I'm not sure I understand what you are asking but here is a bit of additional information that may or may not answer your question.
The partition information for an entire drive is kept in the MBR (master boot record). There is no separate or individual information block available. Therefore my program (and any other) that attempts to save the first 512 bytes of a partition (which is the mbr) for any partition other than the first will receive an error.
My program does not attempt to stop someone from saving an invalid MBR block on other partitions. dd is smart enough to notice that an attempt is being made to save the MBR of an invalid partition and will shoot out an error message, but it still saves the invalid 512 byte block.
This first example will work because the mbr is actualy at the start of partition 1
Code:
dd if=hda1 of=partition.mbr.img count=1 bs=512
This example will cause an error message because the 2nd partition does not have an mbr!
Code:
dd if=hda2 of=partition.mbr.img count=1 bs=512
My thinking is that there may be some special case that I am not aware of that a user may need that 512 byte block. So, I trust the users judgment.
In the future, I will place some type of error trap and give sa message to the user that explains what is going on.
I presently backup my multi-OS multi-paritition boot drive (fedora core 4/ext3, WinXPServer/NTFS, WinXPHome/FAT32) with the command:
telinit 1; cp /dev/sda /dev/sdb
And this works.
Is there a command to only copy a single partition instead of an entire device?
And what about the grub... (12 Replies)
Hi All,
How do I search first string & second string and copy all content between them from one file to another file?
Please help me..
Thanks In Advance.
Regards,
Pankaj (12 Replies)
Scenario:
I would want to copy my / to /mnt, and to avoid recursion exclude /mnt.
cp -avx / /mnt
If i use the above i believe it would run recursively, and end up in mess. So how to do it ?!
Basically this / is sda1, and /mnt is sda2 and sda1 is where only OS is available & currently... (2 Replies)
I need to write a perl script to search for a specific set of numbers that occur after a series of words but before another. Specifically, I need to locate the phrase today at the summit, then immediately prior to the words tonnes/day copy the number that will be between 100 and 9,999, for example,... (1 Reply)
Here's a conundrum. I use a ThinkPad (T30) which has a slot on the side for the hard drive. It is very easy to swap this with another hard drive which I keep as a backup. Now when I copy the Linux partition from my (in use) hard drive to the backup one (in my UltraBay slot) it takes only 30... (0 Replies)
Beginner/Intermediate shell; comfortable in the command line.
I have been looking for a solution to a backup problem. I need to compare Directory 1 to Directory 2 and copy all modified or new files/directories from Directory 1 to Directory 3. I need the directory and file structure to be... (4 Replies)
I have ssh password less auth enable & script does the job well as well
#/bin/bash
for i in `cat ip`
do
scp /etc/resolv.conf root@$ip
done
But I need to take backup of the file i will overwrite .. is there any simple way ?
Kindly respond (5 Replies)
Hello All,
I have a Red Hat Linux 5.9 Server installed with one hard disk & 2 Partitions created on it as follows,
/boot - Linux Partition & another is
LVM - One VG & under that 5-6 Logical volumes(var,opt,home etc).
Here my requirement is to take out 1GB of space from LVM ( Any logical... (5 Replies)
Discussion started by: gr8_usk
5 Replies
LEARN ABOUT LINUX
npm-run-script
NPM-RUN-SCRIPT(1)NPM-RUN-SCRIPT(1)NAME
npm-run-script - Run arbitrary package scripts
SYNOPSIS
npm run-script <command> [--silent] [-- <args>...]
alias: npm run
DESCRIPTION
This runs an arbitrary command from a package's "scripts" object. If no "command" is provided, it will list the available scripts.
run[-script] is used by the test, start, restart, and stop commands, but can be called directly, as well. When the scripts in the package
are printed out, they're separated into lifecycle (test, start, restart) and directly-run scripts.
As of ` https://blog.npmjs.org/post/98131109725/npm-2-0-0, you can use custom arguments when executing scripts. The special option -- is
used by getopt https://goo.gl/KxMmtG to delimit the end of the options. npm will pass all the arguments after the -- directly to your
script:
npm run test -- --grep="pattern"
The arguments will only be passed to the script specified after npm run and not to any pre or post script.
The env script is a special built-in command that can be used to list environment variables that will be available to the script at run-
time. If an "env" command is defined in your package, it will take precedence over the built-in.
In addition to the shell's pre-existing PATH, npm run adds node_modules/.bin to the PATH provided to scripts. Any binaries provided by
locally-installed dependencies can be used without the node_modules/.bin prefix. For example, if there is a devDependency on tap in your
package, you should write:
"scripts": {"test": "tap test/*.js"}
instead of
"scripts": {"test": "node_modules/.bin/tap test/*.js"}
to run your tests.
The actual shell your script is run within is platform dependent. By default, on Unix-like systems it is the /bin/sh command, on Windows it
is the cmd.exe. The actual shell referred to by /bin/sh also depends on the system. As of `
https://github.com/npm/npm/releases/tag/v5.1.0 you can customize the shell with the script-shell configuration.
Scripts are run from the root of the module, regardless of what your current working directory is when you call npm run. If you want your
script to use different behavior based on what subdirectory you're in, you can use the INIT_CWD environment variable, which holds the full
path you were in when you ran npm run.
npm run sets the NODE environment variable to the node executable with which npm is executed. Also, if the --scripts-prepend-node-path is
passed, the directory within which node resides is added to the PATH. If --scripts-prepend-node-path=auto is passed (which has been the
default in npm v3), this is only performed when that node executable is not found in the PATH.
If you try to run a script without having a node_modules directory and it fails, you will be given a warning to run npm install, just in
case you've forgotten.
You can use the --silent flag to prevent showing npm ERR! output on error.
You can use the --if-present flag to avoid exiting with a non-zero exit code when the script is undefined. This lets you run potentially
undefined scripts without breaking the execution chain.
SEE ALSO
o npm help 7 scripts
o npm help test
o npm help start
o npm help restart
o npm help stop
o npm help 7 config
January 2019 NPM-RUN-SCRIPT(1)