I am using HP UX and think this may be done with awk but bot sure.
I have a file with a several header records and undeneath many detail records I need to put in the header record the number of detail records above this header record and number of detail records below this header record
Header... (5 Replies)
Hi All,
I am trying to execute the following tar command with two --exclude options to suppress extract of the two directories specified.
Do I need to single quote the directory paths ??
Many thanks for your help.
The relevant code excerpt from the script is:
cd /var/www/${SITE}
... (7 Replies)
Hi! Is there a way to append column and row header to a file in awk script.
For example if I have
Jane F 39 manager
Carlos M 40 system administrator
Sam F 20 programmer
and I want it to be
# name gend age occup
1 Jane F 39 manager
2 Carlos M ... (4 Replies)
Hi All,
File contains header row.. we need to exclude the header row...no need to validate the first row in the file.
Data in the file should take valid data(two columns)..we need to exclude the more than two columns in the file except the first line.
email|firstname
a|123|100
b|345... (4 Replies)
Greetings!
I have been trying to find out a way to take a CSV file with a large number of rows, and a very large number of columns (in the thousands) and convert the rows to a single column of data, where the first row is a header representing the attribute name and the subsequent series of... (3 Replies)
Hi All,
i have script like ...
"TYPE_ID" "ID" "LIST_ID"
"18" "52010" "1059"
"18" "52010" "1059"
"18" "52010" "1059"
"18" "52010" "1059"
i am using the below code it's not taking the header row.
awk -F"\t" -v file=test1.txt -v file1=test2.txt ' {
if(... (7 Replies)
I have a shell script (.sh) and I want to pass a parameter value to the awk command but I am getting exception, please assist.
diff=$1$2.diff
id=$2 new=new_$diff
echo "My id is $1"
echo "I want to sync for user account $id"
##awk command I am using is as below
cat $diff | awk... (2 Replies)
Hi,
I need to display specific columns using select statement and spooled to a file and sending it as e-mail. But i am not seeing column header in my output even i use SET HEADING ON.//PREDEFINED LOGIN DETAILS
${ORACLE_HOME}/bin/sqlplus -s ${DB_LOGIN}/${DB_PASSWD} <<EOF
SET FEEDBACK OFF
SET... (1 Reply)
Hi there,
Where do I add the !NR==1 into the awk statement such that it ignores the first line .
awk '/1.2 Install/ {P=0} /1.1 Apply/ {P=1} P {print FILENAME, $0} ' solarisappsummary.txt solarisdbsummary.txt solaris_websummary.txt (12 Replies)
I have a csv which has lot of columns . I was looking for an awk script which would extract a column twice. for the first occurance the header and data needs to be intact but for the second occurance i want to replace the header name since it a duplicate and extract year value which is in ddmmyy... (10 Replies)
Discussion started by: Kunalcurious
10 Replies
LEARN ABOUT MOJAVE
tail
TAIL(1) BSD General Commands Manual TAIL(1)NAME
tail -- display the last part of a file
SYNOPSIS
tail [-F | -f | -r] [-q] [-b number | -c number | -n number] [file ...]
DESCRIPTION
The tail utility displays the contents of file or, by default, its standard input, to the standard output.
The display begins at a byte, line or 512-byte block location in the input. Numbers having a leading plus ('+') sign are relative to the
beginning of the input, for example, ``-c +2'' starts the display at the second byte of the input. Numbers having a leading minus ('-') sign
or no explicit sign are relative to the end of the input, for example, ``-n 2'' displays the last two lines of the input. The default start-
ing location is ``-n 10'', or the last 10 lines of the input.
The options are as follows:
-b number
The location is number 512-byte blocks.
-c number
The location is number bytes.
-f The -f option causes tail to not stop when end of file is reached, but rather to wait for additional data to be appended to the
input. The -f option is ignored if the standard input is a pipe, but not if it is a FIFO.
-F The -F option implies the -f option, but tail will also check to see if the file being followed has been renamed or rotated. The
file is closed and reopened when tail detects that the filename being read from has a new inode number. The -F option is ignored if
reading from standard input rather than a file.
-n number
The location is number lines.
-q Suppresses printing of headers when multiple files are being examined.
-r The -r option causes the input to be displayed in reverse order, by line. Additionally, this option changes the meaning of the -b,
-c and -n options. When the -r option is specified, these options specify the number of bytes, lines or 512-byte blocks to display,
instead of the bytes, lines or blocks from the beginning or end of the input from which to begin the display. The default for the -r
option is to display all of the input.
If more than a single file is specified, each file is preceded by a header consisting of the string ``==> XXX <=='' where XXX is the name of
the file unless -q flag is specified.
EXIT STATUS
The tail utility exits 0 on success, and >0 if an error occurs.
SEE ALSO cat(1), head(1), sed(1)STANDARDS
The tail utility is expected to be a superset of the IEEE Std 1003.2-1992 (``POSIX.2'') specification. In particular, the -F, -b and -r
options are extensions to that standard.
The historic command line syntax of tail is supported by this implementation. The only difference between this implementation and historic
versions of tail, once the command line syntax translation has been done, is that the -b, -c and -n options modify the -r option, i.e., ``-r
-c 4'' displays the last 4 characters of the last line of the input, while the historic tail (using the historic syntax ``-4cr'') would
ignore the -c option and display the last 4 lines of the input.
HISTORY
A tail command appeared in PWB UNIX.
BSD June 29, 2006 BSD