unary operator expected with integerrs and arrays
0
So I wrote the following code :
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr a + 1`
done
And get the following Error, And I have no idea why it didn't work.
The first name is printed, and the others are not.
for loop
fulmetall
expr: non-integer argument
./for_loop.sh: line 8: [: -lt: unary operator expected
arrays bash unix
asked Jan 19 at 21:11
ablil98ablil98
536
add a comment |
0
So I wrote the following code :
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr a + 1`
done
And get the following Error, And I have no idea why it didn't work.
The first name is printed, and the others are not.
for loop
fulmetall
expr: non-integer argument
./for_loop.sh: line 8: [: -lt: unary operator expected
arrays bash unix
asked Jan 19 at 21:11
ablil98ablil98
536
4
Useexpr $a...instead of justaor save yourself some future trouble and use arithmetic expansion:((a++))ora=$((a+1)).
– PesaThe
Jan 19 at 21:18
add a comment |
0
0
0
So I wrote the following code :
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr a + 1`
done
And get the following Error, And I have no idea why it didn't work.
The first name is printed, and the others are not.
for loop
fulmetall
expr: non-integer argument
./for_loop.sh: line 8: [: -lt: unary operator expected
arrays bash unix
asked Jan 19 at 21:11
ablil98ablil98
536
So I wrote the following code :
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr a + 1`
done
And get the following Error, And I have no idea why it didn't work.
The first name is printed, and the others are not.
for loop
fulmetall
expr: non-integer argument
./for_loop.sh: line 8: [: -lt: unary operator expected
arrays bash unix
arrays bash unix
asked Jan 19 at 21:11
ablil98ablil98
536
asked Jan 19 at 21:11
ablil98ablil98
536
asked Jan 19 at 21:11
ablil98ablil98
536
asked Jan 19 at 21:11
ablil98ablil98
536
asked Jan 19 at 21:11
ablil98ablil98
536
536
4
Useexpr $a...instead of justaor save yourself some future trouble and use arithmetic expansion:((a++))ora=$((a+1)).
– PesaThe
Jan 19 at 21:18
add a comment |
4
Useexpr $a...instead of justaor save yourself some future trouble and use arithmetic expansion:((a++))ora=$((a+1)).
– PesaThe
Jan 19 at 21:18
4
4
Use
expr $a... instead of just a or save yourself some future trouble and use arithmetic expansion: ((a++)) or a=$((a+1)).– PesaThe
Jan 19 at 21:18
Use
expr $a... instead of just a or save yourself some future trouble and use arithmetic expansion: ((a++)) or a=$((a+1)).– PesaThe
Jan 19 at 21:18
add a comment |
1 Answer
1
active
oldest
votes
1
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr $a + 1`
done
answered Jan 19 at 21:18
TDKTDK
748218
thank you it worked
– ablil98
Jan 19 at 21:21
add a comment |
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54271424%2funary-operator-expected-with-integerrs-and-arrays%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
1
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr $a + 1`
done
answered Jan 19 at 21:18
TDKTDK
748218
thank you it worked
– ablil98
Jan 19 at 21:21
add a comment |
1
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr $a + 1`
done
answered Jan 19 at 21:18
TDKTDK
748218
thank you it worked
– ablil98
Jan 19 at 21:21
add a comment |
1
1
1
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr $a + 1`
done
answered Jan 19 at 21:18
TDKTDK
748218
#!/bin/bash
echo "for loop"
names=("fulmetall" "alphonse" "flame alchemesit" "king bradely" "hoenheim")
a=0
while [ $a -lt 5 ];
do
echo ${names[$a]}
a=`expr $a + 1`
done
answered Jan 19 at 21:18
TDKTDK
748218
answered Jan 19 at 21:18
TDKTDK
748218
answered Jan 19 at 21:18
TDKTDK
748218
answered Jan 19 at 21:18
TDKTDK
748218
748218
thank you it worked
– ablil98
Jan 19 at 21:21
add a comment |
thank you it worked
– ablil98
Jan 19 at 21:21
thank you it worked
– ablil98
Jan 19 at 21:21
thank you it worked
– ablil98
Jan 19 at 21:21
add a comment |
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f54271424%2funary-operator-expected-with-integerrs-and-arrays%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
4
Use
expr $a...instead of justaor save yourself some future trouble and use arithmetic expansion:((a++))ora=$((a+1)).– PesaThe
Jan 19 at 21:18