Background-Process with #>/dev/null

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1. Shell Programming and Scripting

2>/dev/null

Friends have the following problem a search may not find anything which would correct example: ls -ltr *prueba.txt | nawk '{ print $9 }' > Procesar.dat 2>/dev/null When he finds nothing gives me the following error ls: prueba.txt: No such file or directory because 2> / dev / null...

2. Shell Programming and Scripting

Help with /dev/null Please

Hello All and a Happy New year to yous guys. I'm running the below command on my AIX box and it keeps giving me the message that the file doesn't exist. I know the file don't exist, but I don't want to see the error. 2>/dev/null doesn't work. bash-3.00$ ls -l C* | wc -l 2>/dev/null ls:...

3. Shell Programming and Scripting

Redirecting standard out to /dev/null goes to file "/dev/null" instead

I apologize if this question has been answered else where or is too elementary. I ran across a KSH script (long unimportant story) that does this: if ; then CAS_SRC_LOG="/var/log/cas_src.log 2>&1" else CAS_SRC_LOG="/dev/null 2>&1" fithen does this: /usr/bin/echo "heartbeat:...

4. UNIX for Dummies Questions & Answers

/dev/null 2>&1 Versus /dev/null 2>1

How are these two different? They both prevent output and error from being displayed. I don't see the use of the "&" echo "hello" > /dev/null 2>&1 echo "hello" > /dev/null 2>1

5. Shell Programming and Scripting

/dev/null what is the use of it?

when do you use the path /dev/null

6. Shell Programming and Scripting

/dev/null

Hi expert, May I know what is the difference between below cron tab entry ? 0,12 * * * * /abc/myscript.sh > /dev/null 2>&1 0,12 * * * * /abc/myscript.sh

7. Solaris

What is /dev/tty /dev/null and /dev/console

Hi, Anyone can help My solaris 8 system has the following /dev/null , /dev/tty and /dev/console All permission are lrwxrwxrwx Can this be change to a non-world write ?? any impact ??

8. Shell Programming and Scripting

> /dev/null

hello all, In many shell scripts i found '> /dev/null' , i am not able to get this, will any one please explain why we are using this. thanks sudha

9. UNIX for Dummies Questions & Answers

/dev/null

Hi , I am importing some table from /dev/null i dont understand what is /dev/null Sorry i am new to UNIX sam71

10. UNIX for Dummies Questions & Answers

>/dev/null

Maybe it's an stupid question but remeber... I'm Junior.. I use command line to run programs, and some of them gives a lot of information when, for example, you open a window or other actions. That's really bad because my terminal gets full of unwanted messages, so I use "bin file & >/dev/null"...

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wscol

wstring(3C)						   Standard C Library Functions 					       wstring(3C)

NAME

       wstring, wscasecmp, wsncasecmp, wsdup, wscol - Process Code string operations

SYNOPSIS

       #include <widec.h>

       int wscasecmp(const wchar_t *s1, const wchar_t *s2);

       int wsncasecmp(const wchar_t *s1, const wchar_t *s2, int n);

       wchar_t *wsdup(const wchar_t *s);

       int wscol(const wchar_t *s);

DESCRIPTION

       These  functions operate on Process Code strings terminated by wchar_t null characters.	During appending or copying, these routines do not
       check for an overflow condition of the receiving string. In the following, s, s1, and s2 point to Process  Code	strings  terminated  by  a
       wchar_t null.

   wscasecmp(), wsncasecmp()
       The  wscasecmp()  function  compares its arguments, ignoring case, and returns an integer greater than, equal to, or less than 0, depending
       upon whether s1 is lexicographically greater than, equal to, or less than s2. It makes the same comparison but compares at most	n  Process
       Code characters. The four Extended Unix Code (EUC) codesets are ordered from lowest to highest as 0, 2, 3, 1 when characters from different
       codesets are compared.

   wsdup()
       The wsdup() function returns a pointer to a new Process Code string, which is a duplicate of the string pointed to by s. The space for  the
       new string is obtained using malloc(3C). If the new string cannot be created, a null pointer is returned.

   wscol()
       The wscol() function returns the screen display width (in columns) of the Process Code string s.

ATTRIBUTES

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

       +-----------------------------------------------------------+
       |ATTRIBUTE TYPE		      ATTRIBUTE VALUE		   |
       |MT-Level		      MT-Safe			   |
       +-----------------------------------------------------------+

SEE ALSO

       malloc(3C), string(3C), wcstring(3C), attributes(5)

SunOS 5.11							    29 Dec 1996 						       wstring(3C)

Shell Programming and Scripting