tee -a : No such file or Directory

Question

Please have a look at following code.

#!/bin/sh
LOG_FILE=/home/admin/scriptLogs.log
rm -f ${LOG_FILE}
echo "`date`:: Script Execution Started" | tee -a ${LOG_FILE}
DATABASE ACCESS CODE 2>&1
echo "`date`:: Script Execution Successful " | tee -a {$LOG_FILE}
exit 0

It produces following output:

> Tue Feb  7 12:14:49 IST 2017:: Script Execution Started 
> tee:{/home/admin/scriptLogs.log}: No such file or directory 
> Tue Feb  7 12:14:49 IST 2017:: Script Execution Successfull

However, the file is present in the specified location. It also gets appended with data except for the last echo statement. Why such behavior?

Answer 1

Make sure to always quote your variables before expanding them to avoid reinterpretation (read about it here: http://www.tldp.org/LDP/abs/html/quotingvar.html ) Also, you should define LOG_FILE as a string (note the quotes below):

LOG_FILE="/home/admin/scriptLogs.log"

With that said, you have a typo in your script as mentioned by @codeforester

Also, you print that the execution was successful, without checking that it really was.

So you code should look like this:

    #!/bin/sh
    LOG_FILE="/home/admin/scriptLogs.log"
    rm -f "$LOG_FILE"
    echo "`date`:: Script Execution Started" | tee -a "$LOG_FILE"
    DATABASE ACCESS CODE 2>&1
    if [ $? -eq 0 ]; then
      echo "`date`:: Script Execution Successful " | tee -a "$LOG_FILE"
    else
      ...
    exit 0

Note: I have removed the curly brackets, as they are not needed here (although it is not a mistake to do so)

Answer 2

As pointed out by @codeforester, use:

#!/bin/sh
LOG_FILE=/home/admin/scriptLogs.log
rm -f ${LOG_FILE}
echo "`date`:: Script Execution Started" | tee -a ${LOG_FILE}
DATABASE ACCESS CODE 2>&1
echo "`date`:: Script Execution Successful " | tee -a ${LOG_FILE}
exit 0