If i have a string as below:
How can i match the pattern "http:" and replace the start of the string to the pattern with null?
I tried the following but it doesn't work:
TIA
You did some mistake in your code. Because in the regular expression you are not match correctly. The following code will give the correct answer
or use the following code
Hello All,
I have a string "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031", and I just want to extract LLSV1, but I dont get the expected result when using the sed command below.
# echo "CP_STATUS OSSRC_R6_0_Shipment_R1H_CU AOM_901046 R1H_LLSV1_2008031" | awk '{print... (4 Replies)
This is my first post, please be nice. I have tried to google and read different tutorials.
The task at hand is:
Input file input.txt (example)
abc123defhij-E-1234jslo
456ujs-W-abXjklp
From this file the task is to grep the -E- and -W- strings that are unique and write a new file... (5 Replies)
Hi All,
I have a requirement where I have to find a pattern in a file and comment the whole line containing the search pattern. Any ideas in shell is welcome.
Thanks in advance,
Regards,
Arun (3 Replies)
I inherited a script that contains the following sed command:
sed -n -e '/^.*ABCD|/p' $fileName | sed -e 's/^.*ABCD|//' | sed -e 's/|ABCD$//' > ${fileName}.tmp
What I'm wondering is whether ABCD has a special pattern matching value in sed, such as a character class similar or identical to .
... (9 Replies)
I couldn't figure out how to use sed or any other shell to do the following. Can anyone help? Thanks.
If seeing a string (e.g., TODAY) in the line,
replace a string in the line above (e.g, replace "Raining" with "Sunny")
and replace a string in the line below (e.g., replace "Reading" with... (7 Replies)
Hi
I have written a shell script which used sed code below
sed -i 's/'"$Pattern"'/ /g' $FileName
I want to count the length of Pattern and replace it with equal number of spaces in the FileName.
I have used $(#pattern) to get the length but could not understand how to replace... (8 Replies)
Hi I just wanted to add a new line after every matching pattern:
The method doing this doesn't matter, however, I have been using sed and this is what I tried doing, knowing that I am a bit off:
sed 'Wf a\'/n'/g'
Basically, I want to add a new line after occurrence of Wf. After the line Wf... (5 Replies)
'Hi
I'm using the following code to extract the lines(and redirect them to a txt file) after the pattern match. But the output is inclusive of the line with pattern match.
Which option is to be used to exclude the line containing the pattern?
sed -n '/Conn.*User/,$p' > consumers.txt (11 Replies)
Hi Guys!
Unix newbie here!
Have a requirement for which I have been scouting the forums for a solution but has been out of luck so far :(
I have a file which contains the following:-
TEST1|TEST2|"TEST3|1@!2"|TEST5
My sed command should result in either one the following output:-... (6 Replies)
Hi Team,
I am facing a problem as under, Suppose I have a file (test.txt) with the below content (all braces and slashes are included in the contents of the file)
Now I want to append few words below matched line, I have written the below sed:
sed '/option/a insert text here' test... (2 Replies)
Discussion started by: ankur328
2 Replies
LEARN ABOUT SUNOS
regex
regex(1F) FMLI Commands regex(1F)NAME
regex - match patterns against a string
SYNOPSIS
regex [-e] [ -v "string"] [ pattern template] ... pattern [template]
DESCRIPTION
The regex command takes a string from the standard input, and a list of pattern / template pairs, and runs regex() to compare the string
against each pattern until there is a match. When a match occurs, regex writes the corresponding template to the standard output and
returns TRUE. The last (or only) pattern does not need a template. If that is the pattern that matches the string, the function simply
returns TRUE. If no match is found, regex returns FALSE.
The argument pattern is a regular expression of the form described in regex(). In most cases, pattern should be enclosed in single quotes
to turn off special meanings of characters. Note that only the final pattern in the list may lack a template.
The argument template may contain the strings $m0 through $m9, which will be expanded to the part of pattern enclosed in ( ... )$0 through
( ... )$9 constructs (see examples below). Note that if you use this feature, you must be sure to enclose template in single quotes so
that FMLI does not expand $m0 through $m9 at parse time. This feature gives regex much of the power of cut(1), paste(1), and grep(1), and
some of the capabilities of sed(1). If there is no template, the default is $m0$m1$m2$m3$m4$m5$m6$m7$m8$m9.
OPTIONS
The following options are supported:
-e Evaluates the corresponding template and writes the result to the standard output.
-v "string" Uses string instead of the standard input to match against patterns.
EXAMPLES
Example 1: Cutting letters out of a string
To cut the 4th through 8th letters out of a string (this example will output strin and return TRUE):
`regex -v "my string is nice" '^.{3}(.{5})$0' '$m0'`
Example 2: Validating input in a form
In a form, to validate input to field 5 as an integer:
valid=`regex -v "$F5" '^[0-9]+$'`
Example 3: Translating an environment variable in a form
In a form, to translate an environment variable which contains one of the numbers 1, 2, 3, 4, 5 to the letters a, b, c, d, e:
value=`regex -v "$VAR1" 1 a 2 b 3 c 4 d 5 e '.*' 'Error'`
Note the use of the pattern '.*' to mean "anything else".
Example 4: Using backquoted expressions
In the example below, all three lines constitute a single backquoted expression. This expression, by itself, could be put in a menu defini-
tion file. Since backquoted expressions are expanded as they are parsed, and output from a backquoted expression (the cat command, in this
example) becomes part of the definition file being parsed, this expression would read /etc/passwd and make a dynamic menu of all the login
ids on the system.
`cat /etc/passwd | regex '^([^:]*)$0.*$' '
name=$m0
action=`message "$m0 is a user"`'`
DIAGNOSTICS
If none of the patterns match, regex returns FALSE, otherwise TRUE.
NOTES
Patterns and templates must often be enclosed in single quotes to turn off the special meanings of characters. Especially if you use the
$m0 through $m9 variables in the template, since FMLI will expand the variables (usually to "") before regex even sees them.
Single characters in character classes (inside []) must be listed before character ranges, otherwise they will not be recognized. For exam-
ple, [a-zA-Z_/] will not find underscores (_) or slashes (/), but [_/a-zA-Z] will.
The regular expressions accepted by regcmp differ slightly from other utilities (that is, sed, grep, awk, ed, and so forth).
regex with the -e option forces subsequent commands to be ignored. In other words, if a backquoted statement appears as follows:
`regex -e ...; command1; command2`
command1 and command2 would never be executed. However, dividing the expression into two:
`regex -e ...``command1; command2`
would yield the desired result.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWcsu |
+-----------------------------+-----------------------------+
SEE ALSO awk(1), cut(1), grep(1), paste(1), sed(1), regcmp(3C), attributes(5)SunOS 5.10 12 Jul 1999 regex(1F)