if elseif fi Post: 302485409

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Top Forums Shell Programming and Scripting if elseif fi Post 302485409 by methyl on Wednesday 5th of January 2011 06:50:23 AM

01-05-2011

Registered User

There were a number of issues (missing "then", orphaned "elif" , wrong answer displayed etc.). In the end it is much easier to use a "case" statement for the options.
For rapid testing I have surrounded this example menu in a do-done loop and removed lots of "exit" statements. There are now no "else" or "elif" statements in the script which makes it much easier to follow.

Code:

while true
do

echo ""
echo "1.FILE PERMISSION"
echo "2.FILE INODE NUMBER"
echo "3.FILE SIZE"
echo "4.FILE OWNER"
echo " Enter what do you want from the option"
read num

case $num in
1)
    echo " Enter filename you want permissions for : "
    read file1
    if [ ! -f $file1 ]
    then
        echo " FILE NOT FOUND"
    fi
    echo " FILE PERMISSIONS for $file1 = `ls -ltr $file1 | awk '{print $1}'` "
    ;;
2)
    echo " Enter filename for which you want INODE NUMBER for : "
    read file1
    if [ ! -f $file1 ]
    then
        echo " FILE NOT FOUND"
    fi
    echo " FILE INODE NUMBER for $file1 = `ls -il $file1 | awk '{print $1}'` "
    ;;
3)
    echo " Enter filename for which you want SIZE  : "
    read file1
    if [ ! -f $file1 ]
    then
        echo " FILE NOT FOUND"
    fi
    echo " FILE SIZE for $file1 = `ls -lad $file1 | awk '{print $5}'` "
    ;;
4)
    echo " Enter filename for which you want OWNER for : "
    read file1
    if [ ! -f $file1 ]
    then
        echo " FILE NOT FOUND"
    fi
    echo " FILE OWNER for $file1 = `ls -lad $file1 | awk '{print $3}'` "
    ;;
*)
    echo "You have not chosen from the list"
    exit 0
    ;;
esac
#
done

@gcvinayak
Please start a new thread in future. Just realised that this is a completely different subject.

Last edited by methyl; 01-05-2011 at 07:57 AM..

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LEARN ABOUT ULTRIX

diff3

diff3(1)						      General Commands Manual							  diff3(1)

Name
       diff3 - 3-way differential file comparison

Syntax
       diff3 [-ex3] file1 file2 file3

Description
       The command compares three versions of a file, and publishes the ranges of text that disagree, flagged with the following codes:

	  ====	      all three files differ

	  ====1       file1 is different

	  ====2       file2 is different

	  ====3       file3 is different

       The type of change needed to convert a given range of a given file to some other is indicated in one of these ways:

	  f : n1 a    Text is to be appended after line number n1 in file f, where f = 1, 2, or 3.

	  f : n1 , n2 c
		      Text is to be changed in the range line n1 to line n2.  If n1 = n2, the range may be abbreviated to n1.

       The original contents of the range follows immediately after a c indication.  When the contents of two files are identical, the contents of
       the lower-numbered file is suppressed.

Options
       -3   Produces an editor script containing the changes between file1 and file2 that are to be incorporated into file3.

       -e	   Produces an editor script containing the changes between file2 and file3 that are to be incorporated into file1.

       -x	   Produces an editor script containing the changes among all three files.

Examples
       Under the -e option, publishes a script for the editor that incorporates into file1 all changes between file2 and  file3  -  that  is,  the
       changes	that would normally be flagged ==== and ====3.	Option -x (-3) produces a script to incorporate only changes flagged ==== (====3).
       The following command applies the resulting script to `file1':
       (cat script; echo '1,$p') | ed - file1

Restrictions
       Text lines that consist of a single `.'	defeat -e.

Files
       /tmp/d3?????
       /usr/lib/diff3

See Also
       cmp(1), comm(1), diff(1), dffmk(1), join(1), sccsdiff(1), uniq(1)

																	  diff3(1)