How to perform checksum of a file on remote server using Curl?

Login or Register to Ask a Question and Join Our Community

How to perform checksum of a file on remote server using Curl?

Tags

aix, curl, shell scripts

Login to Discuss or Reply to this Discussion in Our Community

Top Forums Shell Programming and Scripting How to perform checksum of a file on remote server using Curl?

08-29-2017

Registered User

2, 0

Join Date: Jun 2015

Last Activity: 30 August 2017, 6:13 AM EDT

Posts: 2

Thanks Given: 0

Thanked 0 Times in 0 Posts

How to perform checksum of a file on remote server using Curl?

Hi, We have an AIX server and have CURL 7.40 installed in it.

We are struggling to perform checksum on the file present on the remote server (AWS). We want to validate the checksum on the file pre and post download to make sure that there is no issue with the file.

We are writing a shell script and we are using Curl for FTPS connection and downloading the file from AWS to AIX.

I have copied the code snippet that we have written to list the files and download them.

Code:

#list files on AWS server
curl -tlsv1.2 --cacert certs.cer --ftp-ssl --ftp-skip-pasv-ip --list-only --cert ${CERT_USER}:${CERT_USER_PWD} ftp://${USER_NAME}:${USER_PWD}@awscloud.com:50021/Inbox/* > ${LOGS}

#download the files mentioned in the list file
cat ${LOGS} | \
awk '{print $1}' | \
while read FILENAME
do
 echo "File being copied currently is ${FILENAME} "
 curl -tlsv1.2 --cacert certs.cer --ftp-ssl --ftp-skip-pasv-ip --cert ${CERT_USER}:${CERT_USER_PWD} ftp://${USER_NAME}:${USER_PWD}@awscloud.com:50021/Inbox/${FILENAME} -o ${FILENAME}
done

Sanjay_13

View Public Profile for Sanjay_13

Find all posts by Sanjay_13

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Script connect to remote server, not find files and exit only from remote server, but not from scrip

I have a script, which connecting to remote server and first checks, if the files are there by timestamp. If not I want the script exit without error. Below is a code TARFILE=${NAME}.tar TARGZFILE=${NAME}.tar.gz ssh ${DESTSERVNAME} 'cd /export/home/iciprod/download/let/monthly;...

2. Shell Programming and Scripting

Sudo connect to a remote server and execute scripts in remote server

Hello Every one!! I am trying to write a shell script which will connect to a remote server and execute scripts which are at a certain path in the remote server. Before this I am using a sudo command to change the user. The place where I am stuck is, I am able to connect to the...

3. Shell Programming and Scripting

How to Append the output of a script running in remote server to a file in local server?

Hi guys, So i am in server1 and i have to login to server 2, 3,4 and run some script there(logging script) and output its result. What i am doing is running the script in server2 and outputting it to a file in server 2 and then Scp'ing the file to server1. Similarly i am doing this for other...

4. Shell Programming and Scripting

How to create a file in remote server from local server?

hi, can anyone tell me how can i store the names of a file that are in remote server to a file and then get the file that contains the name in local server? there is a remote server where 5 files are present , say a.txt b.txt c.txt d.txt e.txt i want to write a script in my local...

5. Shell Programming and Scripting

Curl ftp upload success but no file exist on the server !!!!

hello, I'm trying to upload a file to this ftp server and others ftp://ftp.byethost12.com as you can see in the output of CURL using the -v option curl reports that the upload succeeded but when i connected to the server with file-zilla there is no file uploaded the same command upload files...

6. Shell Programming and Scripting

checksum of remote server

Hi I am trying to check the successfull transfer of a file from my local server to remote server. I wish to generate a md5 checksum of the file residing on my local server and also generate a md5checksum on the remote server and compare value. I was successfull in generating checksum on local...

7. Shell Programming and Scripting

preserving the timestamp of a file when copied from remote server to local server using ftp

Hi, I need to copy few files from remote server to local server. I write a shell script to connect to the remote server using ftp and go to that path. Now i need to copy those files in the remote directory to my local server with the timestamp of all those files shouldnt be changed. ...

8. Shell Programming and Scripting

Use cURL in shell script and get most recent file from remote server using SFTP

I have been trying to implement the following shell script -- sftp to remote server get list of files in the directory sftp get the most recent listed file exit This script will be scheduled to be executed everyday using CRON or CONTROL-M and the need is to have absolutely no human...

9. Shell Programming and Scripting

Transfer file from local unix server to remote server

want to remove this thread. thanks

10. HP-UX

Transfer file from local unix server to remote server

want to remove the thread thanks

Login or Register to Ask a Question

LEARN ABOUT MOJAVE

curlopt_ssl_verifypeer

CURLOPT_SSL_VERIFYPEER(3)				     curl_easy_setopt options					 CURLOPT_SSL_VERIFYPEER(3)

NAME

       CURLOPT_SSL_VERIFYPEER - verify the peer's SSL certificate

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_SSL_VERIFYPEER, long verify);

DESCRIPTION

       Pass a long as parameter to enable or disable.

       This  option  determines whether curl verifies the authenticity of the peer's certificate. A value of 1 means curl verifies; 0 (zero) means
       it doesn't.

       When negotiating a TLS or SSL connection, the server sends a certificate indicating its identity.  Curl verifies whether the certificate is
       authentic,  i.e.  that  you  can trust that the server is who the certificate says it is.  This trust is based on a chain of digital signa-
       tures, rooted in certification authority (CA) certificates you supply.  curl uses a default bundle of CA certificates (the path for that is
       determined at build time) and you can specify alternate certificates with the CURLOPT_CAINFO(3) option or the CURLOPT_CAPATH(3) option.

       When  CURLOPT_SSL_VERIFYPEER(3)	is  enabled,  and the verification fails to prove that the certificate is authentic, the connection fails.
       When the option is zero, the peer certificate verification succeeds regardless.

       Authenticating the certificate is not enough to be sure about the server. You typically also want to ensure that the server is  the  server
       you  mean  to be talking to.  Use CURLOPT_SSL_VERIFYHOST(3) for that. The check that the host name in the certificate is valid for the host
       name you're connecting to is done independently of the CURLOPT_SSL_VERIFYPEER(3) option.

       WARNING: disabling verification of the certificate allows bad guys to man-in-the-middle the communication without you knowing it. Disabling
       verification makes the communication insecure. Just having encryption on a transfer is not enough as you cannot be sure that you are commu-
       nicating with the correct end-point.

DEFAULT

       By default, curl assumes a value of 1.

PROTOCOLS

       All TLS based protocols: HTTPS, FTPS, IMAPS, POP3S, SMTPS etc.

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

	 /* Set the default value: strict certificate check please */
	 curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 1L);

	 curl_easy_perform(curl);
       }

AVAILABILITY

       If built TLS enabled.

RETURN VALUE

       Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.

SEE ALSO

       CURLOPT_SSL_VERIFYHOST(3), CURLOPT_PROXY_SSL_VERIFYPEER(3), CURLOPT_PROXY_SSL_VERIFYHOST(3),

libcurl 7.54.0							 February 09, 2017					 CURLOPT_SSL_VERIFYPEER(3)