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How can I have one script with 2 different names?

 
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# 8  
Old 05-15-2010
Maybe you're thinking about the ln command is a little skewed?

Soft or Symbolic links DO NOT create a second file. The ln utility creates a secondary reference to a given file...with a system-wide permanance that aliases do not have; extremely useful since many of the basic utils in the system are oftentimes actually links...not direct references. I also use them to overload a given script so that it behaves differently according to its $0 name.

Code:
$ ln -s file.csv file.lnk
$ ls -ltr file.*
-rw-rw-r--  1 curleb   sys       554352 May 11 15:57 file.cpy
-rw-rw-r--  1 curleb   sys        76392 May 11 16:07 file.csv
lrwxrwxrwx  1 curleb   sys            8 May 15 18:12 file.lnk -> file.csv

Notice that the soft-link created is not actually a second file, but just a systemic shortcut. Does this help any?
# 9  
Old 05-15-2010
Further to curleb, a common example of hard links is "ls" itself.

In this example /usr filesystem inode 1244 has 7 different names (hence the link count of 7) but there is only one program. The program behaves differently according to how it is called.

Code:
ls -lisad /usr/bin/ls
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/ls

find /usr/ -xdev -inum 1244 -exec ls -lisad {} \;
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/l
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/lc
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/ll
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/ls
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/lsf
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/lsr
  1244   64 -r-xr-xr-x   7 bin        bin          28672 Nov 14  2000 /usr/bin/lsx

# 10  
Old 05-15-2010
and even 90 hardlinks to a single executable on Solaris (isaexec based binaries)
Code:
$ uname -a
SunOS m10 5.11 snv_134 i86pc i386 i86pc
$ find /usr/bin -inum $(ls -i /usr/bin/uptime|nawk '{print $1}') | wc -l
90

# 11  
Old 05-19-2010
curleb ,
Very useful!
Thank you so much!
Got it!
Thank you so much!
Last edited by lemon_06; 05-20-2010 at 12:12 AM..
# 12  
Old 05-19-2010
Code:
ln -s script_a script_b

# 13  
Old 05-26-2010
i have the same situation
where one script : two different names : two diffferent outcome? ( first is to email to myself -done this part ) second is to display onto the terminal

thanks
 
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