Yes, but exactly how depends on a few things. Is this string a part of a record contained in a file, and thus you want to replace all of these strings with just the last two chracters? Or, is this string in a ksh or bash script variable, and you'd like to truncate the string.
If it's the latter (you have the value in a script variable), there are better ways than using sed. For instance:
If you have a file, then the syntax of each record of the file needs to be known in order to craft a sed programme that will do the work.
Hello,
I need to delete the final few characters from a parameter leaving just the first few. However, the characters which need to remain will not always be a string of the same length.
For instance, the parameter will be passed as BN_HSBC_NTRS/hub_mth_ifce.sf. I only need the bit before the... (2 Replies)
hyper link- abc:8081/xyz/2.5.6/rtyp-2.5.6.jar
Needs to get "rtyp-2.5.6.jar" i.e character after last backslash "/"
how to do this using sed/awk??
help is highly appreciated. (7 Replies)
Hi Please help me to refine my syntax. I want to delete the excess characters from the out put below.
-bash-3.00$ top -b -n2 -d 00.20 |grep Cpu|tail -1 | awk -F ":" '{ print $2 }' | cut -d, -f1
4.4% us
now i want to delete the % and us. How wil i do that to make it just 4.4.
Thanks (7 Replies)
Hi,
I have a xml file (Config.xml)
<Header name="" TDate="" PDate="">
<Config>
{"config" { "Nation" "Pri:|Sec:"}}
</Config>
</Header>
Now I wanted to printed all the strings between "". I tried the following
cat Config.xml | sed -n 's/.*\.*//p'
... (8 Replies)
Hi all.. I have several unique files that contain one thing in common, and that is acct#. For all files in the directory, I want to append the 10 characters following the word "ACCOUNT:" to the end of the filename.
for example:
I have file 111_123 that contains ACCOUNT:ABC1234567
The file... (5 Replies)
Hello All
I have a file like this
abc.tpt.ctl
bdc.tpt.ctl
cdw.tpt.ctl
I have looped every line using the for Loop, now I want to take each line and cut the .tpt.ctl part of it and store it in a variable and use the variable in same loop.
The part I am stuck at is how do I cut the last... (9 Replies)
Hello All,
I have to write a shell logic inside my ANT Script , the data from my ANT is in the string like
string a = "test1.props,test2.props,*,test3.props,?,test4,props"
how do i remove this wild card characters from my string a and assign them to an other string , like i only want to... (9 Replies)
Hi,
I hope you can help me out please?
I need to replace from character 8-16 with AAAAAAAA and the rest should stay the same after character 16
gtwrhtrd11111111rjytwyejtyjejetjyetgeaEHT
wrehrhw22222222hytekutkyukrylryilruilrGEQTH
hrwjyety33333333gtrhwrjrgkreglqeriugn;RUGNEURGU
... (4 Replies)
I have this fastq file:
@M04961:22:000000000-B5VGJ:1:1101:9280:7106 1:N:0:86
GGGGGGGGGGGGCATGAAAACATACAAACCGTCTTTCCAGAAATTGTTCCAAGTATCGGCAACAGCTTTATCAATACCATGAAAAATATCAACCACACCA
+test-1
GGGGGGGGGGGGGGGGGCCGGGGGFF,EDFFGEDFG,@DGGCGGEGGG7DCGGGF68CGFFFGGGG@CGDGFFDFEFEFF:30CGAFFDFEFF8CAF;;8... (10 Replies)
Discussion started by: Xterra
10 Replies
LEARN ABOUT PLAN9
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)