hi,
I have a variable var1 as follows in the script.
var1="one two three desformat=PDF xyz"
I would like to check whether $var1 has a string "desformat=PDF" or not.
Is there any command I can use (not need to creat a file)?
Currently, I am using this:
if ( grep "desformat=PDF"... (1 Reply)
Hello All,
Plz help me with:
I have a csv file with data separated by ',' and optionally enclosed by "". I want to check each of these values to see if they exceed the specified string length, and if they do I want to cut just that value to the max length allowed and keep the csv format as it... (9 Replies)
Hi,
I have a string variable containing value say
abc123
I want to check if the 3rd element of this string is "c"
in a if statement.Actually i dont know the syntax of how to use substring
in an if statement in shell script.
Please reply soon.
Regards
Navjot (3 Replies)
hi to all,
i want to check the value of a variable that it contains characters.
for example i try the following:
if then .........
i just want to check that in the specific line that is a variable called "passline" has the entry "password". But it can contain also other characters in the... (4 Replies)
Can someone tell me how I can do this?
e.g:
a=$(echo -e wert trewt ertert ertert ertert erttert
erterte
rterter
tertertert
ert)
How do i replace the STRING with $a?
I try this:
sed -i 's/STRING/'"$a"'/g' filename.ext
but this don' t work (2 Replies)
Hi All,
I am trying to to compare a string variable with a string literal inside a loop but keep getting the
./testifstructure.sh: line 6:
#!/bin/sh
BOOK_LIST="BOOK1 BOOK2"
for BOOK in ${BOOK_LIST}
do
if
then echo '1'
else
echo '2'
fi
done
Please use next... (1 Reply)
hello,
i have a variable which should have following content :
var="value1"
or
var="value2"
or
var="value2:*" # example: value2:22
how can i check :
- if the content is ok (value1 / value2* )
- the two options of "value2"
when content is example "value2:22" , i want to split... (3 Replies)
I want to append file with a string but before doing that i want to check if this string already exist in that file.I tried with grep on Solaris 10 but unsuccessful.Man pages from grep seems to suggest if the string is found command status will be 0 and if not 1.But i am not finding it.May be i... (2 Replies)
Below is my ksh shell script where I need to check if variable fileprops is a subset of $1 argument.
echo "FILE PROPERTY: $fileprops"
echo "PARAMETER3: $1"
if ; then
echo "We are Good. $line FILE is found to be INTACT !! "
else
echo... (2 Replies)
Discussion started by: mohtashims
2 Replies
LEARN ABOUT DEBIAN
text::trim
Text::Trim(3pm) User Contributed Perl Documentation Text::Trim(3pm)NAME
Text::Trim - remove leading and/or trailing whitespace from strings
VERSION
version 1.02
SYNOPSIS
use Text::Trim;
$text = " important data
";
$data = trim $text;
# now $data contains "important data" and $text is unchanged
# or:
trim $text; # work in-place, $text now contains "important data"
@lines = <STDIN>;
rtrim @lines; # remove trailing whitespace from all lines
# Alternatively:
@lines = rtrim <STDIN>;
# Or even:
while (<STDIN>) {
trim; # Change $_ in place
# ...
}
DESCRIPTION
This module provides functions for removing leading and/or trailing whitespace from strings. It is basically a wrapper around some simple
regexes with a flexible context-based interface.
EXPORTS
All functions are exported by default.
CONTEXT HANDLING
void context
Functions called in void context change their arguments in-place
trim(@strings); # All strings in @strings are trimmed in-place
ltrim($text); # remove leading whitespace on $text
rtrim; # remove trailing whitespace on $_
No changes are made to arguments in non-void contexts.
list context
Values passed in are changed and returned without affecting the originals.
@result = trim(@strings); # @strings is unchanged
@result = rtrim; # @result contains rtrimmed $_
($result) = ltrim(@strings); # like $result = ltrim($strings[0]);
scalar context
As list context but multiple arguments are stringified before being returned. Single arguments are unaffected. This means that under
these circumstances, the value of $" ($LIST_SEPARATOR) is used to join the values. If you don't want this, make sure you only use single
arguments when calling in scalar context.
@strings = (" hello
", " there
");
$trimmed = trim(@strings);
# $trimmed = "hello there"
local $" = ', ';
$trimmed = trim(@strings);
# Now $trimmed = "hello, there"
$trimmed = rtrim;
# $trimmed = $_ minus trailing whitespace
Undefined values
If any of the functions are called with undefined values, the behaviour is in general to pass them through unchanged. When stringifying a
list (calling in scalar context with multiple arguments) undefined elements are excluded, but if all elements are undefined then the return
value is also undefined.
$foo = trim(undef); # $foo is undefined
$foo = trim(undef, undef); # $foo is undefined
@foo = trim(undef, undef); # @foo contains 2 undefined values
trim(@foo) # @foo still contains 2 undefined values
$foo = trim('', undef); # $foo is ''
FUNCTIONS
trim
Removes leading and trailing whitespace from all arguments, or $_ if none are provided.
rtrim
Like trim() but removes only trailing (right) whitespace.
ltrim
Like trim() but removes only leading (left) whitespace.
UNICODE
Because this module is implemented using perl regular expressions, it is capable of recognising and removing unicode whitespace characters
(such as non-breaking spaces) from scalars with the utf8 flag on. See Encode for details about the utf8 flag.
Note that this only applies in the case of perl versions after 5.8.0 or so.
SEE ALSO
Brent B. Powers' String::Strip performs a similar function in XS.
AUTHOR
Matt Lawrence <mattlaw@cpan.org>
ACKNOWLEDGEMENTS
Terrence Brannon <metaperl@gmail.com> for bringing my attention to String::Strip and suggesting documentation changes.
perl v5.10.1 2010-06-07 Text::Trim(3pm)