11-07-2019
Can you please be more precise and note your operating system with shell details.
Offer an example of your problem and/or make better wording.
Regards
Peasant.
This User Gave Thanks to Peasant For This Post:
10 More Discussions You Might Find Interesting
1. HP-UX
how can I find cpu usage memory usage swap usage and
I want to know CPU usage above X% and contiue Y times and memory usage above X % and contiue Y times
my final destination is monitor process
logical volume usage above X % and number of Logical voluage above
can I not to... (3 Replies)
Discussion started by: alert0919
3 Replies
2. Shell Programming and Scripting
I need a little help with sed. Basically, I need to parse out selections from the output of hddtemp so conky can display some hdd temps for me. I have hddtemp in daemon mode so A simple 'nc localhost 7634' displays the following:
$ nc localhost 7634... (3 Replies)
Discussion started by: audiophile
3 Replies
3. UNIX for Dummies Questions & Answers
Hi all,
Can you please tell me the command, with which one can know the amount of space a specific directory has used.
df -k . ---> Displays, the amount of space allocated, and used for a directory.
du -k <dir name> - gives me the memory used of all the files inside <dir>
But i... (2 Replies)
Discussion started by: abhisheksunkari
2 Replies
4. UNIX for Dummies Questions & Answers
So I have this sed command below. The content of the tmp.txt file is
dv01:at01,at05,at02:at04
sed 's/\:.*\,/\,/g' tmp.txt
Which produces
dv01,at02:at04
and I'm trying to use sed to get me
dv01,at05,at02
Stripping out the parts leading with ":". My sed is pretty basic, can... (5 Replies)
Discussion started by: J-Man
5 Replies
5. Shell Programming and Scripting
Hi guys,
I'm currently trying to understand a piece of shell script and it has some sed commands. I've been looking through sed tutorials to figure out what it does but still no luck :confused:
Can any of you guys tell me what this particular command does?
sed -i '1i\.options' a/*
... (1 Reply)
Discussion started by: chu816
1 Replies
6. Shell Programming and Scripting
I have a html file with the following content:-
<font face=verdana color=#000000>108946</font>
<font face=verdana color=#000000>234346</font>
I want to format the values inside the font tag using thousand separator. I have the following command which can be used for adding thousand... (4 Replies)
Discussion started by: Yoda
4 Replies
7. Shell Programming and Scripting
Hi, I'm trying to find the first field in a text file with the below sed command but it doesn't seem to be correct for running on Solaris.. It has no problem running on AIX. Anyone got a suggestion what the problem is?
sed 's/^\(\+\) /OK/'
The eventual goal is to separate the columns in a... (5 Replies)
Discussion started by: Jazmania
5 Replies
8. Shell Programming and Scripting
for j in $(cat ${list_B})
do
to_replace_2=$(grep $j ${useralias}_2)
sed "s/^${j}/${to_replace_2}/p" ${entries} > ${entries}_2
mv ${entries}_2 ${entries}
done
Hi,
I've the above sed command running in a script. Its basically looping through a file and replacing its beginning of line... (8 Replies)
Discussion started by: Jazmania
8 Replies
9. Shell Programming and Scripting
Hi,
Can anyone let me know the sed command usage
requirement:
sed 's/standard/standard_and/' <new.txt>new.txt
here it needs to search for the pattern "standard" in the file new.txt and it should replace as "standard_and" in the same file new.txt
Note: new.txt is having a separator... (8 Replies)
Discussion started by: srikanth_sagi
8 Replies
10. Shell Programming and Scripting
Hey all,
so I've been experimenting with SED today, no experience before today, so if you're not patient, stop reading now! :P
I will attempt to explain this as simply as possible, without having to post massive walls of shitty code. Basically, I've created a small sed script to go through an... (9 Replies)
Discussion started by: Parrakarry
9 Replies
LEARN ABOUT SUSE
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)
AVAILABILITY
The pivot_root command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
Linux Feb 23, 2000 PIVOT_ROOT(8)