Sponsored Content
Top Forums Shell Programming and Scripting Some Problem with Korne Shell// Post 302149488 by bakunin on Thursday 6th of December 2007 09:57:40 AM
Old 12-06-2007
*sigh*

I know, this is homework and i am aware that i am, by answering this thread, walking as thin a line as the OP. I hope to be able to push OP into the right direction without actually doing the assignment for the OP. (So much as a remark to the moderators here.)

Code:
#!/usr/bin/ksh
find * -type f -type d -path usr
if [ -a file ]
then
    echo -n "Enter the file name"
fi

The find-statement is wrong and you should indeed consult the manpage of find to out what exactly is wrong. There should even be some examples for correct find-statements there (manpages differ from system to system, on AIX there are examples, don't know about your system though). Try to analyze them.

in the line "if [ -a file ]" you refer to a STRING with the value "file" instead of a variable named "file". I suppose you intended the latter instead of the former. A variables value ins used in the Korn shell by a starting "$", like the following example:

Code:
file="/path/to/my/file"   # assign variable file a value

if [ -a $file ]    # test using the content of variable file

furthermore, read the man page of test (man test) to learn about possible test-conditions. "-a" is a binary AND and makes no sense whatsoever with a filename. An example for a "-a" which does make sense would be, if you have two test conditions and want to combine them, branching only when both are true:

if [ $a -gt 0 -a $b -le 5 ]

the first condition "$a -gt 0" is true when the content of variable a ("$a") is greater than ("-gt") zero, the second condition is true when the content of variable b ("$b") is lower or equal ("-le") to 5. The combined statement is "<condition1> -a <condition2>" and is true only if the first AND the second condition are both true.

I'll stop here and skip some other errors you made. I do hope that you understand i can't give you a complete Korn Shell lesson by just answering here in the forum. So again, my suggestion is you get yourself a copy of the book i mentioned in the first posting (or any other about the same subject according to your taste) and read it.

bakunin
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

shell problem

&& set -x && echo "enter tablespace_end_backup" >&2 Can you tell me what's mean above? thanx (1 Reply)
Discussion started by: Lee
1 Replies

2. Shell Programming and Scripting

Korne Script for format file

Hi All, I am not too familiar with Korne script so I need as much help as possible on this ;) What I want to do is: from the excel file on my computer, I want to take certain field from this xls file and put it in txt or cvs format in specific width column. Then fpt this file into the server. ... (51 Replies)
Discussion started by: CamTu
51 Replies

3. Shell Programming and Scripting

Mailing in Korne shell

All Iam using Korne shell in AIX OS. Can u give me the syntax to send a mail. Thanx in advance Regards Deepak (5 Replies)
Discussion started by: DeepakXavier
5 Replies

4. Shell Programming and Scripting

GOTO LOOP in KORNE SHELL

All Please help to provide "goto" functionality in KORN shell script. ex: 1: Command Process some command if check some variable true goto 1 else process some other Please help to implement this example in korne... (1 Reply)
Discussion started by: DeepakXavier
1 Replies

5. Shell Programming and Scripting

Problem in shell

hi, can any one tell a solution for the following : I want to append 10 spaces and a string say "ok" to 12 digit number which is stored in a varialbe & display using shell script. (1 Reply)
Discussion started by: Sandeep Kale
1 Replies

6. Shell Programming and Scripting

Fixed Length records- Korne Shell Program.

Hi, I need some help regarding in writing a Korne shell script, in determining the fixed length records in a data file. We have already utility in place, which does this work. The Code for this is as below. In the below $1 is the parameter passed to the script, which is the data file name. ... (4 Replies)
Discussion started by: nrajesh_2009
4 Replies

7. Shell Programming and Scripting

Korne Shell Problem.

Hi Everyone, I have tried with the following Code for each of the following, but that does not seem to serve the purpose. Can someone give some pointers please. 1) A Korne Shell which asks the user to enter the name of a file when searching it recursively (using the find command) in the... (3 Replies)
Discussion started by: marconi
3 Replies

8. Shell Programming and Scripting

Korne Shell...

In Korne Shell Scripting, how to search recursively in a directory, the list of files modified after a given date .. Thanks in advance.. (1 Reply)
Discussion started by: marconi
1 Replies

9. Shell Programming and Scripting

Finding modified File List after the chosen date in Korne Shell...

I am trying to write a Korne Shell asking the user for a date and a directory and then search recursively in this directory the list of files modified after the date chosen. But I am not getting good results when I Test it... #!/usr/bin/ksh echo "Enter a date (YYYYMMDD) " read date touch -t... (2 Replies)
Discussion started by: marconi
2 Replies

10. Shell Programming and Scripting

problem with if in shell

Hi, My sheel script has below statement: if; then When I run iam getting the below error: -bash: syntax error near unexpected token `then' What is wrong with that statement: Plz help me. (2 Replies)
Discussion started by: pradeep_script
2 Replies
test(1B)					     SunOS/BSD Compatibility Package Commands						  test(1B)

NAME
test - condition evaluation command SYNOPSIS
/usr/ucb/test expression expression DESCRIPTION
test evaluates the expression expression and, if its value is true, sets 0 (true) exit status; otherwise, a non-zero (false) exit status is set. test also sets a non-zero exit status if there are no arguments. When permissions are tested, the effective user ID of the process is used. All operators, flags, and brackets (brackets used as shown in the second SYNOPSIS line) must be separate arguments to the test command; normally these items are separated by spaces. USAGE
Primitives The following primitives are used to construct expression: -r filename True if filename exists and is readable. -w filename True if filename exists and is writable. -x filename True if filename exists and is executable. -f filename True if filename exists and is a regular file. Alternatively, if /usr/bin/sh users specify /usr/ucb before /usr/bin in their PATH environment variable, then test will return true if filename exists and is (not-a-directory). This is also the default for /usr/bin/csh users. -d filename True if filename exists and is a directory. -c filename True if filename exists and is a character special file. -b filename True if filename exists and is a block special file. -p filename True if filename exists and is a named pipe (fifo). -u filename True if filename exists and its set-user- ID bit is set. -g filename True if filename exists and its set-group- ID bit is set. -k filename True if filename exists and its sticky bit is set. -s filename True if filename exists and has a size greater than zero. -t[ fildes ] True if the open file whose file descriptor number is fildes (1 by default) is associated with a terminal device. -z s1 True if the length of string s1 is zero. -n s1 True if the length of the string s1 is non-zero. s1 = s2 True if strings s1 and s2 are identical. s1 != s2 True if strings s1 and s2 are not identical. s1 True if s1 is not the null string. n1 -eq n2 True if the integers n1 and n2 are algebraically equal. Any of the comparisons -ne, -gt, -ge, -lt, and -le may be used in place of -eq. Operators These primaries may be combined with the following operators: ! Unary negation operator. -a Binary and operator. -o Binary or operator (-a has higher precedence than -o). (expression) Parentheses for grouping. Notice also that parentheses are meaningful to the shell and, therefore, must be quoted. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWscpu | +-----------------------------+-----------------------------+ SEE ALSO
find(1), sh(1), attributes(5) NOTES
The not-a-directory alternative to the -f option is a transition aid for BSD applications and may not be supported in future releases. If you test a file you own (the -r , -w , or -x tests), but the permission tested does not have the owner bit set, a non-zero (false) exit status will be returned even though the file may have the group or other bit set for that permission. The correct exit status will be set if you are super-user. The = and != operators have a higher precedence than the -r through -n operators, and = and != always expect arguments; therefore, = and != cannot be used with the -r through -n operators. If more than one argument follows the -r through -n operators, only the first argument is examined; the others are ignored, unless a -a or a -o is the second argument. SunOS 5.10 1 Apr 1996 test(1B)
All times are GMT -4. The time now is 02:35 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy