Is it possible for sendmail to not use all the output from a bash subshell piped to it?In what order do piped...
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Is it possible for sendmail to not use all the output from a bash subshell piped to it?
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( GNU bash, version 4.2.50(1)-release (powerpc-ibm-aix6.1.2.0))
(
echo "a"
echo "b"
echo "c"
)| sendmail -F "Sender" recipients@a.com
This runs inside a .sh file, and the log (when ran with the -x option) show the sendmail before echo "c".
I am trying to debug why sendmail fails sporadically. Since the subshell and sendmail run in parallel, is it possible for sendmail to not wait for the whole subshell to be over, and use only the partial output until echo b and proceed to send an incomplete email and then fail? (There are no error messages in stderr though, the email just doesn't show up in my inbox mysteriously for some executions)
For more context:
The echo commands I wrote above are just placeholders, I am actually trying to prepare an email as in this answer https://stackoverflow.com/a/3335377/11521011 and pipe it to sendmail
bash sendmail subshell
asked 2 days ago
dbzadbza
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
( GNU bash, version 4.2.50(1)-release (powerpc-ibm-aix6.1.2.0))
(
echo "a"
echo "b"
echo "c"
)| sendmail -F "Sender" recipients@a.com
This runs inside a .sh file, and the log (when ran with the -x option) show the sendmail before echo "c".
I am trying to debug why sendmail fails sporadically. Since the subshell and sendmail run in parallel, is it possible for sendmail to not wait for the whole subshell to be over, and use only the partial output until echo b and proceed to send an incomplete email and then fail? (There are no error messages in stderr though, the email just doesn't show up in my inbox mysteriously for some executions)
For more context:
The echo commands I wrote above are just placeholders, I am actually trying to prepare an email as in this answer https://stackoverflow.com/a/3335377/11521011 and pipe it to sendmail
bash sendmail subshell
asked 2 days ago
dbzadbza
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
I'm guessing you're actual issue doesn't involve simply echoing a,b,c? There may be something else going on. Also what logs?
– Jesse_b
2 days ago
Also see In what order do piped commands run?
– steeldriver
2 days ago
@Jesse_b Thanks, I rephrased and added more context
– dbza
18 hours ago
add a comment |
( GNU bash, version 4.2.50(1)-release (powerpc-ibm-aix6.1.2.0))
(
echo "a"
echo "b"
echo "c"
)| sendmail -F "Sender" recipients@a.com
This runs inside a .sh file, and the log (when ran with the -x option) show the sendmail before echo "c".
I am trying to debug why sendmail fails sporadically. Since the subshell and sendmail run in parallel, is it possible for sendmail to not wait for the whole subshell to be over, and use only the partial output until echo b and proceed to send an incomplete email and then fail? (There are no error messages in stderr though, the email just doesn't show up in my inbox mysteriously for some executions)
For more context:
The echo commands I wrote above are just placeholders, I am actually trying to prepare an email as in this answer https://stackoverflow.com/a/3335377/11521011 and pipe it to sendmail
bash sendmail subshell
asked 2 days ago
dbzadbza
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
( GNU bash, version 4.2.50(1)-release (powerpc-ibm-aix6.1.2.0))
(
echo "a"
echo "b"
echo "c"
)| sendmail -F "Sender" recipients@a.com
This runs inside a .sh file, and the log (when ran with the -x option) show the sendmail before echo "c".
I am trying to debug why sendmail fails sporadically. Since the subshell and sendmail run in parallel, is it possible for sendmail to not wait for the whole subshell to be over, and use only the partial output until echo b and proceed to send an incomplete email and then fail? (There are no error messages in stderr though, the email just doesn't show up in my inbox mysteriously for some executions)
For more context:
The echo commands I wrote above are just placeholders, I am actually trying to prepare an email as in this answer https://stackoverflow.com/a/3335377/11521011 and pipe it to sendmail
bash sendmail subshell
bash sendmail subshell
asked 2 days ago
dbzadbza
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 days ago
dbzadbza
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 16 hours ago
dbza
asked 2 days ago
dbzadbza
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 2 days ago
dbzadbza
11
asked 2 days ago
dbzadbza
11
11
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
dbza is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
2
I'm guessing you're actual issue doesn't involve simply echoing a,b,c? There may be something else going on. Also what logs?
– Jesse_b
2 days ago
Also see In what order do piped commands run?
– steeldriver
2 days ago
@Jesse_b Thanks, I rephrased and added more context
– dbza
18 hours ago
add a comment |
2
I'm guessing you're actual issue doesn't involve simply echoing a,b,c? There may be something else going on. Also what logs?
– Jesse_b
2 days ago
Also see In what order do piped commands run?
– steeldriver
2 days ago
@Jesse_b Thanks, I rephrased and added more context
– dbza
18 hours ago
2
2
I'm guessing you're actual issue doesn't involve simply echoing a,b,c? There may be something else going on. Also what logs?
– Jesse_b
2 days ago
I'm guessing you're actual issue doesn't involve simply echoing a,b,c? There may be something else going on. Also what logs?
– Jesse_b
2 days ago
Also see In what order do piped commands run?
– steeldriver
2 days ago
Also see In what order do piped commands run?
– steeldriver
2 days ago
@Jesse_b Thanks, I rephrased and added more context
– dbza
18 hours ago
@Jesse_b Thanks, I rephrased and added more context
– dbza
18 hours ago
add a comment |
1 Answer
1
active
oldest
votes
You have not used -i in sendmail's command line options.
It makes sendmail treat "single dot only line" as end of message.
answered 8 mins ago
AnFiAnFi
1,113510
add a comment |
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You have not used -i in sendmail's command line options.
It makes sendmail treat "single dot only line" as end of message.
answered 8 mins ago
AnFiAnFi
1,113510
add a comment |
You have not used -i in sendmail's command line options.
It makes sendmail treat "single dot only line" as end of message.
answered 8 mins ago
AnFiAnFi
1,113510
add a comment |
You have not used -i in sendmail's command line options.
It makes sendmail treat "single dot only line" as end of message.
answered 8 mins ago
AnFiAnFi
1,113510
You have not used -i in sendmail's command line options.
It makes sendmail treat "single dot only line" as end of message.
answered 8 mins ago
AnFiAnFi
1,113510
answered 8 mins ago
AnFiAnFi
1,113510
answered 8 mins ago
AnFiAnFi
1,113510
answered 8 mins ago
AnFiAnFi
1,113510
1,113510
add a comment |
add a comment |
dbza is a new contributor. Be nice, and check out our Code of Conduct.
dbza is a new contributor. Be nice, and check out our Code of Conduct.
dbza is a new contributor. Be nice, and check out our Code of Conduct.
dbza is a new contributor. Be nice, and check out our Code of Conduct.
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2
I'm guessing you're actual issue doesn't involve simply echoing a,b,c? There may be something else going on. Also what logs?
– Jesse_b
2 days ago
Also see In what order do piped commands run?
– steeldriver
2 days ago
@Jesse_b Thanks, I rephrased and added more context
– dbza
18 hours ago