How do I direct the output of an at command
at now < backupprogram
so that I see something happening. It says the job has been executed but I am not getting the tar file that my backup program on the computer anywhere at all
Please help me - I really am a struggling begginer. (1 Reply)
Hi,
I just wrote a program in C to split a comma seperated string in to group of strings using strtok() function. The code is:
int main()
{
char *temp;//not used here but basically we extract one string after another using strtok() and assign to a string pointer defined like this.
... (3 Replies)
I am running a program which probably calla script within, this script executes in a pop window and control returns back to main program.
Whilw this script is executing i can see a number of messages being displayed but I cannot read them ,too fast.
Is their a way I can redirect those... (3 Replies)
I have a script in which some outputs are directed to one file
echo "Load Started" >>${LOGFILE1}
If I have another file LOGFILE2 and i want to redirect the output of the above echo command to LOGFILE2 as well with the same command line... how can i do that?
Thanks (2 Replies)
Dear All
I have a simple bash script that creates a folder ( I called it TEMP) in the current directory.
The question is: how do I direct the output of my awk script into folder TEMP?
Below is my attempt:
#!/bin/bash
mkdir TEMP
echo Enter input file:
read infile
awk... (4 Replies)
Does anybody know any alternative way to save output result of a program into another new file?
I got try the command below:
program_used input_file > new_output_file
program_used input_file >> new_output_file
Unfortunately, both the ">" and ">>" is not work at this case to save the output... (6 Replies)
Hi,
I have following input file. I want to generate output file in specific format using shell program. The input file has atleast few thousands of lines, the below are some sample lines.
Input file:
"ORDER NO"|"ORDER AMT"|"LINE ITEM"|"LINE AMT"|"SALES COMMISION %"
ORD3456|5000|LIN345|30|25%... (8 Replies)
Is there a way to keep the output of a script displayed on the terminal when it's run by itself, but suspend part of that output and only have a specific part delivered when it's piped to another script or program? I'm thinking something like the following pseudocode:
#!/bin/bash
... (1 Reply)
Hi Friends,
This is the only solution to my task. So, any help is highly appreciated.
I have a file
cat input1.bed
chr1 100 200 abc
chr1 120 300 def
chr1 145 226 ghi
chr2 567 600 unix
Now, I have another file by name
input2.bed (This file is a binary file not readable by the... (7 Replies)
Discussion started by: jacobs.smith
7 Replies
LEARN ABOUT REDHAT
pivot_root
PIVOT_ROOT(8) Maintenance Commands PIVOT_ROOT(8)NAME
pivot_root - change the root file system
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)Linux Feb 23, 2000 PIVOT_ROOT(8)