11-08-2007
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
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
2. Shell Programming and Scripting
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
3. Shell Programming and Scripting
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
4. UNIX for Dummies Questions & Answers
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
5. UNIX for Dummies Questions & Answers
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
6. Shell Programming and Scripting
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
7. Shell Programming and Scripting
please see my requirement, I hope I am clear. (9 Replies)
Discussion started by: mirwasim
9 Replies
8. UNIX for Dummies Questions & Answers
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
9. Shell Programming and Scripting
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
10. UNIX for Beginners Questions & Answers
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
LEARN ABOUT NETBSD
uuencode
UUENCODE(5) BSD File Formats Manual UUENCODE(5)
NAME
uuencode -- format of an encoded uuencode file
DESCRIPTION
Files output by uuencode(1) consist of a header line, followed by a number of body lines, and a trailer line. The uudecode(1) command will
ignore any lines preceding the header or following the trailer. Lines preceding a header must not, of course, look like a header.
The header line starts with the word ``begin'', a space, a file mode (in octal), a space, and finally a string which names the file being
encoded.
The central engine of uuencode(1) is a six-bit encoding function which outputs an ASCII character. The six bits to be encoded are treated as
a small integer and added with the ASCII value for the space character (octal 40). The result is a printable ASCII character. In the case
where all six bits to be encoded are zero, the ASCII backquote character ` (octal 140) is emitted instead of what would normally be a space.
The body of an encoded file consists of one or more lines, each of which may be a maximum of 86 characters long (including the trailing new-
line). Each line represents an encoded chunk of data from the input file and begins with a byte count, followed by encoded bytes, followed
by a newline.
The byte count is a six-bit integer encoded with the above function, representing the number of bytes encoded in the rest of the line. The
method used to encode the data expands its size by 133% (described below). Therefore it is important to note that the byte count describes
the size of the chunk of data before it is encoded, not afterwards. The six bit size of this number effectively limits the number of bytes
that can be encoded in each line to a maximum of 63. While uuencode(1) will not encode more than 45 bytes per line, uudecode(1) will toler-
ate the maximum line size.
The remaining characters in the line represent the data of the input file encoded as follows. Input data are broken into groups of three
eight-bit bytes, which are then interpreted together as a 24-bit block. The first bit of the block is the highest order bit of the first
character, and the last is the lowest order bit of the third character. This block is then broken into four six-bit integers which are
encoded one by one starting from the first bit of the block. The result is a four character ASCII string for every three bytes of input
data.
Encoded lines of data continue in this manner until the input file is exhausted. The end of the body is signaled by an encoded line with a
byte count of zero (the ASCII backquote character `).
Obviously, not every input file will be a multiple of three bytes in size. In these cases, uuencode(1) will pad the remaining one or two
bytes of data with garbage bytes until a three byte group is created. The byte count in a line containing garbage padding will reflect the
actual number of bytes encoded, making it possible to convey how many bytes are garbage.
The trailer line consists of ``end'' on a line by itself.
SEE ALSO
mail(1), uucp(1), uudecode(1), uuencode(1), ascii(7)
HISTORY
The uuencode file format appeared in 4.0BSD.
BUGS
The interpretation of the uuencode format relies on properties of the ASCII character set and may not work correctly on non-ASCII systems.
BSD
April 9, 1997 BSD