Bash read input in case statement not working as expected
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.
Code:
defaultans=8hrs
read -e -i $defaultans -p "${bldwht}How long would you like to grant access to $USERNAME (8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk)? ${txtrst}" input
defaultans="${input:-$defaultans}"
#echo -e "${bldwht}How long would you like to grant access to $USERNAME (8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk)? ${txtrst}"
echo " "
echo " "
while true; do
read defaultans
case $defaultans in
8hrs ) break;;
24hrs ) break;;
48hrs ) break;;
72hrs ) break;;
96hrs ) break;;
1wk ) break;;
2wk ) break;;
* ) echo "You entered an invalid choice. You must choose 8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk access.";;
esac
done
Script output in debug.
Code:
+ defaultans=8hrs
+ read -e -i 8hrs -p 'How long would you like to grant access to tnew (8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk)? ' input
How long would you like to grant access to tnew (8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk)? 8hrs
+ defaultans=8hrs
+ echo ' '
+ echo ' '
+ true
+ read defaultans < script sits here and doesn't read the given defaultans above.
##Once I hit enter one time the script proceeds as expected.
+ case $defaultans in
+ echo 'You entered an invalid choice. You must choose 8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk access.'
You entered an invalid choice. You must choose 8hrs,24hrs,48hrs,72hrs,96hrs,1wk or 2wk access.
+ true
+ read defaultans
Moderator's Comments:
Please use CODE tags when displaying sample input and output as well as when displaying code segments.
greetings,
I have a script that is taking input like this:
a
b
c
d
aa
bb
aaa
bbb
ccc
ddd
and formating it to be like this:
a b c d
aa bb
aaa bbb ccc ddd (4 Replies)
I'm trying to run the logic below but get a `<' is not matched error message when I return a Y or y;
printf "Run this ? : "
read RESP
case $RESP in
Y|y)
cat <<EOF > file
today is Monday
EOF ;;
N|n)
exit 1 ;;
esac
Any ideas? (2 Replies)
i want to get user input like this
please tell which option to chose
1. mango 2. tango 3. rango
if user chooses mango
then it should execute a set of statements and again ask like this
what do you want to do
1.add 2.subtract 3.exit
when i choose exit it should goto my previous... (1 Reply)
i want to get user input like this
please tell which option to chose
1. mango 2. tango 3. rango
if user chooses mango
then it should execute a set of statements and again ask like this
what do you want to do
1.add 2.subtract 3.exit
when i choose exit it should goto my previous menu... (4 Replies)
I was trying to write a simple script which will read a text file and count the number of vowels in the file. My code is given below -
#!/bin/bash
file=$1
v=0
if
then
echo "$0 filename"
exit 1
fi
if
then
echo "$file not a file"
exit 2
fi
while read -n... (14 Replies)
I have the following bash script and it is not accepting the lines
"--"|"--""-")
"--""-"")
while
do
echo "Current Argument is ${1}"
case "$1" in
"--"|"--""-")
echo "Argument is ${1}"
shift # Skip ahead one to the next argument.
... (1 Reply)
Hi Gurus,
I have the below BASH code which does not works for upper case alphabets except Z (upper case Z).
What may be the reason. Also escape sequences like \n, \t, \b, \033(1m \033(0m (For bold letter) are not working.
case $var in
)
echo "Lower case alphabet"
;;
... (7 Replies)
Hi,
I have a script below that is running ssh <host> <command> on some servers.
Below is more or less the script. I have to modify it somehow to get rid of the 'confidential' hostnames
check_log.bash
#!/bin/bash
#
myPID=$$
parse_log ()
{
sub="parse_log"
host=${1}
... (2 Replies)
Discussion started by: newbie_01
2 Replies
LEARN ABOUT DEBIAN
plan9-cat
CAT(1) General Commands Manual CAT(1)NAME
cat, read, nobs - catenate files
SYNOPSIS
cat [ file ... ]
read [ -m ] [ -n nline ] [ file ... ]
nobs [ file ... ]
DESCRIPTION
Cat reads each file in sequence and writes it on the standard output. Thus
cat file
prints a file and
cat file1 file2 >file3
concatenates the first two files and places the result on the third.
If no file is given, cat reads from the standard input. Output is buffered in blocks matching the input.
Read copies to standard output exactly one line from the named file, default standard input. It is useful in interactive rc(1) scripts.
The -m flag causes it to continue reading and writing multiple lines until end of file; -n causes it to read no more than nline lines.
Read always executes a single write for each line of input, which can be helpful when preparing input to programs that expect line-at-a-
time data. It never reads any more data from the input than it prints to the output.
Nobs copies the named files to standard output except that it removes all backspace characters and the characters that precede them. It is
useful to use as $PAGER with the Unix version of man(1) when run inside a win (see acme(1)) window.
SOURCE
/src/cmd/cat.c
/src/cmd/read.c
/bin/nobs
SEE ALSO cp(1)DIAGNOSTICS
Read exits with status eof on end of file or, in the -n case, if it doesn't read nlines lines.
BUGS
Beware of and which destroy input files before reading them.
CAT(1)
10-05-2018
