Return value of redirected bash command -

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• how check exit if used tee? 3 answers

the following script tries create directory , fails because temp1 doesn't exist. want redirect output "tee." problem "$?" catches return value of "tee" succeeds , not value of "mkdir" fails. how can use "tee" check return value of "mkdir"

file name: ./test.sh

#!/bin/bash  mkdir temp1/temp2 | tee test_output.txt if [ "$?" != 0 ];     echo "command failed" else     echo "command successed" fi 

./test.sh

mkdir: cannot create directory `temp1/temp2': no such file or directory

command successed

since stated bash, can use pipestatus. man page:

pipestatus
array variable (see arrays below) containing list of exit status values processes in most-recently-executed foreground pipeline (which may contain single command).

for example:

#!/bin/bash  mkdir temp1/temp2 | tee test_output.txt if [ "${pipestatus[0]}" != 0 ];     echo "command failed" else     echo "command succeeded" fi