Run script for each line and do something based on output
I have a Python script that someone else made. Inside my bash script I would like to execute it for each line in a txt file, using each line as an argument. Then based on the output of the python script, add that line to a new txt file.
At the moment I run
sudo python tester.py 10.0.1.1 999 user pass
Where "10.0.1.1 999 user pass" would be a line in my txt file.
If that succeeds it spits out "SUCCESS!". This is where I would like to copy that line to a new file.
Now, to make it more complicated I would like to change the python script based on the start of the line. This isnt 100% needed but saves me spliiting the txt file before hand.
eg. If the line starts with "10" use script 1. If it starts with "192" use script 2. Both have the same "SUCCESS!" output.
I have tried this
cat list.txt | while read line
do
python tester.py $line
if $(...) == "S"*
then
$line >> good.txt
fi
done
Something isnt right though.
Hopefully that made enough sense for someone to be able to help me.
Chris
python linux bash
asked Nov 20 at 20:09
Chris
486
|
show 2 more comments
I have a Python script that someone else made. Inside my bash script I would like to execute it for each line in a txt file, using each line as an argument. Then based on the output of the python script, add that line to a new txt file.
At the moment I run
sudo python tester.py 10.0.1.1 999 user pass
Where "10.0.1.1 999 user pass" would be a line in my txt file.
If that succeeds it spits out "SUCCESS!". This is where I would like to copy that line to a new file.
Now, to make it more complicated I would like to change the python script based on the start of the line. This isnt 100% needed but saves me spliiting the txt file before hand.
eg. If the line starts with "10" use script 1. If it starts with "192" use script 2. Both have the same "SUCCESS!" output.
I have tried this
cat list.txt | while read line
do
python tester.py $line
if $(...) == "S"*
then
$line >> good.txt
fi
done
Something isnt right though.
Hopefully that made enough sense for someone to be able to help me.
Chris
python linux bash
asked Nov 20 at 20:09
Chris
486
2
StackOverflow is not a free coding service. SO expects you to try to solve your own problem first. Please update your question to show what you have already tried in a Minimal, Complete, and Verifiable example. For further information, please see How to Ask, and take the tour :)
– Barmar
Nov 20 at 20:11
Use awhile readloop to read the file line by line into variables. You can test the first variable to decide which python script to run. Then run the script, passing the variables as arguments. Use$(...)to capture the output, and anifstatement to test if it'sSUCCESS!and then write to the file.
– Barmar
Nov 20 at 20:13
Nothing there is anything more than basic shell scripting. What part of it is confusing you?
– Barmar
Nov 20 at 20:14
I am still a beginner. The little I know if from looking at examples. I have tried this "cat list.txt | while read line; do python tester.py "$line"; done" but nothing prints
– Chris
Nov 20 at 20:20
Don't put$linein quotes. The python script expects 4 separate arguments, that will combine the entire line as one argument.
– Barmar
Nov 20 at 20:22
|
show 2 more comments
I have a Python script that someone else made. Inside my bash script I would like to execute it for each line in a txt file, using each line as an argument. Then based on the output of the python script, add that line to a new txt file.
At the moment I run
sudo python tester.py 10.0.1.1 999 user pass
Where "10.0.1.1 999 user pass" would be a line in my txt file.
If that succeeds it spits out "SUCCESS!". This is where I would like to copy that line to a new file.
Now, to make it more complicated I would like to change the python script based on the start of the line. This isnt 100% needed but saves me spliiting the txt file before hand.
eg. If the line starts with "10" use script 1. If it starts with "192" use script 2. Both have the same "SUCCESS!" output.
I have tried this
cat list.txt | while read line
do
python tester.py $line
if $(...) == "S"*
then
$line >> good.txt
fi
done
Something isnt right though.
Hopefully that made enough sense for someone to be able to help me.
Chris
python linux bash
asked Nov 20 at 20:09
Chris
486
I have a Python script that someone else made. Inside my bash script I would like to execute it for each line in a txt file, using each line as an argument. Then based on the output of the python script, add that line to a new txt file.
At the moment I run
sudo python tester.py 10.0.1.1 999 user pass
Where "10.0.1.1 999 user pass" would be a line in my txt file.
If that succeeds it spits out "SUCCESS!". This is where I would like to copy that line to a new file.
Now, to make it more complicated I would like to change the python script based on the start of the line. This isnt 100% needed but saves me spliiting the txt file before hand.
eg. If the line starts with "10" use script 1. If it starts with "192" use script 2. Both have the same "SUCCESS!" output.
I have tried this
cat list.txt | while read line
do
python tester.py $line
if $(...) == "S"*
then
$line >> good.txt
fi
done
Something isnt right though.
Hopefully that made enough sense for someone to be able to help me.
Chris
python linux bash
python linux bash
asked Nov 20 at 20:09
Chris
486
asked Nov 20 at 20:09
Chris
486
edited Nov 20 at 21:04
asked Nov 20 at 20:09
Chris
486
asked Nov 20 at 20:09
Chris
486
asked Nov 20 at 20:09
Chris
486
486
2
StackOverflow is not a free coding service. SO expects you to try to solve your own problem first. Please update your question to show what you have already tried in a Minimal, Complete, and Verifiable example. For further information, please see How to Ask, and take the tour :)
– Barmar
Nov 20 at 20:11
Use awhile readloop to read the file line by line into variables. You can test the first variable to decide which python script to run. Then run the script, passing the variables as arguments. Use$(...)to capture the output, and anifstatement to test if it'sSUCCESS!and then write to the file.
– Barmar
Nov 20 at 20:13
Nothing there is anything more than basic shell scripting. What part of it is confusing you?
– Barmar
Nov 20 at 20:14
I am still a beginner. The little I know if from looking at examples. I have tried this "cat list.txt | while read line; do python tester.py "$line"; done" but nothing prints
– Chris
Nov 20 at 20:20
Don't put$linein quotes. The python script expects 4 separate arguments, that will combine the entire line as one argument.
– Barmar
Nov 20 at 20:22
|
show 2 more comments
2
StackOverflow is not a free coding service. SO expects you to try to solve your own problem first. Please update your question to show what you have already tried in a Minimal, Complete, and Verifiable example. For further information, please see How to Ask, and take the tour :)
– Barmar
Nov 20 at 20:11
Use awhile readloop to read the file line by line into variables. You can test the first variable to decide which python script to run. Then run the script, passing the variables as arguments. Use$(...)to capture the output, and anifstatement to test if it'sSUCCESS!and then write to the file.
– Barmar
Nov 20 at 20:13
Nothing there is anything more than basic shell scripting. What part of it is confusing you?
– Barmar
Nov 20 at 20:14
I am still a beginner. The little I know if from looking at examples. I have tried this "cat list.txt | while read line; do python tester.py "$line"; done" but nothing prints
– Chris
Nov 20 at 20:20
Don't put$linein quotes. The python script expects 4 separate arguments, that will combine the entire line as one argument.
– Barmar
Nov 20 at 20:22
2
2
StackOverflow is not a free coding service. SO expects you to try to solve your own problem first. Please update your question to show what you have already tried in a Minimal, Complete, and Verifiable example. For further information, please see How to Ask, and take the tour :)
– Barmar
Nov 20 at 20:11
StackOverflow is not a free coding service. SO expects you to try to solve your own problem first. Please update your question to show what you have already tried in a Minimal, Complete, and Verifiable example. For further information, please see How to Ask, and take the tour :)
– Barmar
Nov 20 at 20:11
Use a
while read loop to read the file line by line into variables. You can test the first variable to decide which python script to run. Then run the script, passing the variables as arguments. Use $(...) to capture the output, and an if statement to test if it's SUCCESS! and then write to the file.– Barmar
Nov 20 at 20:13
Use a
while read loop to read the file line by line into variables. You can test the first variable to decide which python script to run. Then run the script, passing the variables as arguments. Use $(...) to capture the output, and an if statement to test if it's SUCCESS! and then write to the file.– Barmar
Nov 20 at 20:13
Nothing there is anything more than basic shell scripting. What part of it is confusing you?
– Barmar
Nov 20 at 20:14
Nothing there is anything more than basic shell scripting. What part of it is confusing you?
– Barmar
Nov 20 at 20:14
I am still a beginner. The little I know if from looking at examples. I have tried this "cat list.txt | while read line; do python tester.py "$line"; done" but nothing prints
– Chris
Nov 20 at 20:20
I am still a beginner. The little I know if from looking at examples. I have tried this "cat list.txt | while read line; do python tester.py "$line"; done" but nothing prints
– Chris
Nov 20 at 20:20
Don't put
$line in quotes. The python script expects 4 separate arguments, that will combine the entire line as one argument.– Barmar
Nov 20 at 20:22
Don't put
$line in quotes. The python script expects 4 separate arguments, that will combine the entire line as one argument.– Barmar
Nov 20 at 20:22
|
show 2 more comments
2 Answers
2
active
oldest
votes
By quoting $line you're combining all the words in the line into a single argument, but the Python script need 4 separate arguments.
You should read the first field of the line into a variable of its own so you can test it to decide which script to run.
Then assign the output of the script to a variable, test that against SUCESS!, and write to the output file if it matches.
while read -r ip rest
do
case "$ip" in
10.*) script=tester.py ;;
192.*) script=tester2.py ;;
*) echo "IP $ip doesn't start with 10 or 192";
exit;;
esac
result=$(sudo python $script $ip $rest)
if [[ $result == SUCCESS* ]]
then
echo "$ip $rest"
fi
done < list.txt > good.txt
answered Nov 20 at 20:28
Barmar
418k34243344
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token$'inr'' 'est.sh: line 4:case "$ip" in"
– Chris
Nov 20 at 21:27
You have Windows CRLF newlines in your script. Usedos2unixto fix it.
– Barmar
Nov 20 at 21:30
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like thisif [[ $result == SUCCESS* ]]
– Chris
Nov 20 at 21:50
That should work.
– Barmar
Nov 20 at 21:52
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
|
show 8 more comments
Pass the arguments as distinct elements.
while read -a line
do python tester.py "${line[@]}"
done < list.txt > log.txt 2>&1
That will also read the file without starting a pointless cat, and log your output. Edit details as needed.
You could also use a case statement on ${line[0]} to determine which program to run.
answered Nov 20 at 20:30
Paul Hodges
2,7581321
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
By quoting $line you're combining all the words in the line into a single argument, but the Python script need 4 separate arguments.
You should read the first field of the line into a variable of its own so you can test it to decide which script to run.
Then assign the output of the script to a variable, test that against SUCESS!, and write to the output file if it matches.
while read -r ip rest
do
case "$ip" in
10.*) script=tester.py ;;
192.*) script=tester2.py ;;
*) echo "IP $ip doesn't start with 10 or 192";
exit;;
esac
result=$(sudo python $script $ip $rest)
if [[ $result == SUCCESS* ]]
then
echo "$ip $rest"
fi
done < list.txt > good.txt
answered Nov 20 at 20:28
Barmar
418k34243344
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token$'inr'' 'est.sh: line 4:case "$ip" in"
– Chris
Nov 20 at 21:27
You have Windows CRLF newlines in your script. Usedos2unixto fix it.
– Barmar
Nov 20 at 21:30
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like thisif [[ $result == SUCCESS* ]]
– Chris
Nov 20 at 21:50
That should work.
– Barmar
Nov 20 at 21:52
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
|
show 8 more comments
By quoting $line you're combining all the words in the line into a single argument, but the Python script need 4 separate arguments.
You should read the first field of the line into a variable of its own so you can test it to decide which script to run.
Then assign the output of the script to a variable, test that against SUCESS!, and write to the output file if it matches.
while read -r ip rest
do
case "$ip" in
10.*) script=tester.py ;;
192.*) script=tester2.py ;;
*) echo "IP $ip doesn't start with 10 or 192";
exit;;
esac
result=$(sudo python $script $ip $rest)
if [[ $result == SUCCESS* ]]
then
echo "$ip $rest"
fi
done < list.txt > good.txt
answered Nov 20 at 20:28
Barmar
418k34243344
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token$'inr'' 'est.sh: line 4:case "$ip" in"
– Chris
Nov 20 at 21:27
You have Windows CRLF newlines in your script. Usedos2unixto fix it.
– Barmar
Nov 20 at 21:30
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like thisif [[ $result == SUCCESS* ]]
– Chris
Nov 20 at 21:50
That should work.
– Barmar
Nov 20 at 21:52
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
|
show 8 more comments
By quoting $line you're combining all the words in the line into a single argument, but the Python script need 4 separate arguments.
You should read the first field of the line into a variable of its own so you can test it to decide which script to run.
Then assign the output of the script to a variable, test that against SUCESS!, and write to the output file if it matches.
while read -r ip rest
do
case "$ip" in
10.*) script=tester.py ;;
192.*) script=tester2.py ;;
*) echo "IP $ip doesn't start with 10 or 192";
exit;;
esac
result=$(sudo python $script $ip $rest)
if [[ $result == SUCCESS* ]]
then
echo "$ip $rest"
fi
done < list.txt > good.txt
answered Nov 20 at 20:28
Barmar
418k34243344
By quoting $line you're combining all the words in the line into a single argument, but the Python script need 4 separate arguments.
You should read the first field of the line into a variable of its own so you can test it to decide which script to run.
Then assign the output of the script to a variable, test that against SUCESS!, and write to the output file if it matches.
while read -r ip rest
do
case "$ip" in
10.*) script=tester.py ;;
192.*) script=tester2.py ;;
*) echo "IP $ip doesn't start with 10 or 192";
exit;;
esac
result=$(sudo python $script $ip $rest)
if [[ $result == SUCCESS* ]]
then
echo "$ip $rest"
fi
done < list.txt > good.txt
answered Nov 20 at 20:28
Barmar
418k34243344
edited Nov 20 at 22:23
answered Nov 20 at 20:28
Barmar
418k34243344
answered Nov 20 at 20:28
Barmar
418k34243344
answered Nov 20 at 20:28
Barmar
418k34243344
418k34243344
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token$'inr'' 'est.sh: line 4:case "$ip" in"
– Chris
Nov 20 at 21:27
You have Windows CRLF newlines in your script. Usedos2unixto fix it.
– Barmar
Nov 20 at 21:30
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like thisif [[ $result == SUCCESS* ]]
– Chris
Nov 20 at 21:50
That should work.
– Barmar
Nov 20 at 21:52
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
|
show 8 more comments
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token$'inr'' 'est.sh: line 4:case "$ip" in"
– Chris
Nov 20 at 21:27
You have Windows CRLF newlines in your script. Usedos2unixto fix it.
– Barmar
Nov 20 at 21:30
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like thisif [[ $result == SUCCESS* ]]
– Chris
Nov 20 at 21:50
That should work.
– Barmar
Nov 20 at 21:52
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token
$'inr'' 'est.sh: line 4: case "$ip" in"– Chris
Nov 20 at 21:27
Thanks I didnt spot this. When I try it I get "test.sh: line 4: syntax error near unexpected token
$'inr'' 'est.sh: line 4: case "$ip" in"– Chris
Nov 20 at 21:27
You have Windows CRLF newlines in your script. Use
dos2unix to fix it.– Barmar
Nov 20 at 21:30
You have Windows CRLF newlines in your script. Use
dos2unix to fix it.– Barmar
Nov 20 at 21:30
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like this
if [[ $result == SUCCESS* ]] – Chris
Nov 20 at 21:50
Thanks I cant beleieve I missed that. Changed it over in Notepad ++. I am only getting the errors printing in the output. The reply starts with "SUCCESS!" but there is some other crap after it. I figured adding a star would allow for that? Like this
if [[ $result == SUCCESS* ]] – Chris
Nov 20 at 21:50
That should work.
– Barmar
Nov 20 at 21:52
That should work.
– Barmar
Nov 20 at 21:52
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
I thought so. It might be worth mentioning that the python script isnt printing anything. It was printing with my first attempt (after you told me to loose the quotes) but not with what you gave me.
– Chris
Nov 20 at 21:58
|
show 8 more comments
Pass the arguments as distinct elements.
while read -a line
do python tester.py "${line[@]}"
done < list.txt > log.txt 2>&1
That will also read the file without starting a pointless cat, and log your output. Edit details as needed.
You could also use a case statement on ${line[0]} to determine which program to run.
answered Nov 20 at 20:30
Paul Hodges
2,7581321
add a comment |
Pass the arguments as distinct elements.
while read -a line
do python tester.py "${line[@]}"
done < list.txt > log.txt 2>&1
That will also read the file without starting a pointless cat, and log your output. Edit details as needed.
You could also use a case statement on ${line[0]} to determine which program to run.
answered Nov 20 at 20:30
Paul Hodges
2,7581321
add a comment |
Pass the arguments as distinct elements.
while read -a line
do python tester.py "${line[@]}"
done < list.txt > log.txt 2>&1
That will also read the file without starting a pointless cat, and log your output. Edit details as needed.
You could also use a case statement on ${line[0]} to determine which program to run.
answered Nov 20 at 20:30
Paul Hodges
2,7581321
Pass the arguments as distinct elements.
while read -a line
do python tester.py "${line[@]}"
done < list.txt > log.txt 2>&1
That will also read the file without starting a pointless cat, and log your output. Edit details as needed.
You could also use a case statement on ${line[0]} to determine which program to run.
answered Nov 20 at 20:30
Paul Hodges
2,7581321
answered Nov 20 at 20:30
Paul Hodges
2,7581321
answered Nov 20 at 20:30
Paul Hodges
2,7581321
answered Nov 20 at 20:30
Paul Hodges
2,7581321
2,7581321
add a comment |
add a comment |
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2
StackOverflow is not a free coding service. SO expects you to try to solve your own problem first. Please update your question to show what you have already tried in a Minimal, Complete, and Verifiable example. For further information, please see How to Ask, and take the tour :)
– Barmar
Nov 20 at 20:11
Use a
while readloop to read the file line by line into variables. You can test the first variable to decide which python script to run. Then run the script, passing the variables as arguments. Use$(...)to capture the output, and anifstatement to test if it'sSUCCESS!and then write to the file.– Barmar
Nov 20 at 20:13
Nothing there is anything more than basic shell scripting. What part of it is confusing you?
– Barmar
Nov 20 at 20:14
I am still a beginner. The little I know if from looking at examples. I have tried this "cat list.txt | while read line; do python tester.py "$line"; done" but nothing prints
– Chris
Nov 20 at 20:20
Don't put
$linein quotes. The python script expects 4 separate arguments, that will combine the entire line as one argument.– Barmar
Nov 20 at 20:22