head and tail cannot add any information on their own. For easy string replacements, you probably want sed.
This will search for "<data" and perform a substitution ("s") of "-server" with "-server -MyParameter" (the & is magical and means "whatever we are substituting") on that line. Other lines are printed unchanged.
Script 1
Pre-requisites
Create a file with x amount of lines in it, the content of your choice.
Write a script that takes two arguments. The first being a line of text, the second being your newly created file. The script should take the first argument and insert it into the very top (the... (3 Replies)
Can anyone help me pls? I want to add a text into the middle of file.
I've writtenthe following script
text to add="$1"
file="$2"
lines=$(wc -l $2)
half_lines=$(expr $lines / 2)
head -$half_lines $2 > temp
echo "text to add" >> temp
((half_lines=$half_lines + 1))
tail -$half_lines $2... (6 Replies)
I need a script to process a huge single line text file:
The sample of the text is:
"forward_inline_item": "Inline", "options_region_Australia": "Australia", "server_event_err_msg": "There was an error attempting to save", "Token": "Yes", "family": "Family","pwd_login_tab": "Enter Your... (1 Reply)
Hello,
Need help substituting a particular word in a file having a single line but no newline character at the end.
I was trying to use sed but it doesn't work probably because there is no newline char at the end of the line.
$ cat hlq_detail
/outputs/alvan23/PDFs/bills
$ cat... (5 Replies)
Hi ,
how to add the single digit to front of the word and front of the lines in the one file with compare pattern file and get digit. like example
pattern file pattern.txt
pattern num
bala 2
raja 3
muthu 4
File Name: chennai.dat
muthu is good boy
raja is bad boy
selvam in super... (6 Replies)
Hi, I have a single colum file and I need to reformat the file so that it creates a new line every time it come to an IP address and the following lines are corresponding rows until it comes to the next IP address.
I want to turn this
172.xx.xx.xx
gwpusprdrp02_pv
seinwnprd03... (7 Replies)
I am trying to get text from a webpage, in terminal form. So far I am:
1. getting the html for the page printed using curl (curl -s webpage.com), which is then
2. piped to awk, printing line number 29 (awk NR==29), then
3. this is where I am sort of lost. I know where in the printed line I... (7 Replies)
I would like to add a line to the end of a single column text file. How do I go about doing that?
Input:
BEGIN
1
2
3
Output:
BEGIN
1
2
3
END
Thanks! (1 Reply)
Below code extracts multiple field values from XML into array and prints all in one line.
perl -nle '@r=/(?: jndiName| authDataAlias| value| minConnections| maxConnections| connectionTimeout| name)="(+)/g and print join ",",$ENV{tIPnSCOPE},$ENV{pr
ovider},$ENV{impClassName},@r' server.xml
... (4 Replies)
Discussion started by: kchinnam
4 Replies
LEARN ABOUT OSF1
head
head(1) General Commands Manual head(1)NAME
head - Displays the beginning of files
SYNOPSIS
Current Syntax
head [-c bytes] [-n lines] [file...]
Obsolescent Syntax
head [-lines] [file...]
STANDARDS
Interfaces documented on this reference page conform to industry standards as follows:
head: XCU5.0
Refer to the standards(5) reference page for more information about industry standards and associated tags.
OPTIONS
The default count is 10. [Tru64 UNIX] Specifies the number of bytes to display. If the last byte written is not a newline character, a
newline character is appended to the output. Specifies the number of lines to display Works exactly as -n lines. Obsolescent.
OPERANDS
Path name of the input file. If you do not specify a file, head reads standard input.
DESCRIPTION
The head command copies the standard input to standard output, ending output of each file at the specified point.
NOTES
The obsolescent form is subject to withdrawal at any time.
EXIT STATUS
The following exit values are returned: Successful completion. An error occurred.
EXAMPLES
To display the first 5 lines of a file called test, enter: head -n 5 test To display the first ten lines of all files (except those with a
name beginning with a period), enter: head *
ENVIRONMENT VARIABLES
The following environment variables affect the execution of head: Provides a default value for the internationalization variables that are
unset or null. If LANG is unset or null, the corresponding value from the default locale is used. If any of the internationalization vari-
ables contain an invalid setting, the utility behaves as if none of the variables had been defined. If set to a non-empty string value,
overrides the values of all the other internationalization variables. Determines the locale for the interpretation of sequences of bytes
of text data as characters (for example, single-byte as opposed to multibyte characters in arguments and input files). Determines the
locale for the format and contents of diagnostic messages written to standard error. Determines the location of message catalogues for the
processing of LC_MESSAGES.
SEE ALSO
Commands: cat(1), more(1), pg(1), sed(1), tail(1)
Standards: standards(5)head(1)