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Full Discussion: Imitating DOS functionality: The Call Statment
Top Forums UNIX for Dummies Questions & Answers Imitating DOS functionality: The Call Statment Post 302153470 by jadionne on Monday 24th of December 2007 04:20:26 PM
Old 12-24-2007
Quote:
Originally Posted by jadionne
The () after the function name..Does that mean I can set up paramiters and pass values when I call the function?
I think I found the answer to this question

Quote:
i_upper_case()
{
echo $1 | tr 'abcdefghijklmnopqrstuvwxyz' \
'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
}

This is a very simple function called i_upper_case , you can probably guess what it does. The backslash at the end of the echo line is a UNIX feature that allows a command line to be continued on the next line. It tells the system to ignor the next character - in this case the newline. Note that it gets its input argument from a passed parameter ($1). So to make use of this function within a script you simply need to call it with an argument as follows:
So when I created a function as follows
Code:
######Set Path Variables
echo -==Set Path Variables==- > `cat /export/home/mldwh/rkem_refresh/logs/rkem_log_dir`$TEST
RKEM_LOG=`cat /export/home/mldwh/rkem_refresh/logs/rkem_log_dir`
RKEM_SCRIPT=`cat /export/home/mldwh/rkem_refresh/logs/rkem_script_dir`
RKEM_LOAD_FILES=`cat /export/home/mldwh/rkem_refresh/logs/rkem_load_dir`
echo -==RKEM_LOG $RKEM_LOG==- >> $RKEM_LOG$TEST
echo -==RKEM_SCRIPT $RKEM_SCRIPT==- >> $RKEM_LOG$TEST
echo -==RKEM_LOAD_FILES $RKEM_LOAD_FILES==- >> $RKEM_LOG$TEST


######Set Username and Password Variables
echo -==Set Password Variables==- >> $RKEM_LOG$TEST
IDB1USER=`cat /export/home/mldwh/maintenance/connectivity/idb1user.txt`
IDB1PWD=`cat /export/home/mldwh/maintenance/connectivity/idb1pwd.txt`
TPCUSER=`cat /export/home/mldwh/maintenance/connectivity/tpcuser.txt`
TPCPWD=`cat /export/home/mldwh/maintenance/connectivity/tpcpwd.txt`
echo -==IDB1USER $IDB1USER==- >> $RKEM_LOG$TEST
echo -==IDB1PWD $IDB1PWD==- >> $RKEM_LOG$TEST
echo -==TPCUSER $TPCUSER==- >> $RKEM_LOG$TEST
echo -==TPCPWD $TPCPWD==- >> $RKEM_LOG$TEST


RKEM_Mainframe_time ()
{
######Connect to IDB1 and capture the current time of the system
echo -==Connect to IDB1 and capture the current time of the system==- >> $RKEM_LOG$TEST
db2 "connect to idb1 user $IDB1USER using $IDB1PWD" >> $RKEM_LOG$TEST
db2 -x "select current timestamp from sysibm.sysdummy1" > $RKEM_LOG"rkem_mainframe_system_date_time.txt"
db2 -x "select current date from sysibm.sysdummy1" > $RKEM_LOG"rkem_mainframe_system_date.txt"
db2 -x "select current time from sysibm.sysdummy1" > $RKEM_LOG"rkem_mainframe_system_time.txt"
db2 Terminate
echo -==Mainframe System Date Time `cat $RKEM_LOG"rkem_mainframe_system_date_time.txt"`==- >> $RKEM_LOG$TEST
echo -==Mainframe System Date `cat $RKEM_LOG"rkem_mainframe_system_date.txt"`==- >> $RKEM_LOG$TEST
echo -==Mainframe System time `cat $RKEM_LOG"rkem_mainframe_system_time.txt"`==- >> $RKEM_LOG$TEST
}

And then do the following SH script

Code:
TEST="TESTLOG.LOG"
RKEM_Mainframe_time $TEST

The function works correctly. Is there any danger concerning this variable not getting set correctly by calling it this way?
 

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