05-26-2010
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
All
I want to find the occurence of comma in a variable in KORN shell. For example :
var = test,test2,test3 ....
finding occurence of comma in this variable. Result = 3 now.
Please help me to write the code.
Thanks in advance.
Regards
Deepak (2 Replies)
Discussion started by: DeepakXavier
2 Replies
2. Shell Programming and Scripting
Hi,
How will you refer one variable's value using another in unix?
For e.g
Take the case
System1_ip=172.120.20.54
And in latter part of the program while I'm using the values in a for loop
I use
i=System1
j=${i}_ip
k=$j
But K's value at the end of the run is System1_ip
I want... (2 Replies)
Discussion started by: dayanandra
2 Replies
3. Shell Programming and Scripting
in a text " Korn Shell Unix programming Manual 3° Edition"
i have found this sintax to declare a compoud variable:
variable=(
fild1 (0 Replies)
Discussion started by: ZINGARO
0 Replies
4. Shell Programming and Scripting
in a text " Korn Shell Unix programming Manual 3° Edition"
i have found this sintax to declare a compoud variable:
variable=(
fild1
fild1
)
but this sintax in ksh and sh (HP-UNIX) not work...
why?? exist another solution for this type of variable ??? (5 Replies)
Discussion started by: ZINGARO
5 Replies
5. Shell Programming and Scripting
I am using two shell scripts a.ksh and b.ksh
a.ksh
1. Sets the value
+++++++++++++++++
export USER1=abcd1
export PASSWORD=xyz
+++++++++++++++++
b.ksh
2. Second scripts calls sctipt a.ksh and uses the values set in a.ksh and pass to an executable demo... (2 Replies)
Discussion started by: kunalseth
2 Replies
6. Shell Programming and Scripting
Hi All-
First time using iSql.
I have 4 query files - some have more than 1 line of sql statements
After a bit of research it appears I can just use the -i command and specify the input file.
Questions:
Does it matter that there are multiple queries in each file? Do I need to have... (3 Replies)
Discussion started by: Cailet
3 Replies
7. Shell Programming and Scripting
hello,
i have a variable which should have following content :
var="value1"
or
var="value2"
or
var="value2:*" # example: value2:22
how can i check :
- if the content is ok (value1 / value2* )
- the two options of "value2"
when content is example "value2:22" , i want to split... (3 Replies)
Discussion started by: bora99
3 Replies
8. Shell Programming and Scripting
I'm using korn shell and I am wondering if it's possible to use a parameter passed into a function to build a variable name in a configuration file. I have the function in one source file, I'd like to have a global configuration file instead of hardcoding logins to each script.
So I have a... (7 Replies)
Discussion started by: mrevello
7 Replies
9. UNIX for Dummies Questions & Answers
Hi
I am using two shell scripts which are running on the system simultaneously. And in one of the script i am exporting an Integer Variable.
Now i want to use the variable in another script. But i cannot run the first script in the second as the first script has many other functions which... (3 Replies)
Discussion started by: Ajesh
3 Replies
10. Shell Programming and Scripting
Hi all,
I have a script which should take more than 9 command line inputs while running. Likescript.sh a s d f g h j j k l o p i u y t r e w
Now in the script if I have to access one of the input which is at position after 9, in this case say 'p' then how can I do that?
echo $12 will not work... (15 Replies)
Discussion started by: pat_pramod
15 Replies
exec(1) User Commands exec(1)
NAME
exec, eval, source - shell built-in functions to execute other commands
SYNOPSIS
sh
exec [argument...]
eval [argument...]
csh
exec command
eval argument...
source [-h] name
ksh
*exec [arg...]
*eval [arg...]
DESCRIPTION
sh
The exec command specified by the arguments is executed in place of this shell without creating a new process. Input/output arguments may
appear and, if no other arguments are given, cause the shell input/output to be modified.
The arguments to the eval built-in are read as input to the shell and the resulting command(s) executed.
csh
exec executes command in place of the current shell, which terminates.
eval reads its arguments as input to the shell and executes the resulting command(s). This is usually used to execute commands generated as
the result of command or variable substitution.
source reads commands from name. source commands may be nested, but if they are nested too deeply the shell may run out of file descrip-
tors. An error in a sourced file at any level terminates all nested source commands.
-h Place commands from the file name on the history list without executing them.
ksh
With the exec built-in, if arg is given, the command specified by the arguments is executed in place of this shell without creating a new
process. Input/output arguments may appear and affect the current process. If no arguments are given the effect of this command is to mod-
ify file descriptors as prescribed by the input/output redirection list. In this case, any file descriptor numbers greater than 2 that are
opened with this mechanism are closed when invoking another program.
The arguments to eval are read as input to the shell and the resulting command(s) executed.
On this man page, ksh(1) commands that are preceded by one or two * (asterisks) are treated specially in the following ways:
1. Variable assignment lists preceding the command remain in effect when the command completes.
2. I/O redirections are processed after variable assignments.
3. Errors cause a script that contains them to abort.
4. Words, following a command preceded by ** that are in the format of a variable assignment, are expanded with the same rules as a vari-
able assignment. This means that tilde substitution is performed after the = sign and word splitting and file name generation are not
performed.
EXIT STATUS
For ksh:
If command is not found, the exit status is 127. If command is found, but is not an executable utility, the exit status is 126. If a redi-
rection error occurs, the shell exits with a value in the range 1-125. Otherwise, exec returns a zero exit status.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO
csh(1), ksh(1), sh(1), attributes(5)
SunOS 5.10 17 Jul 2002 exec(1)