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Right method for removing a file

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Top Forums Shell Programming and Scripting Right method for removing a file
# 1  
Old 07-02-2013
Right method for removing a file
Code:
if [  -f /52/bip_log_1.txt ]
then
  `rm /52/bip_log_1.txt`
  echo "file bip_eg.txt removed"
fi

I am using above code to remove a temorary log file

Code:
if [  -e /52/bip_log_1.txt ]
then
  `rm /52/bip_log_1.txt`
  echo "file bip_eg.txt removed"
fi

The file - e is showing error. WHY?
# 2  
Old 07-02-2013
Difference between -f and -e option:

[ -f FILE ] expression is true if file exists and is a regular file.

[ -e FILE ] expression is true if file exists.

By the way this backtick is not required:
Code:
`rm /52/bip_log_1.txt`

Quote:
Originally Posted by rafa_fed2
The file - e is showing error. WHY?
You didn't tell us what error you are getting?
# 3  
Old 07-02-2013
Quote:
Originally Posted by Yoda
Difference between -f and -e option:

[ -f FILE ] expression is true if file exists and is a regular file.

[ -e FILE ] expression is true if file exists.

By the way this backtick is not required:
Code:
`rm /52/bip_log_1.txt`

You didn't tell us what error you are getting?


Hi yoda,,
i am getting aruments needed error..
backtick is working fine.so no issues in that i guess.i think backtick is optional
# 4  
Old 07-02-2013
Quote:
Originally Posted by rafa_fed2
i am getting aruments needed error..
What system are you on and what shell are you using?
Code:
uname -a 
echo $SHELL

# 5  
Old 07-02-2013
Quote:
Originally Posted by Yoda
What system are you on and what shell are you using?
Code:
uname -a 
echo $SHELL

Code:
SunOS abcde 5.10 Generic_120011-14 sun4u sparc SUNW,Sun-Fire-480R

/usr/bin/ksh

---------- Post updated at 07:20 PM ---------- Previous update was at 07:18 PM ----------

Quote:
Originally Posted by rafa_fed2
Code:
SunOS abcde 5.10 Generic_120011-14 sun4u sparc SUNW,Sun-Fire-480R

/usr/bin/ksh

Is my method for checking and removing the file correct.I want to know that
# 6  
Old 07-02-2013
Quote:
Originally Posted by rafa_fed2
Is my method for checking and removing the file correct.I want to know that
Your method is correct and it should work.
Code:
#!/usr/bin/ksh

if [ -e /home/yoda/file ]
then
        print "File Exists"
        print "Removing file"
        rm -f /home/yoda/file
fi

Code:
$ ./script.ksh
File Exists
Removing file

Code:
$ uname -a
SunOS xxxxx 5.10 Generic_147440-22 sun4v sparc sun4v

This User Gave Thanks to Yoda For This Post:
rafa_fed2
# 7  
Old 07-02-2013
Quote:
Originally Posted by Yoda
Your method is correct and it should work.
Code:
#!/usr/bin/ksh

if [ -e /home/yoda/file ]
then
        print "File Exists"
        print "Removing file"
        rm -f /home/yoda/file
fi

Code:
$ ./script.ksh
File Exists
Removing file

Code:
$ uname -a
SunOS xxxxx 5.10 Generic_147440-22 sun4v sparc sun4v


-f is working and i am using it.Is this correct?
when i use -e it does not work
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