Sponsored Content
Top Forums Shell Programming and Scripting Reading of variable in a single line command Post 302757641 by padi on Thursday 17th of January 2013 10:21:32 PM
Old 01-17-2013
Reading of variable in a single line command

Hi All,

Below is a sample command that I can run without any problem in the command line.

Command Line
HTML Code:
dtToday=`date +%Y%m%d`; ls -ltr ./filename_${dtToday}.txt
-rw-r--r--  1 monuser oinstall 0 Jan 18 11:02 ./filename_20130118.txt
But once I put that command line in file (list.txt) and read from it, an error occurs. Pls. see below the code:

HTML Code:
cat ./list.txt|while read xLine
do
echo "`echo $xLine | awk -F \"|\" '{print $2}'`"
echo "========="
`echo $xLine | awk -F "|" '{print $2}'`
done

==========
[B]Result:[/B]

dtToday=`date +%Y%m%d`; ls -ltr ./filename_${dtToday}.txt
=========
./j.sh: line 6: dtToday=`date: command not found

The list.txt contains the line below:
HTML Code:
SomeText|dtToday=`date +%Y%m%d`; ls -ltr ./filename_${dtToday}.txt
Need help badly to resolve this issue. Thanks in advance.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

reading a single line

hello, i need an algorithm which reads a line specified to it in shortest possible time. i am already using sed, i need a better way. please suggest me alternatives (2 Replies)
Discussion started by: rochitsharma
2 Replies

2. Shell Programming and Scripting

Reading Multiple Variables From a Single Line in Shell

I'm a Linux newb, I've been running a Debian Linux server for about a year now, and I've written some simple scripts to automate various things, but I still don't know much, and I forget what I learn as fast as I figure it out... Anyway, that really isn't important, I just want you to know that... (14 Replies)
Discussion started by: Drek
14 Replies

3. UNIX for Dummies Questions & Answers

reading a line into a variable in unix

hi... i need to open a file and read it line by line, and capture that it in to some variable and manipulate... i need to get a line in to a variable please help :confused: (1 Reply)
Discussion started by: lmadhuri
1 Replies

4. Shell Programming and Scripting

reading the whole line from a file into a variable

Hi, I am doing : while read line do printf "%s\n" ${line} done <datafile.txt but I am not getting each single line from the data file assigned to the variable line (but only tokens/fields at a time). I also tried while IFS= read -r lineI want the whole line assigned or read into the... (2 Replies)
Discussion started by: shri_nath
2 Replies

5. Shell Programming and Scripting

Reading a single character from each line of the file

Hi, I should read one character at a fixed position from each line of the file. So how ??? should be substituted in the code below: while read line ; do single_char=`???` echo "$single_char" done < $input_file (8 Replies)
Discussion started by: arsii
8 Replies

6. Shell Programming and Scripting

How to avoid the truncating of multiple spaces into a single space while reading a line from a file?

consider the small piece of code while read line do echo $line done < example content of example file sadasdasdasdsa erwerewrwr ergdgdfgf rgerg erwererwr the output is like sadasdasdasdsa erwerewrwr ergdgdfgf rgerg erwererwr the... (4 Replies)
Discussion started by: Kesavan
4 Replies

7. Shell Programming and Scripting

Input two variable on single line

Can we input two variable on single line that separate by space example user input "list jpg" it will list all jpg files in current directory (3 Replies)
Discussion started by: guidely
3 Replies

8. UNIX for Dummies Questions & Answers

Parsing file, reading each line to variable, evaluating date/time stamp of each line

So, the beginning of my script will cat & grep a file with the output directed to a new file. The data I have in this file needs to be parsed, read and evaluated. Basically, I need to identify the latest date/time stamp and then calculate whether or not it is within 15 minutes of the current... (1 Reply)
Discussion started by: hynesward
1 Replies

9. Shell Programming and Scripting

Passing Command Line Args in a Single Variable?

Hello All, I have a Bash Script and an Expect script that together will SSH to another server and do some stuff there... From within the Bash Script I process the Command Line Arguments, which are Required Args and Optional Args. When I call the Expect script from the Bash Script, I pass... (4 Replies)
Discussion started by: mrm5102
4 Replies

10. Shell Programming and Scripting

Reading text file, comparing a value in a line, and placing only part of the line in a variable?

I need some help. I would like to read in a text file. Take a variable such as ROW-D-01, compare it to what's in one line in the text file such as PROD/VM/ROW-D-01 and only input PROD/VM into a variable without the /ROW-D-01. Is this possible? any help is appreciated. (2 Replies)
Discussion started by: xChristopher
2 Replies
FPRINTF(3)								 1								FPRINTF(3)

fprintf - Write a formatted string to a stream

SYNOPSIS
int fprintf (resource $handle, string $format, [mixed $args], [mixed $...]) DESCRIPTION
Write a string produced according to $format to the stream resource specified by $handle. PARAMETERS
o $handle -A file system pointer resource that is typically created using fopen(3). o $format - See sprintf(3) for a description of $format. o $args - o $... - RETURN VALUES
Returns the length of the string written. EXAMPLES
Example #1 fprintf(3): zero-padded integers <?php if (!($fp = fopen('date.txt', 'w'))) { return; } fprintf($fp, "%04d-%02d-%02d", $year, $month, $day); // will write the formatted ISO date to date.txt ?> Example #2 fprintf(3): formatting currency <?php if (!($fp = fopen('currency.txt', 'w'))) { return; } $money1 = 68.75; $money2 = 54.35; $money = $money1 + $money2; // echo $money will output "123.1"; $len = fprintf($fp, '%01.2f', $money); // will write "123.10" to currency.txt echo "wrote $len bytes to currency.txt"; // use the return value of fprintf to determine how many bytes we wrote ?> SEE ALSO
printf(3), sprintf(3), sscanf(3), fscanf(3), vsprintf(3), number_format(3). PHP Documentation Group FPRINTF(3)
All times are GMT -4. The time now is 10:42 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy