try this:
If this outputs to the screen as expected (this does not update the file) then the inner 'i' (insert command) is working fine.
Next try:
If either gives an error then you may have to upgrade sed to get the use of the 'inline' flag (-i) or the insert command ('i\text') to be able to do this without writing to another file first and specifying a line number.
Hello,
I need to insert a line (like a header) as the first line of a very huge file (about 3 ml rows). I am able to do it with sed, but redirecting the output and creating a new file takes quite some time. I was wondering if there was a more efficient way of doing it?
Any help would be... (3 Replies)
folks,
In my working directory, there a multiple large files which only contain one line in the file. The line is too long to use "grep", so any help?
For example, if I want to find if these files contain a string like "93849", what command I should use?
Also, there is oder_id number... (1 Reply)
Hi,
I have a huge file of bibliographic records in some standard format.I need a script to do some repeatable task as follows:
1. Needs to create folders as the strings starts with "item_*" from the input file
2. Create a file "contents" in each folders having "license.txt(tab... (5 Replies)
hi all,
In an mp3 file , data is arranged in sequence of header and data ,how to retrieve data between two headers. Is the data between two headers fixed? because as per theory it says 1152 samples will be there , but dont knw how many bits one sample correspond to?
it would help if any c... (2 Replies)
I’m new to Linux script and not sure how to filter out bad records from huge flat files (over 1.3GB each). The delimiter is a semi colon “;”
Here is the sample of 5 lines in the file:
Name1;phone1;address1;city1;state1;zipcode1
Name2;phone2;address2;city2;state2;zipcode2;comment... (7 Replies)
Hi, Great minds, I have some files, in fact header files, of CTD profiler, I tried a lot C programming, could not get output as I was expected, because my programming skills are very poor, finally, joined unix forum with the hope that, I may get what I want, from you people,
Here I have attached... (17 Replies)
I'm trying to take mrt output and put it at the top of a file along with the date and time. I was able to do it at the bottom of the file with the following
printf "********** $(date) **********\n\n" >> $OUTPUT_PATH/$HOSTNAME
mtr -r -w -c 10 $HOSTADDRESS >> $OUTPUT_PATH/$HOSTNAME
printf... (2 Replies)
Optimization shell/awk script to aggregate (sum) for all the columns of Huge data file
File delimiter "|"
Need to have Sum of all columns, with column number : aggregation (summation) for each column
File not having the header
Like below -
Column 1 "Total
Column 2 : "Total
...
...... (2 Replies)
I have 2 large file (.dat) around 70 g, 12 columns but the data not sorted in both the files.. need your inputs in giving the best optimized method/command to achieve this and redirect the not macthing lines to the thrid file ( diff.dat)
File 1 - 15 columns
File 2 - 15 columns
Data is... (9 Replies)
Discussion started by: kartikirans
9 Replies
LEARN ABOUT HPUX
smfi_insheader
smfi_insheader(3N)smfi_insheader(3N)NAME
smfi_insheader() - prepends a header to the current sendmail message
SYNOPSIS PARAMETERS
ctx Specifies the opaque context structure.
hdridx Specifies the location in the internal header list where the header must be inserted. A value of 0 (zero) places the header in
the beginning of the header.
headerf Specifies the header name, which is a non-NULL, null-terminated string.
headerv Specifies the header value to be added. A header value is a non-NULL, null-terminated string and can be an empty string.
DESCRIPTION
prepends a header to the current message. can be called only from the function.
Notes
o does not change existing headers of a message. To change the current value of a header, use the routine.
o A filter that calls must set the flag in the structure passed to the routine.
o For the filter, the order in which filters are placed is imporant. Filters placed later in the sequence will observe the changes
already done by the earlier filters.
o If the value of hdridx larger than the number of headers in the message, the header is simply be appended.
o The name and the value of the header are not checked for standards compliance. However, each line of the header must be under 2048
characters. If longer headers are needed, multi-line header must be used. To make a multi-line header, insert a linefeed (ASCII 0x0a,
or
in C) followed by at least one whitespace character, such as, a space (ASCII 0x20) or tab (ASCII 0x09, or in C). The linefeed
must not be preceded by a carriage return (ASCII 0x0d); the MTA adds this automatically. It is the responsibility of the filter writer
to ensure that standards are not violated.
RETURN VALUE
returns due to the following reasons:
o The headerf or headerv value is NULL.
o Adding headers in the current connection state is invalid.
o Memory allocation fails.
o Network error occurs.
o is not set when is called.
returns on success.
EXAMPLES AUTHOR
was developed by the Sendmail Inc.
SEE ALSO smfi_chgheader(3N), smfi_addheader(3N), smfi_addrcpt(3N), smfi_delrcpt(3N), smfi_replacebody(3N).
on
smfi_insheader(3N)