How to catch stderr of piped command in bash

Asked Jun 13 '16 at 08:30

Active Jun 13 '16 at 08:30

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How do I catch error of that command into a var or following if-statement (nb $? always gets set 0):

mysqldump $db | gzip -9 > /opt/backup/dbdumps/$db-$stamp.sql.gz

Default redirect 2> $foo fails with ambiguous redirect error. I guess because bash does not know which command's stderr to redirect? But where to put some brackets or that stuff?

asked Jun 13 '16 at 08:30

toshniba

1

use `mysqldump $db 2>&1 | gzip -9...` or `mysqldump $db |& gzip -9`... – anishsane Jun 13 '16 at 08:36
Also check for a variable called `PIPESTATUS`... – anishsane Jun 13 '16 at 08:38
Look at [this answer](http://stackoverflow.com/questions/637827/redirect-stderr-and-stdout-in-a-bash-script?rq=1) – Flows Jun 13 '16 at 09:36

How to catch stderr of piped command in bash

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