Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: Sequential Reading from two file in a loop
Top Forums Shell Programming and Scripting Sequential Reading from two file in a loop Post 303001903 by MadeInGermany on Monday 14th of August 2017 08:38:55 AM
Old 08-14-2017
The shell has builtin output formatting.
With redirection of the while block there is no need to cancel the redirection afterwards
Code:
while read val1 <&3 && read val2 <&4
do
  echo "https://red.com/$val1/$val2"
done 3<file1.txt 4<file2.txt

This User Gave Thanks to MadeInGermany For This Post:
rbatte1
 

10 More Discussions You Might Find Interesting

1. Programming

Reading special characters while converting sequential file to line sequential

We have to convert a sequential file to a 80 char line sequential file (HP UX platform).The sequential file contains special characters. which after conversion of the file to line sequential are getting coverted into "new line" or "tab" and file is getting distorted. Is there any way to read these... (2 Replies)
Discussion started by: Rajeshsu
2 Replies

2. UNIX for Dummies Questions & Answers

How to make a loop base on reading a file?

To make it clearer: I have a file, List.txt List.txt contains: (these are actually splitted files w/c I got from ls command and dump them to the List.txt file) SAMPLEa SAMPLEb SAMPLEc SAMPLEd SAMPLEe SAMPLEf . . . . . And I want to rename these files to have a .dat extension.... (3 Replies)
Discussion started by: JohnBalayo
3 Replies

3. Shell Programming and Scripting

Not access variable outside loop when a reading a file

I am writing a shell script using the korn shell. It seems that I am only able to use local variables within a while loop that is reading a file. (I can't access a variable outside a previously used while loop.) It's been a while since I wrote shell scripts. Here is a sample cat file.txt... (4 Replies)
Discussion started by: ricardo.ludwig
4 Replies

4. AIX

How to pause a while loop while reading from a file

Hi, I am building a script to grep for a string in all the files from a folder and display the results. I am reading the files one by one by placing the names in other file using while loop my code is as below while read inp do chk=`grep -c "$str" $pth/$inp` ... (2 Replies)
Discussion started by: sekhar gajjala
2 Replies

5. UNIX for Advanced & Expert Users

File Status 92 reading a sequential file

Hi. I have a process that execute a Microfocus Cobol. This process read a large sequential file and update or insert in a table Oracle. This process run smoothly in some ocasions but in a file whor have more than 400,000 registers, the cobol program doesn't finish read all the records,... (3 Replies)
Discussion started by: hornam
3 Replies

6. Programming

Tool to simulate non-sequential disk I/O (simulate db file sequential read) in C POSIX

Writing a Tool to simulate non-sequential disk I/O (simulate db file sequential read) in C POSIX I have over the years come across the same issue a couple of times, and it normally is that the read speed on SAN is absolutely atrocious when doing non-sequential I/O to the disks. Problem being of... (7 Replies)
Discussion started by: vrghost
7 Replies

7. Hardware

checking non sequential reading/writing of hard drive

what command check that? Does it depend in the time it take to access the file? (1 Reply)
Discussion started by: programAngel
1 Replies

8. Shell Programming and Scripting

Loop is not reading tabs from the file

Hi, I am on HP-UX and K shell. When I am using while/for loop for reading a file. It is working fine but not reading tabs: Suppose, if the line is: ; ;COMP; ; ; ; then loop is reading as ; ;COMP; ;... (5 Replies)
Discussion started by: ezee
5 Replies

9. Shell Programming and Scripting

reading the values from a file in C Shell for loop

Hi All, I need small help on for loop syntax in C shell. How can we read the values from a file (line by line) through C shell loop. For Ex: $Cat file1 data1 data2 data3 data4 $ I have to print those values in a variable and have to perform some steps... Can anyone help on... (2 Replies)
Discussion started by: raghu.iv85
2 Replies

10. Shell Programming and Scripting

Removing \r and \n during reading file through while loop

Hi, I am writing in a file through cat command. This file will contain the path of file along with filename. e.g. /home/user/folder1/folder2/filename.txt There might be very large number of this path in same file like say 140 when I try to run while command: while read -r file do //command... (8 Replies)
Discussion started by: Pulkit Lall
8 Replies

LEARN ABOUT SUNOS

cvcredir

cvcredir(7D)							      Devices							      cvcredir(7D)

NAME

       cvcredir - virtual console redirection driver

DESCRIPTION

       The  cvcredir  virtual console redirection driver is a STREAMS-based pseudo driver that supports the network console provided on some plat-
       forms. The cvcredir driver interfaces with the virtual console driver cvc(7D), and the  virtual console	daemon,  cvcd(1M).

       The  cvcredir driver receives console output from cvc and passes it to  cvcd. It receives console input from  cvcd and passes it to  cvc.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Architecture		     |Sun    Enterprise     10000  |
       |			     |servers,	 Sun   Fire   15K  |
       |			     |servers			   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcvc.u 		   |
       +-----------------------------+-----------------------------+

SEE ALSO

       cvcd(1M), attributes(5), console(7D), cvc(7D)

       Sun Enterprise 10000 SSP Reference Manual

       Sun System Management Services (SMS) Reference Manual

SunOS 5.10							    15 Sep 2000 						      cvcredir(7D)
All times are GMT -4. The time now is 01:12 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy