10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hi guys,
I am coding a bash script that makes use of php scripts to pull URL's from a website. These url links will have numbers in them like 0.2.3
I want to make a regex that will yield me such numbers if I use a command like preg_grep.
Question1: I need a regex that will tell my preg_grep... (2 Replies)
Discussion started by: mojoman
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2. Shell Programming and Scripting
Hi I am trying to pattern match with sed, if it finds a match I need it to insert characters at the 28th position, its working but its also adding an extra space and I don't know why, below is the code.
sed 's/715023044/\n&/g' $asn | sed '/^71502304413-000/s/./B4/28' | sed -e :a -e... (4 Replies)
Discussion started by: firefox2k2
4 Replies
3. Shell Programming and Scripting
Hi All
I need to put some sed together for a task and its a bit advanced for me, so I thought I'd ask if anyone here could help.
I have a csv file with content like this -
"","abcde","",""
"'","abcde","",""
"","","","1234"
"'e'","","",""
I need to remove any single quotes that fall... (17 Replies)
Discussion started by: steadyonabix
17 Replies
4. Shell Programming and Scripting
hi
i have a requirement to replace a string with another using sed and to get the result newline separated but after sed replacement the newline vanishes
below is sample code
#!/bin/ksh
set -x
string="name sam\nage 45 \nsport soccer"
echo $string
string=`echo $string | sed... (2 Replies)
Discussion started by: midhun19
2 Replies
5. UNIX for Dummies Questions & Answers
Hi
Can some one tell what does this sed command do
sed 's/*$//g
I am more curious on the highlighted part , can some one explain what does that mean.
Thanks
Sri (1 Reply)
Discussion started by: Sri3001
1 Replies
6. Shell Programming and Scripting
Hi All,
I have one file with below type of data in it,
$ cat test.txt
###123
###xyxytuerwb
###2
###tyupe
Here I would like to replace all the characters with "x" after the 3 "###" with the same number of characters.
Can you please help me to achieve this. (7 Replies)
Discussion started by: gr8_usk
7 Replies
7. Shell Programming and Scripting
Hi
I have a file, with format like:
column1|coulumn2|column3|column4
A|X|K|18
L|O|R|31,42,25
G|H|I|55,66
L|E|Q|25,31,94
output required:
column1|coulumn2|column3|column4
A|X|K|18
L|O|R|31,25
L|E|Q|25,31
Input File Format: All columns are seperated using |, last column... (8 Replies)
Discussion started by: New to awk
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8. Shell Programming and Scripting
Hi All,
I need to pick up data on both sides of "=" sign.
For eg, following is the context that I have.
125.156.125.147=machine1
147.125.185.156=machine2
147.125.185.159=machine3
Can I have the ip address in one variable and machine name in another variable using sed or awk.
... (1 Reply)
Discussion started by: nua7
1 Replies
9. UNIX for Dummies Questions & Answers
Hi Gurus,
I have a small requirement.
Let suppose i have a file test.txt
test.txt contains
Dispatched date = '2008-04-08'
Name = 'Logers'
Now i want to add one more line to it as Number of Responses = "$a"
$a will be chnaging dynamically which i had grepped it in the script.
Now i... (6 Replies)
Discussion started by: pssandeep
6 Replies
10. Shell Programming and Scripting
Collegues
I have a flat file with data in following structure.
(S1 (S (NP (NP (DT The) (JJ beautiful) (NN view)) (PP (IN of) (NP (JJ outside) (NNP greenery)))) (VP (VBZ adds) (NP (DT a) (NN tranquil) (NN touch)) (PP (TO to) (NP (DT this) (NN place)))) (. .)))
I have to extract the contents in... (2 Replies)
Discussion started by: jaganadh
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SUPER-SED(1) User Commands SUPER-SED(1)
NAME
ssed - super sed stream editor version 3.61
SYNOPSIS
sed [OPTION]... {script-only-if-no-other-script} [input-file]...
DESCRIPTION
Sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipe-
line). While in some ways similar to an editor which permits scripted edits (such as ed), sed works by making only one pass over the
input(s), and is consequently more efficient. But it is sed's ability to filter text in a pipeline which particularly distinguishes it
from other types of editors.
-n, --quiet, --silent
suppress automatic printing of pattern space
-e script, --expression=script
add the script to the commands to be executed
-f script-file, --file=script-file
add the contents of script-file to the commands to be executed
-i[SUFFIX], --in-place[=SUFFIX]
edit files in place (makes backup if extension supplied)
-l N, --line-length=N
specify the desired line-wrap length for the `l' command
--posix
disable all GNU extensions.
-r, --regexp-extended
use extended regular expressions in the script.
-R, --regexp-perl
use Perl 5's regular expressions syntax in the script.
-s, --separate
consider files as separate rather than as a single continuous long stream.
-u, --unbuffered
load minimal amounts of data from the input files and flush the output buffers more often
--help
display this help and exit
--version
output version information and exit
If no -e, --expression, -f, or --file option is given, then the first non-option argument is taken as the sed script to interpret. All
remaining arguments are names of input files; if no input files are specified, then the standard input is read.
E-mail bug reports to: bonzini@gnu.org . Be sure to include the word ``ssed'' somewhere in the ``Subject:'' field.
based on GNU sed version 4.1
COMMAND SYNOPSIS
This is just a brief synopsis of sed commands to serve as a reminder to those who already know sed; other documentation (such as the tex-
info document) must be consulted for fuller descriptions.
Zero-address ``commands''
: label
Label for b and t commands.
#comment
The comment extends until the next newline (or the end of a -e script fragment).
} The closing bracket of a { } block.
Zero- or One- address commands
= Print the current line number.
a
text Append text, which has each embedded newline preceded by a backslash.
i
text Insert text, which has each embedded newline preceded by a backslash.
q Immediately quit the sed script without processing any more input, except that if auto-print is not disabled the current pattern
space will be printed.
Q Immediately quit the sed script without processing any more input.
r filename
Append text read from filename.
R filename
Append a line read from filename.
Commands which accept address ranges
{ Begin a block of commands (end with a }).
b label
Branch to label; if label is omitted, branch to end of script.
t label
If a s/// has done a successful substitution since the last input line was read and since the last t or T command, then branch to
label; if label is omitted, branch to end of script.
T label
If no s/// has done a successful substitution since the last input line was read and since the last t or T command, then branch to
label; if label is omitted, branch to end of script.
c
text Replace the selected lines with text, which has each embedded newline preceded by a backslash.
d Delete pattern space. Start next cycle.
D Delete up to the first embedded newline in the pattern space. Start next cycle, but skip reading from the input if there is still
data in the pattern space.
h H Copy/append pattern space to hold space.
g G Copy/append hold space to pattern space.
x Exchange the contents of the hold and pattern spaces.
l List out the current line in a ``visually unambiguous'' form.
n N Read/append the next line of input into the pattern space.
p Print the current pattern space.
P Print up to the first embedded newline of the current pattern space.
s/regexp/replacement/
Attempt to match regexp against the pattern space. If successful, replace that portion matched with replacement. The replacement
may contain the special character & to refer to that portion of the pattern space which matched, and the special escapes 1 through
9 to refer to the corresponding matching sub-expressions in the regexp.
w filename
Write the current pattern space to filename.
W filename
Write the first line of the current pattern space to filename.
y/source/dest/
Transliterate the characters in the pattern space which appear in source to the corresponding character in dest.
Addresses
Sed commands can be given with no addresses, in which case the command will be executed for all input lines; with one address, in which
case the command will only be executed for input lines which match that address; or with two addresses, in which case the command will be
executed for all input lines which match the inclusive range of lines starting from the first address and continuing to the second address.
Three things to note about address ranges: the syntax is addr1,addr2 (i.e., the addresses are separated by a comma); the line which addr1
matched will always be accepted, even if addr2 selects an earlier line; and if addr2 is a regexp, it will not be tested against the line
that addr1 matched.
After the address (or address-range), and before the command, a ! may be inserted, which specifies that the command shall only be executed
if the address (or address-range) does not match.
The following address types are supported:
number Match only the specified line number.
first~step
Match every step'th line starting with line first. For example, ``sed -n 1~2p'' will print all the odd-numbered lines in the input
stream, and the address 2~5 will match every fifth line, starting with the second. (This is an extension.)
$ Match the last line.
/regexp/
Match lines matching the regular expression regexp.
cregexpc
Match lines matching the regular expression regexp. The c may be any character.
GNU sed also supports some special 2-address forms:
0,addr2
Start out in "matched first address" state, until addr2 is found. This is similar to 1,addr2, except that if addr2 matches the very
first line of input the 0,addr2 form will be at the end of its range, whereas the 1,addr2 form will still be at the beginning of its
range.
addr1,+N
Will match addr1 and the N lines following addr1.
addr1,~N
Will match addr1 and the lines following addr1 until the next line whose input line number is a multiple of N.
REGULAR EXPRESSIONS
POSIX.2 BREs should be supported, but they aren't completely because of performance problems. The
sequence in a regular expression
matches the newline character, and similarly for a, , and other sequences.
BUGS
E-mail bug reports to bonzini@gnu.org. Be sure to include the word ``sed'' somewhere in the ``Subject:'' field. Also, please include the
output of ``sed --version'' in the body of your report if at all possible.
COPYRIGHT
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
LAR PURPOSE, to the extent permitted by law.
SEE ALSO
awk(1), ed(1), grep(1), tr(1), perlre(1), sed.info, any of various books on sed, the sed FAQ (http://sed.sf.net/grabbag/tutorials/sed-
faq.html), http://sed.sf.net/grabbag/.
The full documentation for super-sed is maintained as a Texinfo manual. If the info and super-sed programs are properly installed at your
site, the command
info sed
should give you access to the complete manual.
super-sed version 3.61 February 2005 SUPER-SED(1)