Question from a newbie. How to redirect standard output

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1. Red Hat

Command understanding the output file destination in case of standard output!!!!!

I ran the following command. cat abc.c > abc.c I got message the following message from command cat: cat: abc.c : input file is same as the output file How the command came to know of the destination file name as the command is sending output to standard file.

2. UNIX for Dummies Questions & Answers

Redirect Standard Error to /dev/null is not working.

Hello. When I run a .ksh that contains the command below, and there is no file available in the source location the "FILE_NAME_*.CSV not found" error is still being displayed. FILEN=$(ssh ${SOURCE_SERV} "cd ${SOURCE_LOCATION} ;ls ${FILES}") 2> /dev/null. This is interfering with the rest...

3. Shell Programming and Scripting

How redirect standard output to a file

Hi guys, i have a script named purgeErrors.ksh, when i execute this script i need to redirect the output to a log file in the same directory, how can i do that ?? -- Aditya

4. UNIX for Dummies Questions & Answers

Redirect Standard output and standard error into spreadsheet

Hey, I'm completely new at this and I was wondering if there is a way that I would be able to redirect the log files in a directories standard output and standard error into and excel spreadsheet in anyway? Please remember don't use too advanced of terminology as I just started using shell...

5. Shell Programming and Scripting

Redirect standard error to input of other process, 2| ?

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...

6. Shell Programming and Scripting

standard error to standard out question

Hi there how can i get the result of a command to not give me its error. For example, on certain systems the 'zfs' command below is not available, but this is fine becaues I am testing against $? so i dont want to see the message " command not found" Ive tried outputting to /dev/null 2>&1 to no...

7. Programming

Redirect Standard Output Multi-Process

Hi, I'm trying to compile the following code: /************** Begin <test.c> ***************/ /* * Compiled with: gcc -Wall -o test test.c */ #include <stdio.h> #include <unistd.h> int main(void) { printf("I'm process %d, son of %d \n", getpid(), getppid()); ...

8. Shell Programming and Scripting

[BASH] redirect standard error and use it inside

Hi all, Maybe my question is too simple but till now i couldn't figure about a solution :( I have a bash script scheduled in cron: <cron time parameters> my_script.sh > result.log 2>&1 By this way i can have standard output and standard error in my result.log file Now i want my script...

9. Shell Programming and Scripting

redirect only the standard error output to mail

I'm writing a script using file descriptor 2 (std error) to send an email only if the command fails or errors out but the script always emails me irrepective of whether it fails or not. It will not email the /tmp/check.error file output if doesn't error out just the mail with the subject "Cannot...

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redirect standard error into log file

Hi, I am new in shell scripting. Can anyone point out what wrong of below script. If I want the error output to "sqlerror.log" and database pool data output to "bulk_main.dat". Right now, the below script, if successful execute, the data will output to bulk_main.dat && sqlerror.log both...

UNIX for Dummies Questions & Answers