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Full Discussion: Check and control params in parsing file
Top Forums Shell Programming and Scripting Check and control params in parsing file Post 302774481 by amazigh42 on Saturday 2nd of March 2013 06:15:02 AM
Old 03-02-2013
Hello,
Here my new modifed script.
I only verify the first parameter in the inputfile named list_file
Code:
$ cat list_file
# comment1
# comment2
dora B C D

When i launched
Code:
./my_script list_file
bad argument

there would have
Code:
./my_script list_file

Thanks in advance for your help.

dora B C D

Code:
#!/bin/bash
# set -vx

f1()    {
      bash -c 'if [[ "$arg1" =~ '^\{d,q,p,f}ora' ]]; then
       echo $1 $2 $3 $4
      else echo "bad argument";
       fi'
        }
case $# in
        0)      echo -e "# comment1\n# comment2" > list_file
                read -p "Please fill in this list_file: "
                echo $REPLY
                ;;
        1)     if [ ! -f "$1" ]
               then  > $1 && echo -e "# comment1\n# comment2" > $1
               read -p "Please fill in "$1": "
               echo $REPLY
               else
                   if [ -f "$1" -a $(grep -v '^#' "$1" | wc -l ) -ne 0 ]
                   then
                   grep -v '^#' "$1" |
                        while read arg1 arg2 arg3 arg4
                                do f1 $arg1 $arg2 $arg3 $arg4
                                done
                   else
                   read -p "Please fill in $1 : "
                   echo $REPLY
                   fi
               fi
               ;;
        4)      echo -e "# comment1\n# comment2" > list_file
                echo $1 $2 $3 $4 >> list_file
                ;;
        5)      echo -e "# comment1\n# comment2" > $1
                f1 $2 $3 $4 $5 >> "$1"
                ;;

        *)      echo "error msg"; exit
esac

 

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LEARN ABOUT PLAN9

tr

TR(1)							      General Commands Manual							     TR(1)

NAME

       tr - translate characters

SYNOPSIS

       tr [ -cds ] [ string1 [ string2 ] ]

DESCRIPTION

       Tr  copies  the standard input to the standard output with substitution or deletion of selected characters (runes).  Input characters found
       in string1 are mapped into the corresponding characters of string2.  When string2 is short it is padded to the length of string1 by  dupli-
       cating its last character.  Any combination of the options -cds may be used:

       -c     Complement string1: replace it with a lexicographically ordered list of all other characters.

       -d     Delete from input all characters in string1.

       -s     Squeeze repeated output characters that occur in string2 to single characters.

       In  either  string a noninitial sequence -x, where x is any character (possibly quoted), stands for a range of characters: a possibly empty
       sequence of codes running from the successor of the previous code up through the code for x.  The character followed by 1,  2  or  3  octal
       digits  stands for the character whose 16-bit value is given by those digits.  The character sequence followed by 1, 2, 3, or 4 hexadecimal
       digits stands for the character whose 16-bit value is given by those digits.  A followed by any other character stands for that character.

EXAMPLES

       Replace all upper-case ASCII letters by lower-case.

	      tr A-Z a-z <mixed >lower

       Create a list of all the words in one per line in where a word is taken to be a maximal string of  alphabetics.	 String2  is  given  as  a
       quoted newline.

	      tr -cs A-Za-z '
	      ' <file1 >file2

SOURCE

       /sys/src/cmd/tr.c

SEE ALSO

       sed(1)

																	     TR(1)
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