Mixing
Getting the input from one argument and only one argument
0
This is a function from my script:
This is just a function from a script I am writing. Basically I am trying to get the user to only type one argument if it is more than one it has to output an error and if it doesn't have an argument that is also an error. When I run the script I get:
a syntax error at the elif [ $# -ne 1]; then] line
linux bash shell debian
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
add a comment |
0
This is a function from my script:
This is just a function from a script I am writing. Basically I am trying to get the user to only type one argument if it is more than one it has to output an error and if it doesn't have an argument that is also an error. When I run the script I get:
a syntax error at the elif [ $# -ne 1]; then] line
linux bash shell debian
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
Welcome to Stack Overflow! Please take the tour, look around, and read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help
– Andreas
Nov 20 '18 at 3:10
We also recommend shellcheck.net as a first stop for any bash syntax errors
– jeremysprofile
Nov 20 '18 at 3:28
Based on the requirements, it looks like you should be using -eq instead of -ne. Right? You want to do something if they enter a single parameter. Also, the syntax of your if statement and your elif statement are inconsistent. It looks like your if statement is missing a semi-colon between the test and the then.
– Mark
Nov 20 '18 at 4:26
Replace image with its text.
– Cyrus
Nov 20 '18 at 5:15
add a comment |
0
0
0
This is a function from my script:
This is just a function from a script I am writing. Basically I am trying to get the user to only type one argument if it is more than one it has to output an error and if it doesn't have an argument that is also an error. When I run the script I get:
a syntax error at the elif [ $# -ne 1]; then] line
linux bash shell debian
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
This is a function from my script:
This is just a function from a script I am writing. Basically I am trying to get the user to only type one argument if it is more than one it has to output an error and if it doesn't have an argument that is also an error. When I run the script I get:
a syntax error at the elif [ $# -ne 1]; then] line
linux bash shell debian
linux bash shell debian
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
edited Nov 20 '18 at 3:11
robert jacinto
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
asked Nov 20 '18 at 3:07
robert jacintorobert jacinto
11
11
Welcome to Stack Overflow! Please take the tour, look around, and read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help
– Andreas
Nov 20 '18 at 3:10
We also recommend shellcheck.net as a first stop for any bash syntax errors
– jeremysprofile
Nov 20 '18 at 3:28
Based on the requirements, it looks like you should be using -eq instead of -ne. Right? You want to do something if they enter a single parameter. Also, the syntax of your if statement and your elif statement are inconsistent. It looks like your if statement is missing a semi-colon between the test and the then.
– Mark
Nov 20 '18 at 4:26
Replace image with its text.
– Cyrus
Nov 20 '18 at 5:15
add a comment |
Welcome to Stack Overflow! Please take the tour, look around, and read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help
– Andreas
Nov 20 '18 at 3:10
We also recommend shellcheck.net as a first stop for any bash syntax errors
– jeremysprofile
Nov 20 '18 at 3:28
Based on the requirements, it looks like you should be using -eq instead of -ne. Right? You want to do something if they enter a single parameter. Also, the syntax of your if statement and your elif statement are inconsistent. It looks like your if statement is missing a semi-colon between the test and the then.
– Mark
Nov 20 '18 at 4:26
Replace image with its text.
– Cyrus
Nov 20 '18 at 5:15
Welcome to Stack Overflow! Please take the tour, look around, and read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help
– Andreas
Nov 20 '18 at 3:10
Welcome to Stack Overflow! Please take the tour, look around, and read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help
– Andreas
Nov 20 '18 at 3:10
We also recommend shellcheck.net as a first stop for any bash syntax errors
– jeremysprofile
Nov 20 '18 at 3:28
We also recommend shellcheck.net as a first stop for any bash syntax errors
– jeremysprofile
Nov 20 '18 at 3:28
Based on the requirements, it looks like you should be using -eq instead of -ne. Right? You want to do something if they enter a single parameter. Also, the syntax of your if statement and your elif statement are inconsistent. It looks like your if statement is missing a semi-colon between the test and the then.
– Mark
Nov 20 '18 at 4:26
Based on the requirements, it looks like you should be using -eq instead of -ne. Right? You want to do something if they enter a single parameter. Also, the syntax of your if statement and your elif statement are inconsistent. It looks like your if statement is missing a semi-colon between the test and the then.
– Mark
Nov 20 '18 at 4:26
Replace image with its text.
– Cyrus
Nov 20 '18 at 5:15
Replace image with its text.
– Cyrus
Nov 20 '18 at 5:15
add a comment |
1 Answer
1
active
oldest
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0
As I commented, your code is missing a semi in the first if statement and the -ne should be a -eq. Here is the working code and a set of test cases:
$ cat student_check.sh
Student_Check() {
if [ $# -eq 0 ] ; then
echo "No file specified"
elif [ $# -eq 1 ] ; then
echo success
else
echo "Invalid input"
exit
fi
}
echo Test 0
Student_Check
echo Test 1
Student_Check 1
echo Test 2
Student_Check 1 2
$ ./student_check.sh
Test 0
No file specified
Test 1
success
Test 2
Invalid input
answered Nov 20 '18 at 13:41
MarkMark
78759
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
As I commented, your code is missing a semi in the first if statement and the -ne should be a -eq. Here is the working code and a set of test cases:
$ cat student_check.sh
Student_Check() {
if [ $# -eq 0 ] ; then
echo "No file specified"
elif [ $# -eq 1 ] ; then
echo success
else
echo "Invalid input"
exit
fi
}
echo Test 0
Student_Check
echo Test 1
Student_Check 1
echo Test 2
Student_Check 1 2
$ ./student_check.sh
Test 0
No file specified
Test 1
success
Test 2
Invalid input
answered Nov 20 '18 at 13:41
MarkMark
78759
add a comment |
0
As I commented, your code is missing a semi in the first if statement and the -ne should be a -eq. Here is the working code and a set of test cases:
$ cat student_check.sh
Student_Check() {
if [ $# -eq 0 ] ; then
echo "No file specified"
elif [ $# -eq 1 ] ; then
echo success
else
echo "Invalid input"
exit
fi
}
echo Test 0
Student_Check
echo Test 1
Student_Check 1
echo Test 2
Student_Check 1 2
$ ./student_check.sh
Test 0
No file specified
Test 1
success
Test 2
Invalid input
answered Nov 20 '18 at 13:41
MarkMark
78759
add a comment |
0
0
0
As I commented, your code is missing a semi in the first if statement and the -ne should be a -eq. Here is the working code and a set of test cases:
$ cat student_check.sh
Student_Check() {
if [ $# -eq 0 ] ; then
echo "No file specified"
elif [ $# -eq 1 ] ; then
echo success
else
echo "Invalid input"
exit
fi
}
echo Test 0
Student_Check
echo Test 1
Student_Check 1
echo Test 2
Student_Check 1 2
$ ./student_check.sh
Test 0
No file specified
Test 1
success
Test 2
Invalid input
answered Nov 20 '18 at 13:41
MarkMark
78759
As I commented, your code is missing a semi in the first if statement and the -ne should be a -eq. Here is the working code and a set of test cases:
$ cat student_check.sh
Student_Check() {
if [ $# -eq 0 ] ; then
echo "No file specified"
elif [ $# -eq 1 ] ; then
echo success
else
echo "Invalid input"
exit
fi
}
echo Test 0
Student_Check
echo Test 1
Student_Check 1
echo Test 2
Student_Check 1 2
$ ./student_check.sh
Test 0
No file specified
Test 1
success
Test 2
Invalid input
answered Nov 20 '18 at 13:41
MarkMark
78759
answered Nov 20 '18 at 13:41
MarkMark
78759
answered Nov 20 '18 at 13:41
MarkMark
78759
answered Nov 20 '18 at 13:41
MarkMark
78759
78759
add a comment |
add a comment |
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Welcome to Stack Overflow! Please take the tour, look around, and read through the Help Center, in particular How do I ask a good question? If you run into a specific problem, research it thoroughly, search thoroughly here, and if you're still stuck post your code and a description of the problem. Also, remember to include Minimum, Complete, Verifiable Example. People will be glad to help
– Andreas
Nov 20 '18 at 3:10
We also recommend shellcheck.net as a first stop for any bash syntax errors
– jeremysprofile
Nov 20 '18 at 3:28
Based on the requirements, it looks like you should be using -eq instead of -ne. Right? You want to do something if they enter a single parameter. Also, the syntax of your if statement and your elif statement are inconsistent. It looks like your if statement is missing a semi-colon between the test and the then.
– Mark
Nov 20 '18 at 4:26
Replace image with its text.
– Cyrus
Nov 20 '18 at 5:15