10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
OSX
I have been grinding my teeth on a portion of code. I am building a bash script that edits a html email template. In the template, I have place holders for SED (or whatever program is appropriate) to use as anchors for find and replace, with user defined corresponding html code. The HTML code... (3 Replies)
Discussion started by: sudo
3 Replies
2. Shell Programming and Scripting
Not able to paste my content. Please see the attachment :-( (2 Replies)
Discussion started by: vivek d r
2 Replies
3. Shell Programming and Scripting
Dear Unix Forums,
I am hoping you can help me with a pattern matching problem.
What am I trying to do?
I want to replace multiple lines of a text file (that match a multi-line pattern) with a single line of text. These patterns can span several lines and do not always have the same number of... (10 Replies)
Discussion started by: thefang
10 Replies
4. Shell Programming and Scripting
Sed replace using same pattern repeating multiple times in a line
I have text like below in a file:
I am trying to replace the above line to following
How can I acheive this?
I am able to do it if the occurrence is for 1 time:
But If I try like below
I am getting like this:
I have to... (4 Replies)
Discussion started by: sol_nov
4 Replies
5. Shell Programming and Scripting
Hi All,
I have a input file as sample below
<this is not starting of file>
record
line1
line2
line3
end
line4
line5
record
line6
line7
line8
my requirement is this, i want to select a pattern between first record and end, whatever is written between first record and end.
and... (0 Replies)
Discussion started by: adgangwar
0 Replies
6. Shell Programming and Scripting
Input:
hello hello
hello hello
monkey
donkey
hello hello
drink
dance
drink
Output should be:
hello hello
monkey
donkey
drink
dance (9 Replies)
Discussion started by: cola
9 Replies
7. Shell Programming and Scripting
Hi,
Below is my input file:
Data: 1
Length: 20
Got result.
Data: 2
Length: 30
No result.
Data: 3
Length: 20 (7 Replies)
Discussion started by: edge_diners
7 Replies
8. Shell Programming and Scripting
I'm attempting to insert multiple lines before a line matching a given search pattern. These lines are generated in a separate function and can either be piped in as stdout or read from a temporary file.
I've been able to insert the lines from a file after the pattern using:
sed -i '/pattern/... (2 Replies)
Discussion started by: zksailor534
2 Replies
9. Shell Programming and Scripting
Hello People,
Need some assistance/guidance.
OUTLINE:
Two files (File1 and File2)
File1 has some ids such as
009463_3922_1827
897654_8764_5432
File2 has things along the lines of:
Query= 009463_3922_1827 length=252
(252 letters)
More stufff here
... (5 Replies)
Discussion started by: Deep9000
5 Replies
10. Shell Programming and Scripting
the file contains the follwoing lines
/*
* Copyright (C) 1995-1996 by XXX Corporation. This program
* contains proprietary and confidential information. All rights reserved
* except as may be permitted by prior written consent.
*
* $Id: xxx_err.h,v 1.10 2001/07/26 18:48:34 zzzz $
... (1 Reply)
Discussion started by: radha.kalivar
1 Replies
SED(1) General Commands Manual SED(1)
NAME
sed - stream editor
SYNOPSIS
sed [ -n ] [ -e script ] [ -f sfile ] [ file ] ...
DESCRIPTION
Sed copies the named files (standard input default) to the standard output, edited according to a script of commands. The -f option causes
the script to be taken from file sfile; these options accumulate. If there is just one -e option and no -f's, the flag -e may be omitted.
The -n option suppresses the default output.
A script consists of editing commands, one per line, of the following form:
[address [, address] ] function [arguments]
In normal operation sed cyclically copies a line of input into a pattern space (unless there is something left after a `D' command),
applies in sequence all commands whose addresses select that pattern space, and at the end of the script copies the pattern space to the
standard output (except under -n) and deletes the pattern space.
An address is either a decimal number that counts input lines cumulatively across files, a `$' that addresses the last line of input, or a
context address, `/regular expression/', in the style of ed(1) modified thus:
The escape sequence `
' matches a newline embedded in the pattern space.
A command line with no addresses selects every pattern space.
A command line with one address selects each pattern space that matches the address.
A command line with two addresses selects the inclusive range from the first pattern space that matches the first address through the next
pattern space that matches the second. (If the second address is a number less than or equal to the line number first selected, only one
line is selected.) Thereafter the process is repeated, looking again for the first address.
Editing commands can be applied only to non-selected pattern spaces by use of the negation function `!' (below).
In the following list of functions the maximum number of permissible addresses for each function is indicated in parentheses.
An argument denoted text consists of one or more lines, all but the last of which end with `' to hide the newline. Backslashes in text
are treated like backslashes in the replacement string of an `s' command, and may be used to protect initial blanks and tabs against the
stripping that is done on every script line.
An argument denoted rfile or wfile must terminate the command line and must be preceded by exactly one blank. Each wfile is created before
processing begins. There can be at most 10 distinct wfile arguments.
(1)a
text
Append. Place text on the output before reading the next input line.
(2)b label
Branch to the `:' command bearing the label. If label is empty, branch to the end of the script.
(2)c
text
Change. Delete the pattern space. With 0 or 1 address or at the end of a 2-address range, place text on the output. Start the
next cycle.
(2)d Delete the pattern space. Start the next cycle.
(2)D Delete the initial segment of the pattern space through the first newline. Start the next cycle.
(2)g Replace the contents of the pattern space by the contents of the hold space.
(2)G Append the contents of the hold space to the pattern space.
(2)h Replace the contents of the hold space by the contents of the pattern space.
(2)H Append the contents of the pattern space to the hold space.
(1)i
text
Insert. Place text on the standard output.
(2)n Copy the pattern space to the standard output. Replace the pattern space with the next line of input.
(2)N Append the next line of input to the pattern space with an embedded newline. (The current line number changes.)
(2)p Print. Copy the pattern space to the standard output.
(2)P Copy the initial segment of the pattern space through the first newline to the standard output.
(1)q Quit. Branch to the end of the script. Do not start a new cycle.
(2)r rfile
Read the contents of rfile. Place them on the output before reading the next input line.
(2)s/regular expression/replacement/flags
Substitute the replacement string for instances of the regular expression in the pattern space. Any character may be used instead
of `/'. For a fuller description see ed(1). Flags is zero or more of
g Global. Substitute for all nonoverlapping instances of the regular expression rather than just the first one.
p Print the pattern space if a replacement was made.
w wfile
Write. Append the pattern space to wfile if a replacement was made.
(2)t label
Test. Branch to the `:' command bearing the label if any substitutions have been made since the most recent reading of an input
line or execution of a `t'. If label is empty, branch to the end of the script.
(2)w wfile
Write. Append the pattern space to wfile.
(2)x Exchange the contents of the pattern and hold spaces.
(2)y/string1/string2/
Transform. Replace all occurrences of characters in string1 with the corresponding character in string2. The lengths of string1
and string2 must be equal.
(2)! function
Don't. Apply the function (or group, if function is `{') only to lines not selected by the address(es).
(0): label
This command does nothing; it bears a label for `b' and `t' commands to branch to.
(1)= Place the current line number on the standard output as a line.
(2){ Execute the following commands through a matching `}' only when the pattern space is selected.
(0) An empty command is ignored.
SEE ALSO
ed(1), grep(1), awk(1), lex(1)
7th Edition April 29, 1985 SED(1)