File name


 
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# 1  
Old 10-17-2010
File name

Hi,

I have file names with month.txt extension. Like say - abcJan.txt edfFeb.txt.

What I need to do is: I need to read today's month and then check if I have file available for previous two months extension. Say for example today is Oct so I need to check whether I have files with Aug.txt and Sep.txt extension and according execute another script.

Can anybody please guide me how to accomplish this?
# 2  
Old 10-17-2010
Code:
a=`date +%m`
b=`expr $a - 1`
c=`expr $a - 2`
d=`cal $b 2010|head -1`
e=`cal $c 2010|head -1`
f=`echo $d|cut -c1-3`
g=`echo $e|cut -c1-3`


Last edited by Don Cragun; 08-12-2015 at 06:09 PM.. Reason: Add CODE tags.
# 3  
Old 10-17-2010
If you have GNUdate.

Code:
$ date -d "-1 month" +%h
Sep
$ date -d "-2 month" +%h
Aug

# 4  
Old 10-18-2010
Code:
$ ruby -rdate -e 'BEGIN{m=(Date.today.month.to_i)-2; Dir["*"].each{|x| puts x if File.mtime(x).strftime("%m").to_i==m} }'

# 5  
Old 10-18-2010
Hi KRB,

Could you please explain functionality of following commands:

Code:
d=`cal $b 2010|head -1`
e=`cal $c 2010|head -1`
f=`echo $d|cut -c1-3`
g=`echo $e|cut -c1-3`

I am sorry but I am new to Unix and just learning up the things.

Last edited by Don Cragun; 08-12-2015 at 06:09 PM.. Reason: Add CODE tags.
# 6  
Old 10-18-2010
Code:
d=`cal $b 2010|head -1` # prints the calander for the year 2010 for $b(which is the month previous to the current month) | from the previous output it prints the first line(eg: "September 2010")
e=`cal $c 2010|head -1` # same as above but for the second previous month
f=`echo $d|cut -c1-3`  # from the above output("September 2010"), cuts and prints just the short form of the month, eg "Sep"
g=`echo $e|cut -c1-3`  # same as above.

Now you incorporate the commands given by KRB into a script to get what you want
# 7  
Old 10-18-2010
Thanks Raghu,

Now how do I check the file name like abcJan.txt that it has Jan or Sep?
 
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