unix shell scripting


 
Thread Tools Search this Thread
Top Forums Shell Programming and Scripting unix shell scripting
# 1  
Old 05-11-2009
unix shell scripting

i have a file blah_blah_blah_yyyymmdd.dat . I need to write a shell script to extract this date and compare it with the current date. How do i do this?? Can someone provide me with the code please?
# 2  
Old 05-11-2009
an example,
Code:
date "+%Y"

this get the current year, check the man page of date to see how to get the month and day.
as for parsing the file ,if you have bash, one way
Code:
filename=blah_blah_blah_yyyymmdd.dat
filename=${filename##*_}
filename= ${filename%*.dat}

then use if/else and equality operator to check whether they are same
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

UNIX Shell Scripting

Describe in short the word completion feature of the tcsh Completion works anywhere in the command line, not at just the end, for both commands and filenames. Type part of a word and hit the Tab key, and the shell replaces the incomplete word with the complete one in the input buffer. The... (1 Reply)
Discussion started by: Elena Lauren
1 Replies

2. Programming

unix Shell scripting

Hi All, need help to complete the automation but stuck at a perticular situation below is the code <code> fixed_function_name { code.... code.... variable_map= { a="/a" b="/b" c="/c" so on... } (7 Replies)
Discussion started by: yadavricky
7 Replies

3. Shell Programming and Scripting

UNIX shell scripting

I am new to Unix.. Can someone please help me to understand the concept of Login shell and non login shell ? what exactly the difference between them :confused: (1 Reply)
Discussion started by: lokita jain
1 Replies

4. UNIX for Dummies Questions & Answers

Unix Shell Scripting

I'm sorry if this doesn't go here, but I'm in depserate need of help with my last unix homework. Anyways, I'm taking summer classes, and one of them is UNIX. I've understood everything thus far, but I'm having a killer time with how my instructor has worded the problems for shell scripting. I... (3 Replies)
Discussion started by: dw15
3 Replies

5. UNIX for Dummies Questions & Answers

Unix Shell Scripting( Calling from Unix to PLSQL)

Hello Experts, I have the following questions to be discussed here at this esteemed discussion forum. I have two Excel sheets which contain Unix Commands llike creating directory the structure/ftp/Copy/Zip etc to basically create an environment. I need help in understanding some of... (1 Reply)
Discussion started by: faizsaadq
1 Replies

6. Shell Programming and Scripting

Unix Shell Scripting

I 'm new to unix shell scripting can some one guide me to any e-book or link from where i can learn unix shell scripting .. i want to learn create interactive scripts for my day to day solaris work. Any help would be appreciated (1 Reply)
Discussion started by: fugitive
1 Replies

7. UNIX for Advanced & Expert Users

Need your Help on Unix Shell Scripting.........

Hi Friends, 1. Bash Shell Scrpt to take backup at evening 2. I need a bash shell script for killing all processes. (5 Replies)
Discussion started by: vinayraj
5 Replies

8. Shell Programming and Scripting

Unix Shell Scripting

Hi All, Greetings!! I am trying to write a script that will get me the syslog.log file output of last week... That is ...my cron will run on Monday and will get me the syslog output of previous week , last monday-last sunday. I tried using date formatting and tail..but did not succeed.... (4 Replies)
Discussion started by: premamadhuri
4 Replies

9. Shell Programming and Scripting

Unix shell scripting

Hi, we are writing this fields dynamically retrieved from database and writing into the file. $bmpRec = $bmpRec.'|'.$cust_id; # sp4 $bmpRec = $bmpRec.'|'.$serv_id; # sp5 $bmpRec = $bmpRec.'|'.$site_id; # sp6 $bmpRec = $bmpRec.'|'.$loc_id; # sp7 ... (4 Replies)
Discussion started by: Maruthi Kunnuru
4 Replies

10. Shell Programming and Scripting

difference between AIX shell scripting and Unix shell scripting.

please give the difference between AIX shell scripting and Unix shell scripting. (2 Replies)
Discussion started by: haroonec
2 Replies
Login or Register to Ask a Question