使用脚本外壳（Linux批处理）和重定向在日志文件中进行交融

Question

Please help!!! ;)
I have a problem with this code in a batch file (Linux):

---

Mil=`date +"%Y%m%d%H%M%S"`  
batch=`echo "${DatMusic}"`  
TabimportEnteteMusic="importentetemusic.dat"  
{  
    grep '^ENTETE' ${IMPORT}/${DatMusic} > ${IMPORT}/$TabimportEnteteMusic  
    mysql -u basemine --password="basemine" -D basemine -e "delete from importmusic;"  
    mysql -u basemine --password="basemine" -D basemine -e "delete from importentetemusic;"  
} >> $TRACES/batch/$Mil.$batch.log 2>&1 

---

When I run this batch, its answer is:

---

/home/mmoine/sgbd_mysql/batch/importMusic.sh: line 51: /batch/20100319160018.afce01aa.cr.log: Aucun fichier ou répertoire de ce type  

______ (in english, I suppose: "No files or Directory found")

So, please, how can I put all generated messages in this log file?

Thanks for your answers.
Sorry for my english ;)

Answer 1

you should define your TRACES variable. Also, use $() instead of backticks whenever possible.

TRACES="something here"
Mil=$(date +"%Y%m%d%H%M%S")
batch="${DatMusic}"
TabimportEnteteMusic="importentetemusic.dat"
{
    grep '^ENTETE' "${IMPORT}/${DatMusic}" > "${IMPORT}/$TabimportEnteteMusic"
    mysql -u basemine --password="basemine" -D basemine -e "delete from importmusic;"
    mysql -u basemine --password="basemine" -D basemine -e "delete from importentetemusic;"
} >> $TRACES/batch/${Mil}.${batch}.log 2>&1

Answer 2

The error message speaks about the /batch/20100319160018.afce01aa.cr.log file.

This means that $TRACES/batch/${Mil}.${batch}.log is replaced by /batch/20100319160018.afce01aa.cr.log

This means that the $TRACES variable can't be defined at the place you are using it (event if you repeat one hundred times "$TRACE is an environment variable and is defined").

Try a

echo "\$TRACES $TRACES"

Answer 3

$TRACES/batch/$Mil.$batch.log is becoming /batch/20100319160018.afce01aa.cr.log so I guess $TRACES isn't defined.

I guess the /batch directory doesn't exist.