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How to provide password for rsync in shell script?


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# 8  
Need help in shell scripting..Urgent ...Thanks in advance

I am very new to Unix shell scripting ..got some task on unix shell script..
Can you please help me in understanding the below part of shell script
Code:
PROCNAME=`basename $0 | awk -F"." '{print $1}'` 
export LOG_DT=`date '+20%y%m%d'`;
export LOG_TM=`date +'%H%M'`.log; 
export FCTN_LIB=${ARCH_BIN_DIR}/function_library.sh
. ${FCTN_LIB}
export LOG=${LOG_DIR}/${PROCNAME}.${LOG_DT}${LOG_TM}
export PFILE=${PROCNAME}.ksh_param
PGM=${PROCNAME}
clear
trap 'errhandle_se_je 1' 1 2 3 15

A=${1:-0}
B=${2:-0}  
C=${3:-0}  
D=${4:-30}
E=${5:-270}
F="$CDD/${PROCNAME}_dups.bad


Last edited by rbatte1; 04-07-2015 at 07:03 AM.. Reason: Added CODE tags
# 9  
Code:
PROCNAME=`basename $0 | awk -F"." '{print $1}'` 
export LOG_DT=`date '+20%y%m%d'`;
export LOG_TM=`date +'%H%M'`.log; 
export FCTN_LIB=${ARCH_BIN_DIR}/function_library.sh
. ${FCTN_LIB}
export LOG=${LOG_DIR}/${PROCNAME}.${LOG_DT}${LOG_TM}
export PFILE=${PROCNAME}.ksh_param
PGM=${PROCNAME}
clear
trap 'errhandle_se_je 1' 1 2 3 15

A=${1:-0}
B=${2:-0}  
C=${3:-0}  
D=${4:-30}
E=${5:-270}
F="$CDD/${PROCNAME}_dups.bad

Which part are you after explaining? There are seven distinct types of statement here. Which ones are confusing you. I don't want to confuse you.

I'm sure we can break it down for you.



Robin
# 10  
Code:
PROCNAME=`basename $0 | awk -F"." '{print $1}'`

Fills the variable PROCNAME with the basename (without path if existed), uses a dot as field seperator, and used the first part of the filename which was limited by dot/s.

Code:
export LOG_DT=`date '+20%y%m%d'`;

Fills and exports the variabe LOG_DT with the value of date, though should have used %Y rather than 20%y

Code:
export LOG_TM=`date +'%H%M'`.log;

Similar as above but with time, and appending the .log extension to the string.

Code:
export FCTN_LIB=${ARCH_BIN_DIR}/function_library.sh

Fills and exports the variable FCTN_LIB with the (undefiend) variable ARCH_BIN_DIR, and appending the filename function_library.sh.

Code:
. ${FCTN_LIB}

Sourcing the above defined file.

Code:
export LOG=${LOG_DIR}/${PROCNAME}.${LOG_DT}${LOG_TM}

Finaly the LOG variable gets filled and exported by appending the above strings together.

Code:
export PFILE=${PROCNAME}.ksh_param

Yet another PFILE variable, which is named the same as the script beeing executed, but having .ksh_param extension, rather than what was originaly.

Code:
PGM=${PROCNAME}

Fill another variable with the basename without file extension to PGM.

Code:
clear

Clear the screen, not that anything was printed yet...

Code:
trap 'errhandle_se_je 1' 1 2 3 15

Trying to trap a function, which was not defined in the given code, while passing 1 2 3 15.
There seems an error, as the first 1 is inside the quote to the function, which probably will cause the function to fail, since its quote, and since there is a space inside the quotes.
Code:
A=${1:-0}
B=${2:-0}  
C=${3:-0}

Filling variable A,B,C with the values of passed arguments 1,2,3 while cut off the 0 tailing chars.

Code:
D=${4:-30}
E=${5:-270}

Same as above, but cutting off 30 (D) or 270 (E) tailing chars (from the right!)

Code:
F="$CDD/${PROCNAME}_dups.bad

Fills the variable F with undefiend variable CDD as path and using PROCNAME (not PGM with the same content) and yet another file extension: .bad.

Hope this helps to get you started
# 11  
Well, sea,

I had hoped to be specific with the areas that the requester was having problems with, but I believe that there is an error in your explanation for the variables A, B, C, D, E & F.

For A, B & C what you are actually doing (I will use example A) is assigning the variable A with the value of the first passed argument or if it is not set, assigning the variable to zero. So if you called the program with my_prog Hello World then A would become Hello, B would become World and C would be set to zero.

For D & E, the default values (if the 5th & 6th passed arguments are not set) are 30 & 270 respectively.

Variable F is an invalid statement, in that there is no closing double quote.



Additionally, the clear command not only clears the screen, but puts the cursor in the top left corner.


Robin
This User Gave Thanks to rbatte1 For This Post:
# 12  
Quote:
Originally Posted by Little
I agree Mr rbattle, things are temporary in this world. But dnt you think there are many people who are going to be benefited with this temporary solution too.
Not really. Nobody's going to need the exact same spaghetti code you used to shoehorn expect into this. expect is not a general solution.
Quote:
There are 1000's of post which have the same solution of using ssh key authentication.
And there will be thousands more until people realize "keys weren't just safer, they were simpler and easier in every way. I wasted so much time and thousands of lines of code wrangling expect instead of spending 5 minutes to set up proper keys and use the system the way it was designed."
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