Hi All,
I am using Korn Shell HP UNIX and i am writing my scripts with filename extension as ksh or sh ..
I want to know what is the difference if i am giving ksh and sh
Other thing when we execute the shell script either we make it as executable and run directly else we give '.' or 'sh'... (2 Replies)
Hi ,
I need your help to know the exact operation of this following code ..
cat file1 | ux2dos | tr -d ''>>file2
file1 contains only one line : "DTS-PO\SPECTRUM WO 56"
the data contains a META CHAR "\" .. look at the above line.
But , The file2 output contains :... (7 Replies)
:confused:
Hi All,
i am new to unix....so i am not sure whether i am asking the related question with our forum..
My question .....Can anyone explain me about the CGI script
is it something related to Unix or Linux or some other language.
Thanks in advance
Sha (1 Reply)
Hi, I am analisying an existing script. what the below code will do?
if
can some onle tell me what -a will do here. Upto my knowledge it can be used as and.
In this case they gave a comment like-- it will check for the existance of the ref file. I feel -f need to be used to check the existence.... (2 Replies)
Hi,
I am creating two shell scripts for Database backup and the output has to be routed to nohup.out file.
We will also be running the scripts in the background as
nohup.out <script_name> &
Do I manually need to create a nohup.out file in the directory from where the scripts are going... (1 Reply)
Hi,
I'm using Ksh and I'm seeing some of code in my programme as given below.
Could you please let me know whats is this meeaing ?
(I'm new to this unix)
grep "1034" /u/kkk/bin/temp5.lst|cut -c1-2 >/u/kkk/bin/temp6.lst
if
then
echo ""
... (2 Replies)
Hi All,
I have a file cleanlogs_imgp01_files which has the contents as follows,
cold_log|/opt/elf/cold_spool
get_orion_log|/opt/elf/logs
get_coldFiles_log|/opt/elf/logs
get_coldFiles_TuesToSat_log|/opt/elf/logs
get_coldFiles_MonToSat_log|/opt/elf/logs
And when i execute this, I get the... (1 Reply)
what is the significance of %%.ksh in processname and %.ksh in processname_1 variable?
Why is it returning same value?How is it working?
processname=Testabc
export processname=${processname%%.ksh}
echo $processname #It is returning Testabc
export processname_1=${processname%.ksh}
echo... (2 Replies)
Discussion started by: vamsi.valiveti
2 Replies
LEARN ABOUT OPENDARWIN
while
while(n) Tcl Built-In Commands while(n)
__________________________________________________________________________________________________________________________________________________NAME
while - Execute script repeatedly as long as a condition is met
SYNOPSIS
while test body
_________________________________________________________________DESCRIPTION
The while command evaluates test as an expression (in the same way that expr evaluates its argument). The value of the expression must a
proper boolean value; if it is a true value then body is executed by passing it to the Tcl interpreter. Once body has been executed then
test is evaluated again, and the process repeats until eventually test evaluates to a false boolean value. Continue commands may be exe-
cuted inside body to terminate the current iteration of the loop, and break commands may be executed inside body to cause immediate termi-
nation of the while command. The while command always returns an empty string.
Note: test should almost always be enclosed in braces. If not, variable substitutions will be made before the while command starts execut-
ing, which means that variable changes made by the loop body will not be considered in the expression. This is likely to result in an
infinite loop. If test is enclosed in braces, variable substitutions are delayed until the expression is evaluated (before each loop iter-
ation), so changes in the variables will be visible. For an example, try the following script with and without the braces around $x<10:
set x 0
while {$x<10} {
puts "x is $x"
incr x
}
SEE ALSO
break(n), continue(n), for(n), foreach(n)
KEYWORDS
boolean value, loop, test, while
Tcl while(n)