I am having this problem......when I run this script:
print -n "Enter file name to be deleted: "
read answer
if
then
rm $name
else
echo "No such file with the name: $name exists"
fi
I was trying to test my script for errors, and basically when the user had files with the rights: 400,... (1 Reply)
Hi
My computer of late started misbehaving. Whenever I switch it on
It say Override and then it takes long to boot. Surprising is that it opens excel automatic. What could be that? (1 Reply)
Hi Guys,
I'm new in Unix Environment.
Any Unix Guru around...I need help. My question is, is it possible that the root cron could be override with 3rd party software?How can it happen. Another thing, how the cron job works?, I mean how the Unix process the cron job , I don't have an idea... (2 Replies)
When the aix date function is called by a routine, is the date function 'aware' of the name of the routine that is calling it, such that if we had the source code of the date function, we could modify it so that it provides a date to the caller depending upon the identity of the calling routine.... (1 Reply)
hi ,
greetings ,
I have one doubt reg the C functions .
I have a program sample.c , in which i have function name scanf , which reads a a variable and prints the variable inside the function .
this scanf is nothing to do with C library function scanf , but i would like to use only user... (1 Reply)
I would like to override the default profile which is loaded when the system starts or When I run a program so that profile should get loaded in the settings.
Is there any system call to do so.
. (0 Replies)
Hi, yesterday, I changed root's shell in /etc/passwd, cause a mistake then I can not log in root account (can't find correct shell). I attempted to log in single-mode, however, it prompted for single-mode's password then I type root's password but still can not log in.
I'm using AIX 5L version 5.2... (2 Replies)
Hi,
I get this question in the console when I try to delete a htaccess file. What does it mean ?
override rw-r--r-- root/staff for .htaccess?
thanks (2 Replies)
Hi All
After downloading ZFS documentation from oracle site, I am able to successfully migrate UFS root FS without zones to ZFS root FS. But in case of UFS root file system with zones , I am successfully able to migrate global zone to zfs root file system but zone are still in UFS root file... (2 Replies)
Hi,
When I login to my HP-UX and fire the "set" command I see that the weblogic 9.2 classpath is already set.
However, I wish to override the classpath to weblogic version 10.3
I have a script call setWLSEnv.sh that has the desired classpath.
Thus, in my unix script i write
.... (6 Replies)
Discussion started by: mohtashims
6 Replies
LEARN ABOUT DEBIAN
pivot_root
PIVOT_ROOT(8) System Administration PIVOT_ROOT(8)NAME
pivot_root - change the root filesystem
SYNOPSIS
pivot_root new_root put_old
DESCRIPTION
pivot_root moves the root file system of the current process to the directory put_old and makes new_root the new root file system. Since
pivot_root(8) simply calls pivot_root(2), we refer to the man page of the latter for further details.
Note that, depending on the implementation of pivot_root, root and cwd of the caller may or may not change. The following is a sequence for
invoking pivot_root that works in either case, assuming that pivot_root and chroot are in the current PATH:
cd new_root
pivot_root . put_old
exec chroot . command
Note that chroot must be available under the old root and under the new root, because pivot_root may or may not have implicitly changed the
root directory of the shell.
Note that exec chroot changes the running executable, which is necessary if the old root directory should be unmounted afterwards. Also
note that standard input, output, and error may still point to a device on the old root file system, keeping it busy. They can easily be
changed when invoking chroot (see below; note the absence of leading slashes to make it work whether pivot_root has changed the shell's
root or not).
EXAMPLES
Change the root file system to /dev/hda1 from an interactive shell:
mount /dev/hda1 /new-root
cd /new-root
pivot_root . old-root
exec chroot . sh <dev/console >dev/console 2>&1
umount /old-root
Mount the new root file system over NFS from 10.0.0.1:/my_root and run init:
ifconfig lo 127.0.0.1 up # for portmap
# configure Ethernet or such
portmap # for lockd (implicitly started by mount)
mount -o ro 10.0.0.1:/my_root /mnt
killall portmap # portmap keeps old root busy
cd /mnt
pivot_root . old_root
exec chroot . sh -c 'umount /old_root; exec /sbin/init'
<dev/console >dev/console 2>&1
SEE ALSO chroot(1), mount(8), pivot_root(2), umount(8)AVAILABILITY
The pivot_root command is part of the util-linux package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
util-linux February 2000 PIVOT_ROOT(8)