8 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
#!/bin/sh
PATH_1=$PATH
echo "PATH_1 is " $PATH_1
function user_func (){
whoami
export PATH=$PATH_1:/usr/local/bin
echo "PATH is" $PATH
exit
}
export -f user_func
su -m hadoop -c 'user_func'
from out put, PATH is not set with PATH_1 append ( it's not another user to run the... (5 Replies)
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2. Red Hat
Hello,
1 ) Fdisk -l # Displays all the disk with partition table information
My Query )
A ) How can i make one disk ex: /dev/sdd not visible in fdisk -l output ?
B) From where fdisk -l collect and display the information ? (8 Replies)
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3. Linux
Dear all, I lost my CentOS 6.4, Systems default bar/panel where we navigate our system for the Applications, Places & System, Is there anyone who can help me please??? (1 Reply)
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4. SuSE
Dear All
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5. UNIX and Linux Applications
I have set a mysql file to excute everyday morning to generate a html file displayng 2 tables from the database. Sometime they cannot be shown, and it shows the tables are not existed. I have not drop any table, and those 2 tables are not used by any other excution. Anybody know what is happening?... (0 Replies)
Discussion started by: c203040
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6. Red Hat
Hello,
I have a KVM system running on RHEL 5.4. It hosts 4 guest VMs. One of the guest host fails to get back the mounted filesystems after the system reboots. Does anyone have any idea what the issue could be?
Regards,
Mahive. (1 Reply)
Discussion started by: mahive
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7. Shell Programming and Scripting
Hi all... I-m quite a new user of UNIX and i was trying to write a simple program and my problem is the following:how can i make a typed letter disappear (as we see in the MORE command, when we type <space>, b, q etc...) i know that for typing some text that has to be read it's used the structure:... (0 Replies)
Discussion started by: Cellofan
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8. Solaris
We have bunch of Sun Sparc workstations(solaris 7 & 8) connecting to a linux file server with NFS exports. Recently we upgraded our file server from fedora core1 to redhat enterprise linux 4. And since then we are experiencing a nightmare of file/dir missing. It happens randomly, couple of times... (1 Reply)
Discussion started by: motor98
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UMOUNT(8) BSD System Manager's Manual UMOUNT(8)
NAME
umount -- unmount filesystems
SYNOPSIS
umount [-fv] special | node
umount -a | -A [-fv] [-h host] [-t type]
DESCRIPTION
The umount command calls the unmount(2) system call to remove a special device or the remote node (rhost:path) from the filesystem tree at
the point node. If either special or node are not provided, the appropriate information is taken from the list of filesystems provided by
getfsent(3).
The options are as follows:
-a All the filesystems described via getfsent(3) are unmounted.
-A All the currently mounted filesystems except the root are unmounted.
-f The filesystem is forcibly unmounted. Active special devices continue to work, but all other files return errors if further accesses
are attempted. The root filesystem cannot be forcibly unmounted.
-h host
Only filesystems mounted from the specified host will be unmounted. This option implies the -A option and, unless otherwise speci-
fied with the -t option, will only unmount NFS filesystems.
-t type
Is used to indicate the actions should only be taken on filesystems of the specified type. More than one type may be specified in a
comma separated list. The list of filesystem types can be prefixed with ``no'' to specify the filesystem types for which action
should not be taken. For example, the umount command:
umount -A -t nfs,hfs
umounts all currently-mounted filesystems of the type NFS and HFS. (The -a option only unmounts entries in the /etc/fstab list.)
-v Verbose, additional information is printed out as each filesystem is unmounted.
NOTES
Due to the complex and interwoven nature of Mac OS X, umount may fail often. It is recommended that diskutil(1) (as in, ``diskutil unmount
/mnt'') be used instead.
SEE ALSO
unmount(2), getfsent(3), mount(8), diskutil(1)
HISTORY
A umount command appeared in Version 6 AT&T UNIX.
4th Berkeley Distribution May 8, 1995 4th Berkeley Distribution