Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: solaris redirection
Operating Systems Solaris solaris redirection Post 302527445 by Perderabo on Friday 3rd of June 2011 10:12:19 AM
Old 06-03-2011
The shell is irrelevant but I will try ksh, sh, and bash...
Code:
$ uname -a
SunOS geo-support1 5.10 Generic_127111-10 sun4u sparc SUNW,Sun-Blade-1000
$ ksh
$ grep -c 'findme' file1 nofile file1 2>&1
file1:0
grep: can't open nofile
file1:0
$ grep -c 'findme' file1 nofile file1 2>&1 | cat
grep: can't open nofile
file1:0
file1:0
$
$
$ ^D
$ sh
$ grep -c 'findme' file1 nofile file1 2>&1 | cat
grep: can't open nofile
file1:0
file1:0
$ $
$ bash
bash-3.00$ grep -c 'findme' file1 nofile file1 2>&1 | cat
grep: can't open nofile
file1:0
file1:0
bash-3.00$

The buffering I talked about is internal to grep. Switching shells has no influence. If it works for you, you must be using a different grep. The behavior of your grep is not guaranteed by any standard and it is not wise to write scripts that depend on it.
 

10 More Discussions You Might Find Interesting

1. Programming

Help with redirection

Here is my problem. I don't know make this redirection thing work. The output file (called output.c) looks like this #include<stdio.h> int main() { int k; int m; print f("%d\n", k); printf("%d\n", m); return 0; } the input file(called input.c) is this #include<stdio.h> int... (2 Replies)
Discussion started by: Shallon1
2 Replies

2. UNIX for Dummies Questions & Answers

stderr redirection

Does anyone know away of redirecting the stderr for a bourne or korn shell script to a file. (5 Replies)
Discussion started by: blakmk
5 Replies

3. Shell Programming and Scripting

redirection stdin

hello all, I need to create a password change utility for a database. I need to gather at the command line the username, password and database sid. I have the program currently doing this. What I would like to do is not have the new password appear on the screen when I do my read command.... (2 Replies)
Discussion started by: whited05
2 Replies

4. Shell Programming and Scripting

redirection

Hi, The code below works, it's a part of a bash shell script that serve to search a pattern $pattern_da_cercare in the files contained in a directory $directory_iniziale. Now the proble is: How can I redirect stderr to a file? PS: so I want to redirect ALL the errors to a file. I tryed... (9 Replies)
Discussion started by: DNAx86
9 Replies

5. UNIX for Dummies Questions & Answers

Help with Redirection

Hi Guys, I m new to UNIX and new to this forum. Was wondering if someone can help me understand redirection (standard input output pipeline etc) for starters, not too sure what this would mean who | sort > sortedfile | pr | lp im starting to understand common commands but when throwing... (2 Replies)
Discussion started by: jmack123
2 Replies

6. Shell Programming and Scripting

I/O redirection

Hello everyone,I'm reading a book and there's code fragment: exec 3>&1 ls -l 2>&1 >&3 3>&- | grep bad 3>&- exec 3>&- It says that the red part of that code does not close fd 3 but the green does close the fd 3.I can't understand that.....Why?Any predicate will be appreciated.:) (18 Replies)
Discussion started by: homeboy
18 Replies

7. Shell Programming and Scripting

Redirection

Hello All, I am using the below script to gather various tools running by the user, we have more than 100 tools running on the server so my challenge is to redirect memory & cpu load to the file with the name of the tool.so am using the below script i am stucking how to redirect to the file... (2 Replies)
Discussion started by: ajaincv
2 Replies

8. UNIX for Dummies Questions & Answers

echo and redirection

I am trying to write a simple script which prints some output, but also saves the same in a logfile. echo hello echo hello >> logfile Is there anyway i Can write single sentence of code and get the same result: ( i am using CSH ) (4 Replies)
Discussion started by: animesharma
4 Replies

9. UNIX for Dummies Questions & Answers

about different redirection

explain the redirections 1>, 2>, 3>, ..... and 1< ,2<,3<..... where we use these things thanks Thread moved from AIX forum (2 Replies)
Discussion started by: tsurendra
2 Replies

10. Solaris

Redirection does not work in Solaris

Hi all, i have been trying to direct o/p of one command to file, but i don get any entries in file but ouptput get displayed on command prompt. I have tried many options but still , it does not work. please guide. here is the command -bash-3.00$ /usr/local/bin/sudo lpstat -p | grep... (2 Replies)
Discussion started by: manalisharmabe
2 Replies

LEARN ABOUT PLAN9

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

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

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)
All times are GMT -4. The time now is 06:20 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy