Sponsored Content
Top Forums Shell Programming and Scripting improve performance - replace $\| with $#@ and remove header and trailer records Post 302454210 by HemaV on Friday 17th of September 2010 11:20:48 AM
Old 09-17-2010
improve performance - replace $\| with $#@ and remove header and trailer records

Hi All,

In my file i need to remove header and trailer records which comes in 1st line and last line respectively. After that i need to replace '$\|' with '$#@'.
I am using sed command for this and its taking lot of time. Is there any other command which can be used to improve performance?

Thanks in Advance,
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Remove header(first line) and trailer(last line) in ANY given file

Hi, I need some help in removing the header (first line) and the trailer (last line) in a give file... The data file actually comes in EBCDIC format and I converted it into ASCII.. Now I need to strip off the first line and the last line.. I think we can use sed to do something like this:... (2 Replies)
Discussion started by: madhunk
2 Replies

2. Shell Programming and Scripting

Count No of Records in File without counting Header and Trailer Records

I have a flat file and need to count no of records in the file less the header and the trailer record. I would appreciate any and all asistance Thanks Hadi Lalani (2 Replies)
Discussion started by: guiguy
2 Replies

3. UNIX for Dummies Questions & Answers

Copy all the files with time stamp and remove header,trailer from file

All, I am new to unix and i have the following requirement. I have file(s) landing into input directory with timestamp, first i want to copy all these files into seperate directory then i want to rename these files without timestamp and also remove header,trailer from that file.. Could... (35 Replies)
Discussion started by: ksrams
35 Replies

4. UNIX for Dummies Questions & Answers

Remove header from files: optimal performance

I need to concatenate about a thousand files (using a loop) on a UNIX server. Also, each file has a header row which is to be removed. Which of the following would give better performance? tail+2 <filename> or sed '1,1d' <filename> Or is there another, faster way? Thanks, Kaus (4 Replies)
Discussion started by: kausmone
4 Replies

5. 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

6. Shell Programming and Scripting

Merge text files while combining the multiple header/trailer records into one each.

Situation: Our system currently executes a job (COBOL Program) that generates an interface file to be sent to one of our vendors. Because this system processes information for over 100,000 employees/retirees (and growing), we'd like to multi-thread the job into processing-groups in order to... (4 Replies)
Discussion started by: oordonez
4 Replies

7. 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

8. Shell Programming and Scripting

Adding Header and Trailer records to a appended file

How can we a shell script and pass date parameters .I have 3 files comming from Datastage with |" delimited I need append 3 files as above: File1: P0000|"47416954|"AU|"000|"INS|"0000|"|"20060601|"99991231|"|"|"|"|"01 File 2:... (2 Replies)
Discussion started by: e1994264
2 Replies

9. Shell Programming and Scripting

Remove last few characters in a file but keeping Header and trailer intact

Hi All, I am trying write a simple command using AWK and SED to this but without any success. Here is what I am using: head -1 test1.txt>test2.txt|sed '1d;$d' test1.txt|awk '{print substr($0,0,(length($0)-2))}' >>test2.txt|tail -1 test1.txt>>test2.txt Input: Header 1234567 abcdefgh... (2 Replies)
Discussion started by: nvuradi
2 Replies

10. 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
uuencode(5)							File Formats Manual						       uuencode(5)

Name
       uuencode - format of an encoded uuencode file

Description
       Files  output by consist of a header line, followed by a number of body lines, and a trailer line.  The command ignores any lines preceding
       the header or following the trailer.  Lines preceding a header must not, of course, look like a header.

       The header line is distinguished by having the first six characters by the word ``begin'', followed by a space.	The next item on the  line
       is a mode (in octal) and a string which names the remote file.  A space separates the three items in the header line.

       The  body  consists  of	a  number of lines, each at most 62 characters long including the trailing new line.  These consist of a character
       count, followed by encoded characters, followed by a new line.  The character count is a single printing character and represents an  inte-
       ger, the number of bytes the rest of the line represents.  Such integers are always in the range from 0 to 63 and can be determined by sub-
       tracting the character space (octal 40) from the character.

       Groups of 3 bytes are stored in 4 characters, with 6 bits per character.  All are offset by a space to make the characters print.  The last
       line may be shorter than the normal 45 bytes.  If the size is not a multiple of 3, this fact can be determined by the value of the count on
       the last line.  Extra dummy characters are included to make the character count a multiple of 4.  The body is terminated by a line  with  a
       count of zero.  This line consists of one ASCII space.

       The trailer line consists of "end" on a line by itself.

See Also
       mail(1), uucp(1c), uudecode(1c), uuencode(1c), uusend(1c)

																       uuencode(5)
All times are GMT -4. The time now is 03:36 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy