Login or Register to Ask a Question and Join Our Community


UNIX for Dummies Questions & Answers

Checking the header and trailer for a given string and if not found, exit out of the

 
Thread Tools Search this Thread
Top Forums UNIX for Dummies Questions & Answers Checking the header and trailer for a given string and if not found, exit out of the
# 1  
Old 11-07-2007
Checking the header and trailer for a given string and if not found, exit out of the
hi,

How to check a given file for a string and if it's not found, exit out ofthe script?
e.g. a file Test123 is there whose header begins with #bt and trailer begins with #ed.
I have to check if the header and trailer matches as above and if not, exit out of the script.
How can we do it in Unix and perl.

Thanks in advance.
# 2  
Old 11-07-2007
Code:
#!/bin/ksh
# $1 = input file
found=0

head -n 1 $1 | grep -q '^#bt'  && tail -n 1 $1 | grep -q '^#ed' && found=1

if [[ found -eq 0 ]] ; then
  exit 1
fi
echo "okay"

tested with this file:
Quote:
#bt header
data
data
data
#ed trailer
# 3  
Old 11-08-2007
Thanks a lot....
 
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Header and trailer Check in UNIX

I am planning to automate multiple files through Unix script. Could you please guide for making the automation for multiple files ? Eg. I have to check header and footer for all files in the particular path and the header pattern should match with the filename. Filename- Filename.txt... (2 Replies)
Discussion started by: karthick2020333
2 Replies

2. Shell Programming and Scripting

Sort without Header and Trailer

Hi , My UNIX system is SUN Solaris. I am trying to do a simple thing as described below. I have a PIPE delimited file that has header and trailer. So the file is something like below: Test1.txt looks like something below: field_data1|field_data2|and some more data --Header ... (5 Replies)
Discussion started by: Saanvi1
5 Replies

3. UNIX for Dummies Questions & Answers

Execute shell script and if string found while executing then exit

Hi All, I have one shell script start.sh which executes another shell script test.sh something like below :test.sh -param1 -param2 In the test.sh there is one command for removing file:rm file1.bak I want whenever I execute start.sh, it will execute test.sh and if it finds string rm... (7 Replies)
Discussion started by: ORAI
7 Replies

4. Shell Programming and Scripting

Verify the header and trailer in file

please see my requirement, I hope I am clear. (9 Replies)
Discussion started by: mirwasim
9 Replies

5. Shell Programming and Scripting

Script to validate file header and trailer

Hi, I need a script that validates a file header/detail/trailer. File layout is: Header - Rec_Type|File_name|File_Date Detail - Rec_Type|field1|field2|field3... Trailder - Rec_Type|File_name|File_Date|Record_count Sample Data: HDR|customer_data.dat|20120709... (7 Replies)
Discussion started by: ash_sh
7 Replies

6. UNIX for Dummies Questions & Answers

oneliner for adding header and trailer

for example, i have a file with below content: 123413 866688 816866 818818 i want the output as: This is header 123413 866688 816866 818818 This is trailer i am able to achieve it using a bash script. (2 Replies)
Discussion started by: pandeesh
2 Replies

7. UNIX for Dummies Questions & Answers

Adding header and trailer into a file

Hi, I want to add the below Header to all the files in sequence File1,File2,File3...etc "ABC,<number of chracter in the file>" e,g - If File1 is as below pqrstuvdt abcdefgh then I want to add the above header into it ,So that File1 becomes as below ABC,17 pqrstuvdt abcdefgh ... (9 Replies)
Discussion started by: spari2
9 Replies

8. Shell Programming and Scripting

Header as is.. trailer count

i have .DAT file FILE1.DAT 1200910270040625 2123456789 J123456 ABC 2123456789 K123456 ABC 2222222222 L123456 DEF 2333333333 M12345 GHI 30000004 My outfile FILE2.TXT should have like this, I need the header value as ie (1200910270040625 ) body rows remove the duplicate rows and the... (2 Replies)
Discussion started by: kshuser
2 Replies

9. Shell Programming and Scripting

Removing Header & Trailer from a file

Hi All, I am karthik. I am new to this forum. I have one requirement. I have a file with header and footer. Header may be like HDR0001 or FILE20090110 (Assume it is unknown so far, but i am sure there is a header in the file) likewise file has the trailer too. I just... (7 Replies)
Discussion started by: karthi_gana
7 Replies

10. UNIX for Dummies Questions & Answers

Append Header and Trailer

Hi everyone, I am new to Unix programming. My inquries is:- a) How to add a Header and Trailer in the set of data b) Include a number count of the data in the trailer The set of data only contained the information of 'Customer's Name' and 'Account Number'. I would like to add the Header... (2 Replies)
Discussion started by: balzzz
2 Replies
Login or Register to Ask a Question