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How do display error messages instantly when command fails?
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Answer / rallapalli
HE did not ask how to redirect error of a command. He said
clearly. How do you display error message instantly when
command fails.
ans:
By default it will display no need to do any thing. when u
type wrong command the error will display on screen.
Ex:
#usradd tom
ERR: command not found
ok?
| Is This Answer Correct ? | 7 Yes | 0 No |
Suppose you are trying to cat a non existing file:
cat /etc/shado 2>/dev/null || echo “Failed to open file”
command 2 "echo" is executed only if command 1 "cat" returns
a non-zero exit status
# cat /etc/shado 2>/dev/null || echo "Failed to open file"
Failed to open file
#
| Is This Answer Correct ? | 6 Yes | 2 No |
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