Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: opening a file given as standard input
Top Forums Shell Programming and Scripting opening a file given as standard input Post 302322524 by alyex on Thursday 4th of June 2009 03:28:02 AM
Old 06-04-2009
==========================================
> cat > a.sh
#!/bin/bash

exec 6<&0
exec < a.sh
while read line
do
echo $line
done
exec 0<&6
'ctrl-D'
>
>
> ./a.sh
#!/bin/bash

exec 6<&0
exec < a.sh
while read line
do
echo $line
done
exec 0<&6
==========================================

You could actually search with "redirect stdin" on google.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

standard input

how can i redirect standard input? i dont remember :/, though could you redirec not from a command? i mean, to redirect always stdin and stout (1 Reply)
Discussion started by: Jariya
1 Replies

2. Shell Programming and Scripting

How to copy from standard input

I tried copy the output files from find command into a directory. Example, find / -name core 2>/dev/null | xargs cp???? I have known that we can use xargs to execute command lines from standard input but how to use it in this case. Or I can do something besides xargs. (2 Replies)
Discussion started by: lalelle
2 Replies

3. Shell Programming and Scripting

change standard input ?

Dear... I have a scrpit that contains multiple read command.... when I run the script I have to enter 3 variables so that I can get the output.. but, I dont want to put those 3 inputs manually every time... I want to make a shell that reads the 3 inputs from a file. the script name is... (4 Replies)
Discussion started by: yahyaaa
4 Replies

4. Solaris

standard input

Please give me any example for standard input in Solaris. (6 Replies)
Discussion started by: karman0931
6 Replies

5. Shell Programming and Scripting

Reading Standard Input

Hello, I am new to scripting. How do I read multiple lines from the command line? I know read reads one line, but if I have to read multiple lines, how should I do? Thanks, Prasanna (4 Replies)
Discussion started by: prasanna1157
4 Replies

6. Shell Programming and Scripting

Reading from standard input

So, I am new to shell scripting and have a few problems. I know how to read from standard input but I do not know how to really compare it to say, a character. I am trying to compare it to a character and anything exceeding just a character, the user will get an output message, but the program... (7 Replies)
Discussion started by: Bungkai
7 Replies

7. UNIX for Dummies Questions & Answers

Copying and Renaming file through standard input

Hi Geeks, I am relatively new to Unix. Trying out to achive a shell script by hard learning. Here is my requirment. 1. I have to search for specified strings that are given in .csv file in the directory to find the files for matching strings in the .csv file. 2. If match is found, copy... (1 Reply)
Discussion started by: uunniixxuusseer
1 Replies

8. Shell Programming and Scripting

standard input and cron

I have a program that requires the user to enter input values while it is being run for example in bash ... ... .. echo "Enter your input" read input echo $input ... ... ...I need to schedule this program with crontab, hence a problem, cronjobs run in the background, any ideas on how to... (10 Replies)
Discussion started by: walforum
10 Replies

9. Shell Programming and Scripting

Use the content of a file as standard input

I want to use a content of a file as standard input to a program and dump the output to a file. However, when I try the following code: ./program < input.in > output.out The output.out is empty. So, how can I handle this problem? Thanks in advance! (11 Replies)
Discussion started by: Ray Sun
11 Replies

10. Homework & Coursework Questions

Removing punctuations from file input or standard input

Just started learning Unix and received my first assignment recently. We haven't learned many commands and honestly, I'm stumped. I'd like to receive assistance/guidance/hints. 1. The problem statement, all variables and given/known data: How do I write a shell script that takes in a file or... (4 Replies)
Discussion started by: fozilla
4 Replies

LEARN ABOUT MOJAVE

line

line(1)                                                            User Commands                                                           line(1)

NAME

       line - read one line

SYNOPSIS

       line

DESCRIPTION

       The  line utility copies one line (up to and including a new-line) from the standard input and writes it on the standard output. It returns
       an exit status of 1 on EOF and always prints at least a new-line. It is often used within shell files to read from the user's terminal.

EXIT STATUS

       Exit status is:

       0        Successful completion

       >0       End-of-file on input.

ATTRIBUTES

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE         |      ATTRIBUTE VALUE        |
       +-----------------------------+-----------------------------+
       |Availability                 |SUNWcsu                      |
       +-----------------------------+-----------------------------+

SEE ALSO

       sh(1), read(2), attributes(5)

SunOS 5.10                                                          1 Feb 1995                                                             line(1)
All times are GMT -4. The time now is 03:26 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy