04-19-2004
Re: Simple arithmetic operation
Quote:
Originally posted by paladyn_2002
I have no idea why I can't get this to work, if anybody can help i would appreciate it.
#!/bin/bash
x=`cat counter.txt | wc -l`
y= '$x / 7'
printf "%d People have visited this page" $y
You may go over bash's syntax.
1. It is better to use $() instead of `` in bash, a modern shell.
2. The syntax of Arithmetic expression in Bash: $(())
y=$(($x / 7))
3. No "printf" command
echo "$y People have visited this page"
4. Use "sh" instead of "bash", the former is usually a softlink to "bash"
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LEARN ABOUT DEBIAN
tentacle_client
TENTACLE_CLIENT(1) Client file transfer protocol TENTACLE_CLIENT(1)
NAME
tentacle_client - a client file transfer protocol
SYNOPSIS
tentacle_client <options> Tentacle is a client/server file transfer protocol that aims to be:
- Executable programs or shell commands
- System calls (functions provided by the kernel)
- Library calls (functions within program libraries)
Tentacle was created to replace more complex tools like SCP and FTP for simple file transfer/retrieval, and switch from authentication
mechanisms like .netrc, interactive logins and SSH keys to X.509 certificates. Simple password authentication over a SSL secured connection
is supported too.
The client and server (TCP port 41121) are designed to be run from the command line or called from a shell script, and no configuration
files are needed.
Tentacle is now the default file transfer method for Pandora FMS and Babel Enterprise.
Tentacle is implemented in Perl and ANSI C (Windows platforms included).
You can download it and get more information at the official Sourceforge website http://tentacled.sourceforge.net/.
OPTIONS
Tentacle Client options :
-a address : Server address (default 127.0.0.1).
-c : Enable SSL without a client certificate.
-e cert : OpenSSL certificate file. Enables SSL.
-f ca : Verify that the peer certificate is signed by a ca.
-g : Get files from the server.
-h : Show help.
-k key : OpenSSL private key file.
-p port : Server port (default 41121).
-q : Quiet. Do now print error messages.
-r number : Number of retries for network operations (default 3).
-t time : Time-out for network operations in seconds (default 1s).
-v : Be verbose.
-w : Prompt for OpenSSL private key password.
-x pwd : Server password.
EXAMPLES
tentacle_client -a 192.168.1.1 -v /bin/bash
Simple file transfer with maximum file size set to 1MB
tentacle_client -a 192.168.1.1 -x password -v /bin/bash
Simple file transfer with password authentication (not secure)
tentacle_client -a 192.168.1.1 -x password -e cert.pem -k key.pem -v /bin/bash
Secure file transfer with client certificate and password authentication
NOTES
Tentacle requires Perl 5.8 or higher to works
SEE ALSO
tentacle_server(1), pandora_server(1), pandora_agent(1)
0.2.0 2010-05-11 TENTACLE_CLIENT(1)