The following ksh script is trying to get a file's cksum then, scp it over to a remote machine - get the cksum there and then compare the two cksums to make sure they match. I am having problems setting a variable on the remote host where it can be read locally. Is this even possible - reading a shell variable from a remote host? I have the ssh and scp file transfer working properly. The two problems I am having are logging to the remote host's syslog.log and exporting $REMOTECKSUM for comparison. Any help or guidance is appreciated.
I can't get ssh ans scp to work between to host on my network. I am prompted for the password and it isn't accepting the password and I know the password is correct because I am using the root password. What do I need to do to get ssh working between the two host and scp. I can putty into the... (2 Replies)
I am scp'ing a file from a server (servera) to my server (serverb)
If servera is down - the scp never times out ... it just hangs eternally..
It is possible to specify a timeout in my script - so if scp fails/hang for more than 60 seconds I assume its failed ?
I am aware there is some... (3 Replies)
I'm using scp to copy files to another company via our 4.3.3 server. I am having transfer problems right at the transfer point in scp. Below are 2 debug outputs showing the bottleneck. The lower level debug preceeds the higher level debug output. It just seems to stop and refuses to transfer... (0 Replies)
Thanks to this forum, I was able to get a program running that uses SSH to control programs running on other hosts. Now I'd like to enhance it.
The control program on the target hosts occassionally needs to be updated. Updating the menu program on the source host is easy as it is on one host. ... (1 Reply)
Hi
I am trying to scp a file between to servers (both on same subnet and can see each other). However, whenever I try I get the following error:
ld.so.1: ssh: fatal: relocation error: file /usr/local/bin/ssh: symbol EVP_CIPHER_CTX_key_length: referenced symbol not found
lost connection
I... (4 Replies)
Hi all
Iam using ssh and trying to change to a different user but im not able to do it.
--------
Script.sh
ssh user@hostname
sudo rootsh
whoami
--------
--------
Script2.sh
ssh user@hostname
su - username password
whoami
---------
When i run the Script.sh it is connecting to... (4 Replies)
Hi there,
I'm working with two linux servers and if I use ssh to connect from 1 to 2 everything works fine ( ..as usual:rolleyes:), while if I try to connect via ssh or to copy files through scp (as I usually do...) from 2 to 1, after the password I get this message:
Connection closed by... (6 Replies)
Dear All,
whenever i try the command ssh , it is giving the below error.
ld.so.1: ssh: fatal: relocation error: file /usr/bin/ssh: symbol SUNWcry_installed: referenced symbol not found
Killed
For SCP also the same error is coming.
Pl reply me if you have answers.
Rj (4 Replies)
Hello All,
I have a requirement to copy few files from remote server to local, and below are the sequence
ssh to the remote host
finding the files with the specific condition
once found scp to the local server path
for (( i=0; i<${tLen}; i++ ))
do
ssh... (1 Reply)
Discussion started by: nextStep
1 Replies
LEARN ABOUT OPENSOLARIS
cksum
cksum(1) User Commands cksum(1)NAME
cksum - write file checksums and sizes
SYNOPSIS
cksum [file]...
DESCRIPTION
The cksum command calculates and writes to standard output a cyclic redundancy check (CRC) for each input file, and also writes to standard
output the number of octets in each file.
For each file processed successfully, cksum will write in the following format:
"%u %d %s
" <checksum>, <# of octets>, <path name>
If no file operand was specified, the path name and its leading space will be omitted.
The CRC used is based on the polynomial used for CRC error checking in the referenced Ethernet standard.
The encoding for the CRC checksum is defined by the generating polynomial:
G(x) = x^32 + x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x + 1
Mathematically, the CRC value corresponding to a given file is defined by the following procedure:
1. The n bits to be evaluated are considered to be the coefficients of a mod 2 polynomial M(x) of degree n-1. These n bits are the
bits from the file, with the most significant bit being the most significant bit of the first octet of the file and the last bit
being the least significant bit of the last octet, padded with zero bits (if necessary) to achieve an integral number of octets,
followed by one or more octets representing the length of the file as a binary value, least significant octet first. The small-
est number of octets capable of representing this integer is used.
2. M(x) is multiplied by x ^32 (that is, shifted left 32 bits) and divided by G(x) using mod 2 division, producing a remainder R(x)
of degree <= 31.
3. The coefficients of R(x) are considered to be a 32-bit sequence.
4. The bit sequence is complemented and the result is the CRC.
OPERANDS
The following operand is supported:
file A path name of a file to be checked. If no file operands are specified, the standard input is used.
USAGE
The cksum command is typically used to quickly compare a suspect file against a trusted version of the same, such as to ensure that files
transmitted over noisy media arrive intact. However, this comparison cannot be considered cryptographically secure. The chances of a dam-
aged file producing the same CRC as the original are astronomically small; deliberate deception is difficult, but probably not impossible.
Although input files to cksum can be any type, the results need not be what would be expected on character special device files. Since this
document does not specify the block size used when doing input, checksums of character special files need not process all of the data in
those files.
The algorithm is expressed in terms of a bitstream divided into octets. If a file is transmitted between two systems and undergoes any data
transformation (such as moving 8-bit characters into 9-bit bytes or changing "Little Endian" byte ordering to "Big Endian"), identical CRC
values cannot be expected. Implementations performing such transformations may extend cksum to handle such situations.
See largefile(5) for the description of the behavior of cksum when encountering files greater than or equal to 2 Gbyte ( 2^31 bytes).
ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of cksum: LANG, LC_ALL, LC_CTYPE, LC_MES-
SAGES, and NLSPATH.
EXIT STATUS
The following exit values are returned:
0 All files were processed successfully.
>0 An error occurred.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
|Interface Stability |Standard |
+-----------------------------+-----------------------------+
SEE ALSO digest(1), sum(1), bart(1M), attributes(5), environ(5), largefile(5), standards(5)SunOS 5.11 1 Feb 1995 cksum(1)