This my code
if [[ (grep -x $idle | grep -x $dead | grep -x $busy) || grep -x $idle1 | grep -x $dead | grep -x $busy1 ]] ./Event.log
then
echo "Events are running Successfully" >> ./Event.log
else
echo "One or more Events are down. Check the log and restart the Events." >> ./Event.log
fi
I'm getting the error
0403-057 Syntax error at line 14 : `-x' is not expected.
What's up?
In bash, [[ is syntactically a command which is terminated with the matching ]]. It is not part of the syntax of the if command, whose syntax starts:
if commands ; then
If you want to test whether a command succeeded or not, you just do that:
if grep -q pattern file; then
# grep found pattern in file
else
# grep did not find pattern in file
fi
Within a [[ command, bash expects to find a conditional expression, not another command. That's why grep -x ... is a syntax error. -x is a unary operator in a conditional expression, which is true if its argument is the name of an executable file, but in that expression it is being used as though it were a binary operator.
If you wish to test for more than one pattern with grep, you can use the -e option to specify each option; the grep will succeed (or select) lines matching any of the options:
if grep -q -e pattern1 -e pattern2 file; then
# grep found pattern1 or pattern2 in file
else
# grep did not find either pattern in file
fi
By a long shot, I am guessing that you want Event.log to contain one each of either member of the pairs. This could be done with something like
if awk "/^($idle|$idle1)$/ { ++idle; next }
/^($dead|$dead1)$/ { ++dead; next }
/^($busy|$busy1)$/ { ++busy; next }
idle && dead && busy { exit 0 }
END { exit 1 }' Event.log; then
echo Yes
else
echo no
fi
This collects three variables; if all of them are true, the Awk script exits with a success exit code (that's zero); otherwise, it will return failure (any nonzero value).
It would make more sense to print the result from Awk, too, but there is an awful amount of assumptions and guesswork in this answer already.
grep -x $idleis going to be reading from./Event.log? What do you wantgrep -x $idle1to read from?$idleand$deadcontain exacty the same string,grep -x $idle | grep -x $deadwill never return a match.-x, the entire input line must match. The output from the code mentions different "events" (in a way which suggests they are actually services or similar) so it seems highly unlikely that you need three different regexes to find one of them.