10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi,
I want to compare a value from test file and redirect the o/p value to the same file
input file
250 32000 32 128
Below is my code
awk '{ if ($1 < "300") print $1 > /tmp/test}' test
want to compare 250 < 300 then print 300 to the same place
below is the... (24 Replies)
Discussion started by: stew
24 Replies
2. Shell Programming and Scripting
Suppose I have a program that I've written that accepts input, ie this C++ program:
#include <iostream>
using namespace std;
int main()
{
cout << "Enter something:" << endl;
int x;
cin >> x;
cout << "You entered data" << endl;
}
Suppose that I have a text file,... (5 Replies)
Discussion started by: Chris J
5 Replies
3. Shell Programming and Scripting
I have a script that is working when I input parameters from the command line. I was under the assumption that i could use a redirect for the input.
script fred.sh:
value1=$1
value2=$2
print $value1 $value2
Running from command line:
fred.sh 1 2 1 2
Contents of file fred.txt:... (3 Replies)
Discussion started by: djm2112
3 Replies
4. Shell Programming and Scripting
I'm trying to run the logic below but get a `<' is not matched error message when I return a Y or y;
printf "Run this ? : "
read RESP
case $RESP in
Y|y)
cat <<EOF > file
today is Monday
EOF ;;
N|n)
exit 1 ;;
esac
Any ideas? (2 Replies)
Discussion started by: h8mmer
2 Replies
5. UNIX for Advanced & Expert Users
Hi All,
Sorry if the title is not good but I did not know how to explain with only some words!
What I meant is: I have a unix command built from a private application vendor that when executed it prompts for two entries by the keyboard, let's say, for example:
... (1 Reply)
Discussion started by: felipe.vinturin
1 Replies
6. Programming
Dear All:
I am trying to do something that (I thought) was relatively straightforward, but my code snippet does not seem to work.
Any suggestions?
Thank you
Sincerely yours
Misha Koshelev
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include... (0 Replies)
Discussion started by: misha680
0 Replies
7. Shell Programming and Scripting
I have a program that runs like "cat f1 - f2 -", I need to write shell script to run the program whose standard input will be redirected from 2 files. I spend a whole day on it, but didn't figure out. Can someone help me out? Thanks! (8 Replies)
Discussion started by: microstarwwx
8 Replies
8. Shell Programming and Scripting
Hello,
I would like to know if there is a shell in which operations such as 2| (redirect standard error of one process to the standard input of another one) exist?
I know it is possible to do it in bash with things like:
(process 2>&1) | other_process
but I find it a bit intricate when... (3 Replies)
Discussion started by: chlorine
3 Replies
9. UNIX for Dummies Questions & Answers
I need to run a command inside root-environment, and want to use:
su - root -c "some command..."
Then I am prompted for a password, of course.
Is it possible to put this password in a file, and present this files content, to the command above?:confused: (1 Reply)
Discussion started by: bjornrud
1 Replies
10. UNIX for Dummies Questions & Answers
I have a program that is reading strings into a vector from a file. Currently I am using this command:
a.out < file1
The program runs and prints the contents of the vector to the screen, like its supposed to. The problem is that it needs to read in 3 files to fill the vector. Is there anyway... (4 Replies)
Discussion started by: Matrix_Prime
4 Replies