standard error to standard out question Post: 302318805

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1. UNIX for Dummies Questions & Answers

Writing to Standard Error

Hi. I'm working on a project for a class, and there's one part of the project that is confusing me. It's a compression and decompression project, and after we write our code for compression, we need to write to standard error. (1) Size of original file (number of characters read...

2. UNIX for Dummies Questions & Answers

Question from a newbie. How to redirect standard output

I have a program that is sending error text to the console and I need to redirect that output to a log file. I'm brand new to Unix and don't know how to do this. Any direction would be greatly appreciated.

3. 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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[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...

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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...

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Writing to standard error

Hi, I want to redirect the standard output to standard error whenever an error occurs for ex if then echo right else echo wrong fi I want to redirect the wrong to stderror .Adding a line 1>&2 will do that or is additional code to be added.How can i verify whether the output...

7. 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...

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Redirecting standard error issues.

Hello Friends, Good Day. I am trying to redirect a standard error to the bit bucket(/dev/null) but it is not working. Though, it is working fine in redirecting the standard output. Below is the output of my script without any redirection: $ ./CheckVSSLocks.sh...

9. Shell Programming and Scripting

Standard out and standard error

I need to run a cronjob and in the cronjob I execute a script that if there is an error produces standard error so I do /RUNMYSCRIPT 2> mylogfile.log However, if it runs correctly, I don't get a standard error output, I get a standard out output. How do I redirect both standard error and...

10. Shell Programming and Scripting

Handling standard error in condition

Testing this with KSH on RHEL The bellow code works but i can't seem to handle the exit status of the unix command when it fails... i wanted to put something like >/dev/null 2>&1 to manage standard output and standard error but it changes my logic and the code doesn't work cause it doesn't...

LEARN ABOUT FREEBSD

zfsloader

ZFSLOADER(8)						    BSD System Manager's Manual 					      ZFSLOADER(8)

NAME

     zfsloader -- kernel bootstrapping final stage

DESCRIPTION

     zfsloader is an extended variant of loader(8) with added support for booting from ZFS.  This document describes only differences from
     loader(8).

ZFS FEATURES

     zfsloader supports the following format for specifying ZFS filesystems which can be used wherever loader(8) refers to a device specification:

     zfs:pool/filesystem:

     where pool/filesystem is a ZFS filesystem name as described in zfs(8).

     If /etc/fstab does not have an entry for the root filesystem and vfs.root.mountfrom is not set, but currdev refers to a ZFS filesystem, then
     zfsloader will instruct kernel to use that filesystem as the root filesystem.

ZFS COMMAND EXTENSIONS

     lsdev [-v]
	     Lists ZFS pools in addition to disks and partitions.  Adding -v shows more ZFS pool details in a format that resembles zpool status
	     output.

     lszfs filesystem
	     A ZFS extended command that can be used to explore the ZFS filesystem hierarchy in a pool.  Lists the immediate children of the
	     filesystem.  The filesystem hierarchy is rooted at a filesystem with the same name as the pool.

FILES

     /boot/zfsloader  zfsloader itself.

EXAMPLES

     Set the default device used for loading a kernel from a ZFS filesystem:

	   set currdev=zfs:tank/ROOT/knowngood:

SEE ALSO

     gptzfsboot(8), loader(8), zfs(8), zfsboot(8), zfsloader(8), zpool(8)

HISTORY

     The zfsloader first appeared in FreeBSD 7.3.

AUTHORS

     This manual page was written by Andriy Gapon <avg@FreeBSD.org>.

BSD
								September 15, 2014							       BSD

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Writing to Standard Error

Discussion started by: sjung10

2. UNIX for Dummies Questions & Answers

Question from a newbie. How to redirect standard output

Discussion started by: ndemos

3. Shell Programming and Scripting

redirect only the standard error output to mail

Discussion started by: barkath

4. Shell Programming and Scripting

[BASH] redirect standard error and use it inside

Discussion started by: Pescator