03-07-2011
The one without the ampersand will write the output of standard error into a file named "1". Probably not what's intended.
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1. UNIX for Dummies Questions & Answers
Hi,
suppose you have the following line at your crontab :
5 * * * * /usr/mine/script > /dev/null 2>&1
now i understood that the " > /dev/null 2>&1 outputs both Standard outpout and Standard Error messages to the /dev/null device or file...
the first part , " > /dev/null " transfers... (1 Reply)
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Hi ,
I am importing some table from /dev/null i dont understand what is /dev/null
Sorry i am new to UNIX
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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
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Hi, Anyone can help
My solaris 8 system has the following
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All permission are lrwxrwxrwx
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Hi,
I am new into UNIX shell scripting and I am wondering what is the meaning of the below text which appears at the end of each line in the ".sh" file:
> /dev/null 2>&1
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Does >/dev/null 2>&1 and 2>&1 >/dev/null mean the same? (4 Replies)
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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:
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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
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Hello
Can I just remove/delete flile ?
rw-r--r-- 1 root system 2385088512 Jun 30 21:25 /dev/null 2>&1
size of this flile is 2274.75 m and fill up my filesystem:
Filesystem MB blocks Used Free %Used Mounted on
/dev/hd4 2560.00 2558.59 1.41 100% / (10 Replies)
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Hello,
Does anyone know how to housekeeping the null 2>&1 file in /dev?
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LEARN ABOUT LINUX
fdformat
FDFORMAT(8) Linux Programmer's Manual FDFORMAT(8)
NAME
fdformat - Low-level formats a floppy disk
SYNOPSIS
fdformat [-n] device
DESCRIPTION
fdformat does a low level format on a floppy disk. device is usually one of the following (for floppy devices, the major = 2, and the
minor is shown for informational purposes only):
/dev/fd0d360 (minor = 4)
/dev/fd0h1200 (minor = 8)
/dev/fd0D360 (minor = 12)
/dev/fd0H360 (minor = 12)
/dev/fd0D720 (minor = 16)
/dev/fd0H720 (minor = 16)
/dev/fd0h360 (minor = 20)
/dev/fd0h720 (minor = 24)
/dev/fd0H1440 (minor = 28)
/dev/fd1d360 (minor = 5)
/dev/fd1h1200 (minor = 9)
/dev/fd1D360 (minor = 13)
/dev/fd1H360 (minor = 13)
/dev/fd1D720 (minor = 17)
/dev/fd1H720 (minor = 17)
/dev/fd1h360 (minor = 21)
/dev/fd1h720 (minor = 25)
/dev/fd1H1440 (minor = 29)
The generic floppy devices, /dev/fd0 and /dev/fd1, will fail to work with fdformat when a non-standard format is being used, or if the for-
mat has not been autodetected earlier. In this case, use setfdprm(8) to load the disk parameters.
OPTIONS
-n No verify. This option will disable the verification that is performed after the format.
SEE ALSO
fd(4), setfdprm(8), mkfs(8), emkfs(8)
AUTHOR
Werner Almesberger (almesber@nessie.cs.id.ethz.ch)
AVAILABILITY
The fdformat command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
Linux 0.99 1 February 1993 FDFORMAT(8)