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Shell Programming and Scripting

Create a file with comment in script

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Top Forums Shell Programming and Scripting Create a file with comment in script
# 8  
Old 02-10-2013
Quote:
Originally Posted by RudiC
More guessing than reading/understanding, I've come up with
Code:
#!/bin/bash
# set -vx

f1()    {
         echo $1 $2 $3 $4                                       # put your function here
        } 


case $# in
        0)      echo -e "# comment1\n# comment2" > list_file    # create list_file as desired
                read -p "Please fill in this list_file: "       # prompt as desired, read answer
                echo $REPLY                                     # do whatever with the user's reply
                ;;
        1)      [ -f "$1" ] || exit                             # check if file exists; otherwise exit
                grep -v '^#' "$1" |                             # do what you did before
                        while read arg1 arg2 arg3 arg4
                                do f1 $arg1 $arg2 $arg3 $arg4
                                done
                ;;
        4)      echo -e "# comment1\n# comment2" > list_file    # create list_file as desired
                echo $1 $2 $3 $4 >> list_file                   # put your function here
                ;;
        *)      echo "error msg"; exit
esac

$ ./test X Y Z S
$ cat list_file
# comment1
# comment2
X Y Z S

Would this come near to what you expect?
Thank you very much RudiC, it' OK Smilie

I'd like to make a fourth case
Running the script as a parameter a file name at the discretion of the user

For example

Code:
./ my_script tom 10 20 srv_log srv4

Quote:
cat tom
# Comment 1
# begin_hour...end_hour.....name_log.....name_server
10 20 srv_log srv4
I tried in vain. Can you help me ?

Another question
How do I put begin_hour below 10, end_hour below 20 and so on ? (like an array)

I'm sorry but i'm not a pro in Shell
Thank you again
# 9  
Old 02-10-2013
Put this between the 4) line and the *) line:
Code:
        5)      echo -e "# comment1\n# comment2" > $1           # create file with $1 file name as desired
                shift
                echo $1 $2 $3 $4 >> list_file                   # put your function here
                ;;

Now that there's line after line with similar code coming up, we could find quite some opportunities for optimizing...
re. your "another question" - sorry, I don't understand what your after.
# 10  
Old 02-10-2013
Quote:
Originally Posted by RudiC
Put this between the 4) line and the *) line:
Code:
        5)      echo -e "# comment1\n# comment2" > $1           # create file with $1 file name as desired
                shift
                echo $1 $2 $3 $4 >> list_file                   # put your function here
                ;;

Now that there's line after line with similar code coming up, we could find quite some opportunities for optimizing...
re. your "another question" - sorry, I don't understand what your after.
It didn't work.
Is there an error at red line ? $1 instead of list_file
But it doesn't work too with echo $1 $2 $3 $4 >> $1
syntax error near unexpected symbol ")"



# 11  
Old 02-11-2013
Yes, you're absolutely right - should read >> "$1" (putting double quotes around $1 would be wise, too) Sorry for sloppy copying...
As there is no ")" found in the script text, did you check the contents of $1 for ")"?
# 12  
Old 02-18-2013
Quote:
Originally Posted by RudiC
Yes, you're absolutely right - should read >> "$1" (putting double quotes around $1 would be wise, too) Sorry for sloppy copying...
As there is no ")" found in the script text, did you check the contents of $1 for ")"?
Code:
#!/bin/bash
# set -vx

f1()    {
         echo $1 $2 $3 $4                                       # put your function here
        }


case $# in
        0)      echo -e "# comment1\n# comment2" > list_file    # create list_file as desired
                read -p "Please fill in this list_file: "       # prompt as desired, read answer
                echo $REPLY                                     # do whatever with the user's reply
                ;;
        1)      [ -f "$1" ] || exit                             # check if file exists; otherwise exit
                grep -v '^#' "$1" |                             # do what you did before
                        while read arg1 arg2 arg3 arg4
                                do f1 $arg1 $arg2 $arg3 $arg4
                                done
                ;;
        4)      echo -e "# comment1\n# comment2" > list_file    # create list_file as desired
                echo $1 $2 $3 $4 >> list_file                   # put your function here
                ;;
        5)      echo -e "# comment1\n# comment2" > $1           # create file with $1 file name as desired
                shift
                f1 $1 $2 $3 $4 >> "$1"                   # put your function here
                ;;

        *)      echo "error msg"; exit
esac

The case 5 didn't work.

I would like create a file named hello with comments and parameters like
Code:
cat hello
#comment1
#comment2
A B C D



I launch my script
Code:
./my_script hello A B C D



This script created 2 files hello and A

Code:
cat hello
# comment1
# comment2



Code:
cat A
A B C D


Thanks in advance for your help.
# 13  
Old 02-18-2013
Rats! Sorry for that. I should never give out any code without thoroughly testing it - even small "corrections" on the fly will come flying in my face!
Drop the shift and make the next line read
f1 $2 $3 $4 $5 >> "$1" Will work then, hopefully. Pls report back.
This User Gave Thanks to RudiC For This Post:
amazigh42
# 14  
Old 02-18-2013
Thank you RudiC Smilie it works.
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