hi all,
i am trying to figure out what exactly does this chunk of code which sits in a shell script does. Am not very good at scripting so could someone explain what the below is/does ?? its a ksh (i.e #!/bin/ksh) and sits on a solaris 9 box.
REFRESH=FALSE
((C=0))
while getopts vrb:c:f: OPT
do
case $OPT in
r|-r) REFRESH=TRUE; ((C+=1)) ;;
esac
done
thanks in advance,
Cesar.
getopts is used for parsing for the arguements. The colon specifies that it requires an arguement. Here in your code if you specify the option b or c or f , then it is must that you pass the respective arguements to them.
$OPT is used for the option you are choosing. here if u choose the option r ot -r then setting the flag to true and increasing the count.
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A-Za-z\' <--- what is this??
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-c --complement
-s, --squeeze-repeats
replace each input sequence of a repeated character that is... (0 Replies)
how does below tr command replace nonletters with newlines?
I think I understand tr -cs '\n' part.. but what is
A-Za-z\' <--- what is this??
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-c --complement
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replace each input sequence of a repeated character that is... (1 Reply)
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file1='Jane Mid Doe.txt'
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my_cd=' '
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esac
done
if ; then
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echo " >>> ERROR - Hello"
exit 99
fi
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Hello,
I have recently come across this awk program. Can some one shed some light on what is taking place.
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Best Regards,
jaysunn (1 Reply)
Hi all
I am new to egrep can someone please explain me what does the below Statement do
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Thanks in advance
Sri
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I have a case where the script has to run in two modes as options and based on the mode, script excepts optional and mandatory arguments.
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script.sh -b -i <value4>
a and b are the modes of the script execution.
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Hi,
I need more explination on it, how it works
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Rgds,
LKR (1 Reply)
dear sir,
I am new to unix zone. need some explanation on the function used.
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#!/usr/bin/ksh
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Discussion started by: gowthamsoft
3 Replies
LEARN ABOUT BSD
suspend
suspend(1) User Commands suspend(1)NAME
suspend - shell built-in function to halt the current shell
SYNOPSIS
sh
suspend
csh
suspend
ksh
suspend
DESCRIPTION
sh
Stops the execution of the current shell (but not if it is the login shell).
csh
Stop the shell in its tracks, much as if it had been sent a stop signal with ^Z. This is most often used to stop shells started by su.
ksh
Stops the execution of the current shell (but not if it is the login shell).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO csh(1), kill(1), ksh(1), sh(1), su(1M), attributes(5)SunOS 5.10 15 Apr 1994 suspend(1)