Login or Register to Ask a Question and Join Our Community


Shell Programming and Scripting

How to print variable value using file.

Login to Discuss or Reply to this Discussion in Our Community

 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting How to print variable value using file.
# 1  
Old 10-29-2009
How to print variable value using file.
I have defined variable in linux using command #year=twenty
Now i want to use CGI script to print this value.
how can i do so?
quick response will be highly appreciated.
# 2  
Old 10-29-2009
Code:
unless ( open FIN, "variable.txt" ){
  print "cannot read file: variable.txt\n";
  return;
  }

$line = <FIN>;
chomp $line;
close FIN;

( $junk, $value ) = split( /\=/, $line );

print "VALUE: $value \n";

# 3  
Old 10-29-2009
Here can you help me with your parameters that you have used in context to my query?
# 4  
Old 10-29-2009
well.... you have to store the variable you want in a file somewhere.

when you say "CGI", I'm assuming you mean through apache and perl.

So you write your "#year=value" in a file somewhere.
Make sure that "world" has read access to this file.

What I wrote goes into a script that apache accesses:

http://myserver.com/cgi-bin/quirks.pl

something like that....
# 5  
Old 10-29-2009
No, i haven't defined variable in CGI script, i am using perl and executing script in Linux.
i want to print variable which i have defined at command line using CGI script.
# 6  
Old 10-29-2009
oh...

Code:
$num = 0;
for $arg in ( @ARGV ){
  $num++;
  print "arg[$num]: $arg \n";
  }

In an odd perl quirk, the command itself is: $0
# 7  
Old 10-30-2009
Hi quirkasaurus, Thanks for your reply, but i haven't understood what you are trying to say here, if you will try to explain it to me with consideration of my variables it will help me since i am a beginner to unix & CGI scripting.

THanks in advance.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to print contents of file when the file path is in a variable?

The file f1 contains the text "body" (shell prompt is "$"): $ cat ~/path/f1 body How to print contents of f1 when the f1 path is in a variable? Here is my failed attempt: $ f1="~/path/f1" $ echo $f1 ~/path/f1 $ cat $f1 cat: '~/path/f1': No such file or directory (2 Replies)
Discussion started by: wolfv
2 Replies

2. Shell Programming and Scripting

awk to lookup stored variable in file and print matching line

The bash bash below extracts the oldest folder from a directory and stores it in filename That result will match a line in bold in input. In the matching line there is an_xxx digit in italics that (once the leading zero is removed) will match a line in link. That is the lint to print in output.... (2 Replies)
Discussion started by: cmccabe
2 Replies

3. Shell Programming and Scripting

To print value for a $variable inside a $variable or file

Hi guys, I have a file "abc.dat" in below format: FILE_PATH||||$F_PATH TABLE_LIST||||a|b|c SYST_NM||||${SRC_SYST} Now I am trying to read the above file and want to print the value for above dollar variables F_PATH and SRC_SYST. The problem is it's reading the dollar variables as... (5 Replies)
Discussion started by: abcabc1103
5 Replies

4. Shell Programming and Scripting

awk print variable then fields in variable

i have this variable: varT="1--2--3--5" i want to use awk to print field 3 from this variable. i dont want to do the "echo $varT". but here's my awk code: awk -v valA="$varT" "BEGIN {print valA}" this prints the entire line. i feel like i'm so close to getting what i want. i... (4 Replies)
Discussion started by: SkySmart
4 Replies

5. Shell Programming and Scripting

awk print using a variable

hey, just want to ask how to do this. ex. g="hi i am john" h=`echo $g | awk '{print $2}'` echo $h OUTPUT is 'i' What if I want to use a variable instead of using '2', how do I do that? Because this one does not work: a=2 h=`echo $g | awk '{print ${$a}}'` this one also does not... (3 Replies)
Discussion started by: h0ujun
3 Replies

6. Shell Programming and Scripting

awk print variable

I have list of files: ls a.pdf b.pdf c.pdf and so on... and I have a file like this: cat file1 apple mango pear and so on... I want to rename my file like this: (7 Replies)
Discussion started by: zorrox
7 Replies

7. Shell Programming and Scripting

Print arguments with the help of variable

Let's say I want to print the arguments $4 till $#, how can I do this? $# contains the number of arguments $@ contain all the arguments as string What i need is something like for i in $4_till_$#; do #do something with $i convert $i ~/$output done The first 3 arguments are used as options... (6 Replies)
Discussion started by: hakermania
6 Replies

8. Shell Programming and Scripting

awk print redirection to variable file name

Hello, i need to redirect the output of print to a variable file name: #This is normal awk '{ print $17 > "output.txt" }' input #I need something like this awk '{ print $17 > "output_${25}.txt" }' input how to format the output file name to contain a variable? (6 Replies)
Discussion started by: nazeeb
6 Replies

9. Shell Programming and Scripting

print variable in file using awk

hi, i have store variable in $var i want to print it in $3 of file using awk. how can i do it? file : var1,var2,var3 var5,var6,var7 var8,var9,var10 . . . i want to print $var in $3 ( for example var3 or var7 or var10) thanks (3 Replies)
Discussion started by: kamel.seg
3 Replies

10. Shell Programming and Scripting

print the name of variable

How can I pass the name of the variable inside a for statment I have a script something like below: classA=12 classB=14 classC=16 # classD = 20 all_class="classA classB classC" for i in $all_class do echo $i = $($i) #<---- this one not work #echo $i = $(echo $i) ... (1 Reply)
Discussion started by: sun-guy
1 Replies
Login or Register to Ask a Question