In a shell script, how I can achieve substitution of shell script var to a regular
expression, as shown below.
var=`head -1 file1`
awk '$0!~/$var/ {print $0}' file1 > file2
In the case above $var value literally considered for non-exists criteria. (3 Replies)
Hello!
I've got txt-file containing lots of data in sentences like this:
;;BA;00:00:03:00;COM;CLOQUET-LAFOLLYE;SIMON;
but sometime more than on in a line like this:
;;BA;00:00:03:00;COM;CLOQUET-LAFOLLYE;SIMON;;;BA;00:00:03:00;REA;RTL9;;;;BAC;:00;TIT;SEMAINE SPECIALE ~SSLOGAN~T DVD;;
... (3 Replies)
Hi there!
I'm trying to validate a simple 6 digits number with reg expr. I ONLY want 6 digits so when i type 7 digits the script should no validate the number.
I've write this code:
#!/usr/bin/perl
while(<STDIN>){
if($_=~/\d{6}/){
print "Bingo!\n";
... (2 Replies)
Hi all,
I want to cut a column which match the regular expression "beta", if I don't know the column number?
cat test
alpha;beta;gamma
11;22;33
44;55;66
77;88;99
should be
command ....
beta
22
55 (6 Replies)
Hi All,
I need your input on how to mask out / ignore a string that does not match a working regular expression (continually refining) pattern in Java. Below is the code snippet which is picking up all the lines with the correct regular expression string except one known so far:
public... (0 Replies)
I am trying to check if files staring with filename but ending with diffent dates e.g. filename.2011-10-25.
The code I am using is below
if
It works find only if one file is present but returns binary operator expected
when there are mulptiple files.
Please help me correcting it. I... (5 Replies)
Hi all,
I need to do scrip for printing starting and ending numbers along with count in given file.:wall:
Input: a.txt
10000030
10000029
10000028
10000027
10000026
10000024
10000023
10000021
10000018
10000018
10000017
10000016
10000015
10000014 (2 Replies)
Hello,
Here is my text data excerpted from the webpage:
input
My target is to get:
What i tried is:
sed 's/.*\(connector\)/1/' input > output
but all characters coming before the word "connector" are deleted which is not good for me.
My question: (9 Replies)
im trying to search for a WORD in a file which
begins with a number
followed by a hypen
follwed multiple words
and end with a dot "."
and pront the entire line which matches the above.
Please note that there is a space at the begining of each line
i/p file
19458 00000-CONTROL-PARA.... (5 Replies)
Discussion started by: anijan
5 Replies
LEARN ABOUT OPENSOLARIS
switch
switch(1T) Tcl Built-In Commands switch(1T)__________________________________________________________________________________________________________________________________________________NAME
switch - Evaluate one of several scripts, depending on a given value
SYNOPSIS
switch ?options? string pattern body ?pattern body ...?
switch ?options? string {pattern body ?pattern body ...?}
_________________________________________________________________DESCRIPTION
The switch command matches its string argument against each of the pattern arguments in order. As soon as it finds a pattern that matches
string it evaluates the following body argument by passing it recursively to the Tcl interpreter and returns the result of that evaluation.
If the last pattern argument is default then it matches anything. If no pattern argument matches string and no default is given, then the
switch command returns an empty string.
If the initial arguments to switch start with - then they are treated as options. The following options are currently supported:
-exact Use exact matching when comparing string to a pattern. This is the default.
-glob When matching string to the patterns, use glob-style matching (i.e. the same as implemented by the string match command).
-regexp When matching string to the patterns, use regular expression matching (as described in the re_syntax reference page).
-- Marks the end of options. The argument following this one will be treated as string even if it starts with a -.
Two syntaxes are provided for the pattern and body arguments. The first uses a separate argument for each of the patterns and commands;
this form is convenient if substitutions are desired on some of the patterns or commands. The second form places all of the patterns and
commands together into a single argument; the argument must have proper list structure, with the elements of the list being the patterns
and commands. The second form makes it easy to construct multi-line switch commands, since the braces around the whole list make it unnec-
essary to include a backslash at the end of each line. Since the pattern arguments are in braces in the second form, no command or vari-
able substitutions are performed on them; this makes the behavior of the second form different than the first form in some cases.
If a body is specified as ``-'' it means that the body for the next pattern should also be used as the body for this pattern (if the next
pattern also has a body of ``-'' then the body after that is used, and so on). This feature makes it possible to share a single body among
several patterns.
Beware of how you place comments in switch commands. Comments should only be placed inside the execution body of one of the patterns, and
not intermingled with the patterns.
EXAMPLES
The switch command can match against variables and not just literals, as shown here (the result is 2):
set foo "abc"
switch abc a - b {expr 1} $foo {expr 2} default {expr 3}
Using glob matching and the fall-through body is an alternative to writing regular expressions with alternations, as can be seen here (this
returns 1):
switch -glob aaab {
a*b -
b {expr 1}
a* {expr 2}
default {expr 3}
}
Whenever nothing matches, the default clause (which must be last) is taken. This example has a result of 3:
switch xyz {
a -
b {
# Correct Comment Placement
expr 1
}
c {
expr 2
}
default {
expr 3
}
}
SEE ALSO for(1T), if(1T), regexp(1T)KEYWORDS
switch, match, regular expression
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+--------------------+-----------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+--------------------+-----------------+
|Availability | SUNWTcl |
+--------------------+-----------------+
|Interface Stability | Uncommitted |
+--------------------+-----------------+
NOTES
Source for Tcl is available on http://opensolaris.org.
Tcl 7.0 switch(1T)