Bash Script: Redirecting to file gives "Illegal Instruction"
The $EXECUTE >> $REDIRECT statement is not on line 6 in the script. So the error is not in the script but rather in the executable.
...: line 6: 11927 Illegal instruction: 4 $EXECUTABLE >> $OUTFILE
This is also easy to see because or the error text. "Illegal instruction" means that the CPU can not execute some command. It is theoretically possible, but bash is stable software and these error do not occur in mature software.
The text you replaced with an ellipsis usually contains the executable which died or threw an error. I bet 50 rep it wasn't "bash".
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Patrick
A Swiss-made software engineer who likes to play with as many technologies as possible. I'm fluent in Java, dabbled in C#, develop for Android in my spare time. In my job I develop software for businesses, mainly with Eclipse Scout and Java. Also I configure, engineer and maintain our build setup and continuous integration systems, deploy and support our software. #SOreadytohelp
Updated on September 18, 2022Comments
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Patrick over 1 year
I'm trying to use a bash script for a study assignment. As a bash noob, I tried to adapt an existing one to suit my purpose: Compile/Make a C-program with different compile arguments, execute it and redirect its output to a file.
The script is as follows:
#!/bin/bash EXECUTABLE=./PartitionedHashJoin OUTFILE=results.txt for sizelog2 in $(seq 0 20) do for buckets in $(seq 2 2048) do size=$((1<<$sizelog2)) make clean make PartitionedHashJoin NUM_RELATION_R=$sizelog2 NUM_BUCKETS=$buckets echo -n $sizelog2 " " $buckets " " >> $OUTFILE $EXECUTABLE >> $OUTFILE done done
However, bash throws an error:
...: line 6: 11927 Illegal instruction: 4 $EXECUTABLE >> $OUTFILE
If I remove the redirecting of the executable's output, then it works.
I do not get what I could have typed wrong in the redirection - it works just fine in another example with just one loop. Google didn't have a suggestion so far for what I'm doing wrong.
Can anyone spot it?
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ott-- over 12 yearsWhat does "file ./PartitionedHashJoin" report? Is that file executable? Try "test -x $EXECUTABLE && $EXECUTABLE >> $OUTFILE".
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Keith Thompson over 12 yearsIt's very unlikely that bash itself threw this error. It's far more likely your
PartitionedHashJoin
executable is blowing up. -
Patrick over 12 yearsAah, you are correct. facepalm The error seems to lie in the executable indeed. Seems to be a weird one though - but at least it's not the bash. Thanks!
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