I was wondering how can we get a fall trough case structure.
Eg: If we have two cases A and B and a default; if I do not break after A, it should execute all the statements of A as well as B if I break after B else fall through even lower.
I tried this:
The output I get is :
I guess the ")" pointed out by the error is the one I have highlighted above in the code; and it's problematic because of the missing ";;" after first case.
Could you please tell me what I should be doing to correct it!
Hello,
I am having a problem setting a range of numbers for the "case" structure.
I can use with no problems, but
when I use it doesn't work???
Does the case struture allow numeric ranges?
eg:
echo -e "enter number between 0 and 60: \c"
read $answer
case $answer in
) echo... (2 Replies)
Hi all
Is it possible to copy a structure of a directory only.
e.g.
I have a file with the following entries that is a result of a find :-
/dir1/dir2/file.dbf
/dir1/dir2/dir3/file1.dbf
/dir1/file.dbf
I want to copy these to a directory and keep the structure however starting at a new dir... (8 Replies)
Hi,
Can anyone help me with the following case structure?
echo "Please enter the date for which you want the Report:\c"
read dat
d1=`echo $dat|cut -c7-8`
m1=`echo $dat|cut -c5-6`
y1=`echo $dat|cut -c1-4`
yr=`expr "$d1" - 1`
case "$yr" in
0)
MONTH=`expr "$m1" - 1`... (4 Replies)
Hello Groups
I am trying to find out ways of comparing a value from a 'c' structure to a value in another 'C' structure. the 'C' structure can be a List or liked list as it contains lot many records.
if we loop it in both the structures it is going to consume time.
I am looking for a simple... (3 Replies)
Hello Experts,
I ve been trying to build another shell where I am using the following code.
transact="tv5cpc1"
case "$transact" in
"...cp..")
xActType=""
;;
"...de..")
xActType="sp_dep"
;;
"...ep..")
xActType="sp_epa"
;;
"....v.")
... (4 Replies)
Hi,
while true
do
printf "$FBOLD\nPlease enter the minutes (0-59): $FREG"
read MIN
case "$MIN" in
||s) break 2;;
*)
echo ""
echo "Invalid minutes, please try again.";;
esac
done
In the above... (4 Replies)
Hi folks,
I am new to bash scripting so please excuse my question.
Is there any chance to combine a case structure with the read command?
Like
case (read -p "" variable) in
x)
Thx! (7 Replies)
Discussion started by: haukee
7 Replies
LEARN ABOUT FREEBSD
getopt
GETOPT(1) BSD General Commands Manual GETOPT(1)NAME
getopt -- parse command options
SYNOPSIS
args=`getopt optstring $*` ; errcode=$?; set -- $args
DESCRIPTION
The getopt utility is used to break up options in command lines for easy parsing by shell procedures, and to check for legal options.
Optstring is a string of recognized option letters (see getopt(3)); if a letter is followed by a colon, the option is expected to have an
argument which may or may not be separated from it by white space. The special option '--' is used to delimit the end of the options. The
getopt utility will place '--' in the arguments at the end of the options, or recognize it if used explicitly. The shell arguments ($1 $2
...) are reset so that each option is preceded by a '-' and in its own shell argument; each option argument is also in its own shell argu-
ment.
EXIT STATUS
The getopt utility prints an error message on the standard error output and exits with status > 0 when it encounters an option letter not
included in optstring.
EXAMPLES
The following code fragment shows how one might process the arguments for a command that can take the options -a and -b, and the option -o,
which requires an argument.
args=`getopt abo: $*`
# you should not use `getopt abo: "$@"` since that would parse
# the arguments differently from what the set command below does.
if [ $? -ne 0 ]; then
echo 'Usage: ...'
exit 2
fi
set -- $args
# You cannot use the set command with a backquoted getopt directly,
# since the exit code from getopt would be shadowed by those of set,
# which is zero by definition.
while true; do
case "$1" in
-a|-b)
echo "flag $1 set"; sflags="${1#-}$sflags"
shift
;;
-o)
echo "oarg is '$2'"; oarg="$2"
shift; shift
;;
--)
shift; break
;;
esac
done
echo "single-char flags: '$sflags'"
echo "oarg is '$oarg'"
This code will accept any of the following as equivalent:
cmd -aoarg file file
cmd -a -o arg file file
cmd -oarg -a file file
cmd -a -oarg -- file file
SEE ALSO getopts(1), sh(1), getopt(3)HISTORY
Written by Henry Spencer, working from a Bell Labs manual page. Behavior believed identical to the Bell version. Example changed in FreeBSD
version 3.2 and 4.0.
BUGS
Whatever getopt(3) has.
Arguments containing white space or embedded shell metacharacters generally will not survive intact; this looks easy to fix but is not. Peo-
ple trying to fix getopt or the example in this manpage should check the history of this file in FreeBSD.
The error message for an invalid option is identified as coming from getopt rather than from the shell procedure containing the invocation of
getopt; this again is hard to fix.
The precise best way to use the set command to set the arguments without disrupting the value(s) of shell options varies from one shell ver-
sion to another.
Each shellscript has to carry complex code to parse arguments halfway correctly (like the example presented here). A better getopt-like tool
would move much of the complexity into the tool and keep the client shell scripts simpler.
BSD January 26, 2011 BSD