Getting error code of the first command in pipe in ash
Clash Royale CLAN TAG#URR8PPP
up vote
1
down vote
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I use wget to download a big file to two FIFOs like that:
wget <wget-args> -O - | tee -a "$fifo1" >> "$fifo2"
I want to retrieve the error code of wget on failure.
set -o pipefail returns error code of the rightmost command in a pipe so I can't be sure that the error code comes from wget.
So how can I do it in ash?
pipe error-handling ash
asked Jul 12 at 11:13
K. Koovalsky
103
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up vote
1
down vote
favorite
I use wget to download a big file to two FIFOs like that:
wget <wget-args> -O - | tee -a "$fifo1" >> "$fifo2"
I want to retrieve the error code of wget on failure.
set -o pipefail returns error code of the rightmost command in a pipe so I can't be sure that the error code comes from wget.
So how can I do it in ash?
pipe error-handling ash
asked Jul 12 at 11:13
K. Koovalsky
103
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I use wget to download a big file to two FIFOs like that:
wget <wget-args> -O - | tee -a "$fifo1" >> "$fifo2"
I want to retrieve the error code of wget on failure.
set -o pipefail returns error code of the rightmost command in a pipe so I can't be sure that the error code comes from wget.
So how can I do it in ash?
pipe error-handling ash
asked Jul 12 at 11:13
K. Koovalsky
103
I use wget to download a big file to two FIFOs like that:
wget <wget-args> -O - | tee -a "$fifo1" >> "$fifo2"
I want to retrieve the error code of wget on failure.
set -o pipefail returns error code of the rightmost command in a pipe so I can't be sure that the error code comes from wget.
So how can I do it in ash?
pipe error-handling ash
asked Jul 12 at 11:13
K. Koovalsky
103
asked Jul 12 at 11:13
K. Koovalsky
103
asked Jul 12 at 11:13
K. Koovalsky
103
asked Jul 12 at 11:13
K. Koovalsky
103
103
add a comment |Â
add a comment |Â
1 Answer
1
active
oldest
votes
up vote
0
down vote
accepted
Just redirect return code of wget to a file , here $? contains the return code
$ (wget <wget-args> -O - ; echo $? > result) | tee -a "$fifo1" >> "$fifo2"
Here the file result will contain the status code of your operation
$ cat result
0
answered Jul 12 at 12:43
Arushix
9968
Why is the stdout fromwgetpassed further toteeand call toechois kind'a transparent?
– K. Koovalsky
Jul 12 at 12:57
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
This won't work. The pipe is not getting any input, the;ends the first command.
– terdon♦
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output ofwgetis piped totee.( wget ...; echo ... >result ) | tee ...
– Kusalananda
Jul 12 at 13:43
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
add a comment |Â
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
0
down vote
accepted
Just redirect return code of wget to a file , here $? contains the return code
$ (wget <wget-args> -O - ; echo $? > result) | tee -a "$fifo1" >> "$fifo2"
Here the file result will contain the status code of your operation
$ cat result
0
answered Jul 12 at 12:43
Arushix
9968
Why is the stdout fromwgetpassed further toteeand call toechois kind'a transparent?
– K. Koovalsky
Jul 12 at 12:57
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
This won't work. The pipe is not getting any input, the;ends the first command.
– terdon♦
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output ofwgetis piped totee.( wget ...; echo ... >result ) | tee ...
– Kusalananda
Jul 12 at 13:43
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
add a comment |Â
up vote
0
down vote
accepted
Just redirect return code of wget to a file , here $? contains the return code
$ (wget <wget-args> -O - ; echo $? > result) | tee -a "$fifo1" >> "$fifo2"
Here the file result will contain the status code of your operation
$ cat result
0
answered Jul 12 at 12:43
Arushix
9968
Why is the stdout fromwgetpassed further toteeand call toechois kind'a transparent?
– K. Koovalsky
Jul 12 at 12:57
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
This won't work. The pipe is not getting any input, the;ends the first command.
– terdon♦
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output ofwgetis piped totee.( wget ...; echo ... >result ) | tee ...
– Kusalananda
Jul 12 at 13:43
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
add a comment |Â
up vote
0
down vote
accepted
up vote
0
down vote
accepted
Just redirect return code of wget to a file , here $? contains the return code
$ (wget <wget-args> -O - ; echo $? > result) | tee -a "$fifo1" >> "$fifo2"
Here the file result will contain the status code of your operation
$ cat result
0
answered Jul 12 at 12:43
Arushix
9968
Just redirect return code of wget to a file , here $? contains the return code
$ (wget <wget-args> -O - ; echo $? > result) | tee -a "$fifo1" >> "$fifo2"
Here the file result will contain the status code of your operation
$ cat result
0
answered Jul 12 at 12:43
Arushix
9968
edited Jul 13 at 6:45
answered Jul 12 at 12:43
Arushix
9968
answered Jul 12 at 12:43
Arushix
9968
answered Jul 12 at 12:43
Arushix
9968
9968
Why is the stdout fromwgetpassed further toteeand call toechois kind'a transparent?
– K. Koovalsky
Jul 12 at 12:57
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
This won't work. The pipe is not getting any input, the;ends the first command.
– terdon♦
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output ofwgetis piped totee.( wget ...; echo ... >result ) | tee ...
– Kusalananda
Jul 12 at 13:43
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
add a comment |Â
Why is the stdout fromwgetpassed further toteeand call toechois kind'a transparent?
– K. Koovalsky
Jul 12 at 12:57
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
This won't work. The pipe is not getting any input, the;ends the first command.
– terdon♦
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output ofwgetis piped totee.( wget ...; echo ... >result ) | tee ...
– Kusalananda
Jul 12 at 13:43
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
Why is the stdout from
wget passed further to tee and call to echo is kind'a transparent?– K. Koovalsky
Jul 12 at 12:57
Why is the stdout from
wget passed further to tee and call to echo is kind'a transparent?– K. Koovalsky
Jul 12 at 12:57
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
I just replicated what you did, and tried giving you the return code of the first command
– Arushix
Jul 12 at 13:03
This won't work. The pipe is not getting any input, the
; ends the first command.– terdon♦
Jul 12 at 13:43
This won't work. The pipe is not getting any input, the
; ends the first command.– terdon♦
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output of
wget is piped to tee. ( wget ...; echo ... >result ) | tee ...– Kusalananda
Jul 12 at 13:43
That first part of the pipeline must run in a subshell so that the output of
wget is piped to tee. ( wget ...; echo ... >result ) | tee ...– Kusalananda
Jul 12 at 13:43
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
@Kusalananda please, post an answer and I'll accept it.
– K. Koovalsky
Jul 13 at 6:42
add a comment |Â
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