
For example, I have a simple text file
note:
this a note
a simple note
a very very simple notewhen I use this command,
temp=$(cat "note.txt")then I echo temp, the result is in one line.
echo $temp
note: this a note a simple note a very very simple noteMy variable doesn't have newline.
How... (7 Replies)
I have a file File1 containing lines like below
apple ${FRUIT}-Color
orange ${FRUIT}-Color
banana ${FRUIT}-Color
Now, in my shell I'm reading the file like below
while read FRUIT DESC; do echo $FRUIT $DESC; done < File1
which outputs -
apple ${FRUIT}-Color
orange ${FRUIT}-Color... (3 Replies)
Hi Gurus,
I need replace multiple files content.
the file name pattern likes currentfile_code_*
the content pattern in the file like text=value
I need replace the content as text=abcde
Thanks in advance (7 Replies)
hi i just cant figure out how can i do this ls -lt > log.txt using $PWD
what i mean is how can i get the ls command content into a file using $PWD variable? :confused: (4 Replies)
I need to make ~96 configure files from a template config file which has hundreds of rows that looks like:
template.config:
#average insert size
avg_ins=1000
......
other information omitted
Those config files are named in sequence from S01.config, S02.config, ... etc
with different... (11 Replies)
Dear all,
I have a "SQL request" in a file: that request include different "host variable" and I would like to substitute the different "host variable" by their respective content before executing the request.
For example:
$ echo $SHELL
/bin/bash
$ cat dae2.txt
DELETE FROM ... (11 Replies)
Team,
I want to change below parameter in all the files in a directory,
Check for HOSTNAME=`hostname`
Change to HOSTNAME=localhost
And I tried below but, its not working ☹
find /tmp -type f -exec sed 's/"HOSTNAME\=\`hostname\`"/"HOSTNAME\=localhost/g'"
Help me if I am missing... (6 Replies)
Discussion started by: natraj005
6 Replies
LEARN ABOUT DEBIAN
pdl2
PDL2(1p) User Contributed Perl Documentation PDL2(1p)NAME
pdl2 - Simple shell (version 2) for PDL
SYNOPSIS
Use PDL interactively:
%> pdl2
pdl> $a = sequence(10) # or any other perl or PDL command
pdl> print "$a = $a
";
$a = [0 1 2 3 4 5 6 7 8 9]
DESCRIPTION
The "pdl2" program, also known as the Perldl2 shell, is a second generation version of the original "perldl" interactive PDL shell. It
attempts to be backward compatible in usage while providing improved features, better support for Perl syntax, and an more easily extended
framework based on the Devel::REPL shell.
If you have Devel::REPL version 1.003011 or later, then "pdl2" will start with full functionality. If Devel::REPL is not installed or
found then "pdl2" will print a warning and run the legacy "perldl" shell command instead.
By default, command lines beginning with the default prompt of either "pdl2" or "perldl" (one of 'pdl> ', 'PDL> ', or 'perldl> ') will have
the prefix string and surrounding whitespace stripped. This allows for easy cut-and-paste from sample PDL shell sessions or other examples
into another PDL shell session.
FUNCTIONS
do_print
Toggle print-by-default on and off (default value: off)
By default, "pdl2" does not print the results of operations since the results can be very large (e.g., a small 640x480 RGBA image is still
more than 1_000_000 elements). However, for experimenting and debugging more complex structures, it helps to see the results of every
operation. The "do_print" routine allows you to toggle between the default "quiet" operation and a full Read, Evaluate, Loop style.
pdl> $a = pdl(3,2)
pdl> do_print
1
pdl> $a = pdl(3,2)
$PDL1 = [3 2];
pdl> do_print
pdl> $a = pdl(3,2)
VARIABLES
$PDL::toolongtoprint
The maximal size pdls to print (defaults to 10000 elements). This is not just a "perldl" or "pdl2" variable but it is something that
is usually needed in an interactive debugging session.
SEE ALSO
perldl, Devel::REPL
perl v5.14.2 2012-05-19 PDL2(1p)