mjhjmtu

I have a script which runs in sh shell, this script runs fine. But I've added one script written in ksh shell ( in the head of the script there is #!/bin/ksh) but every time i get the error

./monitor_FMn2.sh[19]: 104: not found

Which every time change the second line that hit the error
The 19th line is the line where i call the ksh script

if `wc -l < $LOGFILE` > 55;
 then
 logcycle $LOGFILE
fi

logcycle is the ksh script.
As i'm not an expert in scripting + the line that hit errors is always different, i guess is just a syntax error.

`wc -l < $LOGFILE` > 55

Runs the command whose name is the output of wc subject to split+glob (104 in your case) and redirects its output to a file called 55 in the current directory. As there's no command called 104 on your system, you get that error.

Presumably, you wanted to write:

if [ "$(($(wc -l < "$LOGFILE") +0))" -gt 55 ]; then...

That is run the [ aka test command (instead of 104) to test that the output of wc -l interpreted as an arithmetic expression (so [ doesn't complain about leading spaces if any) is greater than 55.

Or with ksh syntax:

if (($(wc -l < "$LOGFILE") +0 > 55)); then...

(the +0 to cover for the case where the wc -l < "$LOGFILE" command produces no output, like when the $LOGFILE cannot be opened for reading).

(you may also want to remove that empty 55 file created earlier by your script).