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[ask]awk in csh to extract content from file

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Top Forums Shell Programming and Scripting [ask]awk in csh to extract content from file
# 8  
Old 07-28-2011
test --> inputfile

> test.var ---> redirecting the output to another file ( test.var )

&& --> executes once the previous command is success
Bash Reference Manual

Code:
 
eg: 
echo "hello" && echo "echo hello is executed successfully" || echo "echo hello failed"
echho "hello" && echo "echo hello is executed successfully" || echo "echo hello failed"

. --> means dot operator or source operator source or dot operator MAN Page
This User Gave Thanks to itkamaraj For This Post:
animesharma
# 9  
Old 07-28-2011
@itkamaraj
thanks for reply

I was actually confused with the last part (in bold)
Code:
test.var && . test.var

Is it a typing mistake? coz without the bold part my code is executed successfully.

also..
Code:
echo $ani

if i write the above echo after the awk statement, i get an "undefined variable" error. Smilie
# 10  
Old 07-28-2011
seach for "source or dot operator"

Its not typing mistake.

and read about the && and || operator
This User Gave Thanks to itkamaraj For This Post:
animesharma
# 11  
Old 07-28-2011
Thanks, I had never come across dot operator before.
It is available in c shell?

---------- Post updated at 12:45 PM ---------- Previous update was at 11:47 AM ----------

@itkamaraj
It seems dot operator is not available in csh or tcsh Smilie . My work is on either of both shell. can you suggest some csh/tcsh equivalent.

the problem i am facing is..i cant generate and use the variables as i wish to.


My objective is explained below:

Consider I have a simple text file as below
file1
Code:
s1 a1
s2 a2 b2
s3 a3 b3 c3

The file's content (with fixed format as above) can be added by any user.
I need to write a script to automatically generate and use following variables
s1,a1,s2,a2,b2,s3,a3,b3,c4,...

The variables list will depend on entries of file1.
# 12  
Old 07-28-2011
What is mean by dot operator not available ?
Did u go through the source command ?
Did u read the links which i provided ?
This User Gave Thanks to itkamaraj For This Post:
animesharma
# 13  
Old 07-28-2011
let me show here what i am doing:

this is the code i am running

filename: nscript
Code:
#
echo "-------------------------------"

awk '{for(i=1;i<=NF;i++)printf("%s=%s\n",$i,$i)}' script_name.txt  > script_name.var && . script_name.var
###########################################################

echo "a1 is ---> $a1"
#a1 = $2
echo $a2

###########################################################

in command prompt when i type
Code:
$ bash ./nscript

i get following output
Code:
-------------------------------
a1 is ---> a1
a2

but when i type
Code:
$ csh ./nscript

I get following output
Code:
-------------------------------
/bin/.: Permission denied.
a1: Undefined variable.

since i am new to unix, am not able to understand why I am getting such error.
I googled and came across a pdf telling dot operator is not supported in csh/tcsh.
The problem, i think is that we have a code which is interpreted ok with bash, but not in csh.

---------- Post updated at 01:46 PM ---------- Previous update was at 01:37 PM ----------

also if i run the nscript with following changes
Code:
awk '{for(i=1;i<=NF;i++)printf("%s=%s\n",$i,$i)}' script_name.txt  > script_name.var && source script_name.var

i get the following results
Code:
-------------------------------
script_B_1=script_B_1: Command not found.
a1=a1: Command not found.
script_B_2=script_B_2: Command not found.
a2=a2: Command not found.
b2=b2: Command not found.
script_B_3=script_B_3: Command not found.
a3=a3: Command not found.
b3=b3: Command not found.
c3=c3: Command not found.
a1: Undefined variable.

---------- Post updated at 01:55 PM ---------- Previous update was at 01:46 PM ----------

hey.. its working, with following modifications SmilieSmilieSmilie

Code:
awk '{for(i=1;i<=NF;i++)printf("set %s=%s\n",$i,$i)}' script_name.txt  > script_name.var && source script_name.var
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