hello guys,
i am having the below piece of code
In the abve code, read statement is not working i.e not waiting for user to enter input.
,i tested exit status its 1.
could anyone help me to do this
Thanks in advance
You haven't said what shell you're using, but assuming it is a shell that recognizes basic Bourne shell syntax you have several problems. You didn't mention that this script complained about an unknown error command and an unknown echoPress y /n command. Had used correct syntax for defining a function, you also need a main function or utility that is not shown in this code fragment. To get correct the syntax errors, try:
Although some of the changes here are editorial, the error() must appear on a single line with no space between the final "r" and the "()", and there must be a space after the echo.
I understand this question probably poses some child like stupidity, but I can't get this if statement to work for love or money.
#!/bin/ksh
echo "Input either 1 or 2"
read Num
if ; then
echo "Message 1"
if ; then
echo "Message 2"
else
echo "false"
fi
$ ksh decisions
Input either 1... (6 Replies)
im trying to write an until statement which dont go onto the next stage until the user inputs a certain phrase. It is then stored in an array. Ive come up with this code so far but its not working and i dont know why.
read in1
until
do
echo "Incorrect, try again"
... (2 Replies)
Pls this is emergency.I have written a script which is taking input from another script. and the contents of my second script are acting as functions to my main script.Now the problem is that in one of the functions i want the script ececution to stop and start when user enters any character r... (2 Replies)
I have a script consisting of certain functions whose input is a file at same location. In that file i have written the name of anothe file at same location. The third file contains a word which act as a function in the first script.Let me give an example
i have a scrip file say 1.sh in which i am... (7 Replies)
Hi.
With the help of this group I have created a shell script to find the factorial of a number.
OK. Then I got wild.;) I tried to put in a check to make sure the entry is a number.
read num
If )) then
echo "This is not a valid number. Try again."
fi
while (( $var <= $num)) more... (5 Replies)
Hi .I am trying to check the first arguments =-s and the third =-d,but it doesnt work ,any idea why
It gives me if: Missing file name
Thanks
#case -s and files
if( $1 == "-s" && $3 != "-d" ) then
echo "case s"
endif (1 Reply)
#! /bin/ksh
rm -f ./xyz file --- this line is working
// Below any if stmt is not working.
if
then
echo " blah blah "
fi
or I replaced above if with
if
then
echo "dir exists"
fi
This is also not working.
I am new to KSH. So can someone help why if stmt is not... (31 Replies)
hi,
this is my script #!/bin/ksh
cat temp_file.dat | while read line
do
read test
if ]; then
break
else echo "ERROR"
fi
done
when i execute this code , the script does wait for the user input . it directly prints "ERROR" and terminates after the no. of times as there... (3 Replies)
I'm looking for some help in figuring why my little bit of code will not process any entries other then the first one in my list.
while read line ;do
hostname=${line//\"}
a=`ssh user@$hostname uptime;echo $?`
if ];then
dt=`date`
touch... (6 Replies)
I'm having an issue with bash read input when using a case statement.
The script halts and doesn't read the input on the first loop. if I hit enter then the scripts starts to respond as expected. Need some help here.
defaultans=8hrs
read -e -i $defaultans -p "${bldwht}How long would you like... (5 Replies)
Discussion started by: woodson2
5 Replies
LEARN ABOUT DEBIAN
shell-quote
SHELL-QUOTE(1p) User Contributed Perl Documentation SHELL-QUOTE(1p)NAME
shell-quote - quote arguments for safe use, unmodified in a shell command
SYNOPSIS
shell-quote [switch]... arg...
DESCRIPTION
shell-quote lets you pass arbitrary strings through the shell so that they won't be changed by the shell. This lets you process commands
or files with embedded white space or shell globbing characters safely. Here are a few examples.
EXAMPLES
ssh preserving args
When running a remote command with ssh, ssh doesn't preserve the separate arguments it receives. It just joins them with spaces and
passes them to "$SHELL -c". This doesn't work as intended:
ssh host touch 'hi there' # fails
It creates 2 files, hi and there. Instead, do this:
cmd=`shell-quote touch 'hi there'`
ssh host "$cmd"
This gives you just 1 file, hi there.
process find output
It's not ordinarily possible to process an arbitrary list of files output by find with a shell script. Anything you put in $IFS to
split up the output could legitimately be in a file's name. Here's how you can do it using shell-quote:
eval set -- `find -type f -print0 | xargs -0 shell-quote --`
debug shell scripts
shell-quote is better than echo for debugging shell scripts.
debug() {
[ -z "$debug" ] || shell-quote "debug:" "$@"
}
With echo you can't tell the difference between "debug 'foo bar'" and "debug foo bar", but with shell-quote you can.
save a command for later
shell-quote can be used to build up a shell command to run later. Say you want the user to be able to give you switches for a command
you're going to run. If you don't want the switches to be re-evaluated by the shell (which is usually a good idea, else there are
things the user can't pass through), you can do something like this:
user_switches=
while [ $# != 0 ]
do
case x$1 in
x--pass-through)
[ $# -gt 1 ] || die "need an argument for $1"
user_switches="$user_switches "`shell-quote -- "$2"`
shift;;
# process other switches
esac
shift
done
# later
eval "shell-quote some-command $user_switches my args"
OPTIONS --debug
Turn debugging on.
--help
Show the usage message and die.
--version
Show the version number and exit.
AVAILABILITY
The code is licensed under the GNU GPL. Check http://www.argon.org/~roderick/ or CPAN for updated versions.
AUTHOR
Roderick Schertler <roderick@argon.org>
perl v5.8.4 2005-05-03 SHELL-QUOTE(1p)