Can somebody help me with this... I can't seem to get a working while statement (it never enters the loop)... Tried many different syntaxes and I'm stuck.
tries=0
success=false
while (!${success} && ${tries} -lt 10); do
{
echo "Trying..." &&
myCommand &&
success=true &&
echo "Success"
} || {
success=false &&
echo "Failed"
}
let tries=tries+1
done
Just a little change
tries=0
success=false
while (( !${success} && ${tries} < 10 )); do
{
echo "Trying..." &&
myCommand &&
success=true &&
echo "Success"
} || {
success=false &&
echo "Failed"
}
let tries=tries+1
done
Difference in Bash between IF statements with parenthesis and square brackets
success=0 and while (( ${success} < 1 && ${tries} < 10 )); do ... shoud workYou appear to be trying to write C code in bash. Specifically, your use of success as both a Boolean flag and an executable program is a bit awkward. Try
while (( tries < 10 )); do
{ myCommand && echo Success && break; } || { echo Failed && let tries=tries+1; }
done
Using an explicit if statement would also be more readable:
while (( tries < 10 )); do
if myCommand; then
echo Success
break
else
echo Failed
let tries=tries+1
fi
done
