Unix shell script question (goto - label)

Posted on 2003-10-29
Last Modified: 2013-12-26
I am a novice shell script programmer, so be gentle!

Currently I have a automated process that uses about 10 separate Bourne shell scripts... One will execute, then fire off the next and so forth.
I want to consolidate the scripts into one, but I need to use some type of "goto" command to a label inside the script. I did not find any "goto" command in my Unix Shell programming book. I know that the "csh" uses "goto", but I was told not to use "csh".

Any suggestions?
Question by:rlburris
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LVL 38

Accepted Solution

yuzh earned 250 total points
ID: 9647955
If you want to merge all the scripts in one piece, define each script as a function of your
main script.
just make sure that you declear the fuction at the beginning of your script


a litter script:

# log something to a log file
echo "$1" >>$LOGFILE 2>&1

Now we, write a main script and modify the above script as a function.


# VAR declarations


# Functions

Log ()
  echo "$1" >>$LOGFILE 2>&1

# start of the main script
# do some thing

# use the function
Log "Subject: SUCCESS!: ${DAY} Backup log for SQL Server"

# do other things



Hope that it can help.

Author Comment

ID: 9648079
      Please explain (break down) the following command:
echo "$1" >> $LOGFILE 2>&1

Also when you use the function Log in your example... Does "Subject:SUCCESS!" writes to the LOGFILE?

LVL 38

Expert Comment

ID: 9648170
echo "$1" >> $LOGFILE

willl write "Subject: SUCCESS!: ${DAY} Backup log for SQL Server" to $LOGFILE
in this case is /var/log/mylog (I defined it before the function)

echo "$1" >> $LOGFILE 2>&1

will write "Subject: SUCCESS!: ${DAY} Backup log for SQL Server" + any
error message to the login file (I redirect stderr to stdin)

Author Comment

ID: 9648468
Thanks yuzh!!!
LVL 38

Expert Comment

ID: 9648474
You are welcome.


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