Check if command is succesfull without using if statement
Here is a big problem I have. I want to write a command and execute print out the message if command is not successful. So is there a way to do following in single line:
gcc -c test.cpp
if [ $? -ne 0 ]
then
echo "this failed so badly"
fi
I know this line:
gcc test.c && [ $? -ne 0 ] && echo "Hell"
will not output anything because gcc
will be successful and [ $? -ne 0 ]
will fail thus echo
will not be executed. So how do I exectue [ $? -ne 0 ]
if gcc
fails?
Thank you in advance.
linux bash shell
add a comment |
Here is a big problem I have. I want to write a command and execute print out the message if command is not successful. So is there a way to do following in single line:
gcc -c test.cpp
if [ $? -ne 0 ]
then
echo "this failed so badly"
fi
I know this line:
gcc test.c && [ $? -ne 0 ] && echo "Hell"
will not output anything because gcc
will be successful and [ $? -ne 0 ]
will fail thus echo
will not be executed. So how do I exectue [ $? -ne 0 ]
if gcc
fails?
Thank you in advance.
linux bash shell
gcc -c test.cpp || echo FAIL
– Uncle Billy
7 mins ago
@UncleBilly can I than follow that with&&
and some more commands?
– Gox
5 mins ago
Yes, but take care because||
and&&
have the same precedence in the shell language.a || b && c
will be parsed as{ a || b; } && c
, nota || { b && c; }
– Uncle Billy
2 mins ago
{ a || b } && c
is what i want
– Gox
50 secs ago
add a comment |
Here is a big problem I have. I want to write a command and execute print out the message if command is not successful. So is there a way to do following in single line:
gcc -c test.cpp
if [ $? -ne 0 ]
then
echo "this failed so badly"
fi
I know this line:
gcc test.c && [ $? -ne 0 ] && echo "Hell"
will not output anything because gcc
will be successful and [ $? -ne 0 ]
will fail thus echo
will not be executed. So how do I exectue [ $? -ne 0 ]
if gcc
fails?
Thank you in advance.
linux bash shell
Here is a big problem I have. I want to write a command and execute print out the message if command is not successful. So is there a way to do following in single line:
gcc -c test.cpp
if [ $? -ne 0 ]
then
echo "this failed so badly"
fi
I know this line:
gcc test.c && [ $? -ne 0 ] && echo "Hell"
will not output anything because gcc
will be successful and [ $? -ne 0 ]
will fail thus echo
will not be executed. So how do I exectue [ $? -ne 0 ]
if gcc
fails?
Thank you in advance.
linux bash shell
linux bash shell
asked 12 mins ago
GoxGox
1736
1736
gcc -c test.cpp || echo FAIL
– Uncle Billy
7 mins ago
@UncleBilly can I than follow that with&&
and some more commands?
– Gox
5 mins ago
Yes, but take care because||
and&&
have the same precedence in the shell language.a || b && c
will be parsed as{ a || b; } && c
, nota || { b && c; }
– Uncle Billy
2 mins ago
{ a || b } && c
is what i want
– Gox
50 secs ago
add a comment |
gcc -c test.cpp || echo FAIL
– Uncle Billy
7 mins ago
@UncleBilly can I than follow that with&&
and some more commands?
– Gox
5 mins ago
Yes, but take care because||
and&&
have the same precedence in the shell language.a || b && c
will be parsed as{ a || b; } && c
, nota || { b && c; }
– Uncle Billy
2 mins ago
{ a || b } && c
is what i want
– Gox
50 secs ago
gcc -c test.cpp || echo FAIL
– Uncle Billy
7 mins ago
gcc -c test.cpp || echo FAIL
– Uncle Billy
7 mins ago
@UncleBilly can I than follow that with
&&
and some more commands?– Gox
5 mins ago
@UncleBilly can I than follow that with
&&
and some more commands?– Gox
5 mins ago
Yes, but take care because
||
and &&
have the same precedence in the shell language. a || b && c
will be parsed as { a || b; } && c
, not a || { b && c; }
– Uncle Billy
2 mins ago
Yes, but take care because
||
and &&
have the same precedence in the shell language. a || b && c
will be parsed as { a || b; } && c
, not a || { b && c; }
– Uncle Billy
2 mins ago
{ a || b } && c
is what i want– Gox
50 secs ago
{ a || b } && c
is what i want– Gox
50 secs ago
add a comment |
0
active
oldest
votes
Your Answer
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "106"
};
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: false,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: null,
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
});
}
});
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%2funix.stackexchange.com%2fquestions%2f497110%2fcheck-if-command-is-succesfull-without-using-if-statement%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
0
active
oldest
votes
0
active
oldest
votes
active
oldest
votes
active
oldest
votes
Thanks for contributing an answer to Unix & Linux Stack Exchange!
- 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.
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%2funix.stackexchange.com%2fquestions%2f497110%2fcheck-if-command-is-succesfull-without-using-if-statement%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
gcc -c test.cpp || echo FAIL
– Uncle Billy
7 mins ago
@UncleBilly can I than follow that with
&&
and some more commands?– Gox
5 mins ago
Yes, but take care because
||
and&&
have the same precedence in the shell language.a || b && c
will be parsed as{ a || b; } && c
, nota || { b && c; }
– Uncle Billy
2 mins ago
{ a || b } && c
is what i want– Gox
50 secs ago