Substitution using SED Post: 302256943

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Substitution using sed

I know we can substitute a string using sed but how? For example: sed 's/(old variable)/(new variable)/ details.dat Am I suppose to put $old variable or whatever? Because I tried many times, it didnt work by putting $old variable. Am I suppose to enclose it with "" or ''? Please help

2. UNIX for Dummies Questions & Answers

sed substitution

Hi, I have a set of files containing strings like I.TEST1_TEST2 or B.ESSA_ESSB for example. Does somebody know how to substitute these strings whith the same name and an extension "_V1" (ie. I.TEST1_TEST2_V1) using sed command or else ?

3. Shell Programming and Scripting

SED Substitution

Hi , I am stuck up in the below scenario:- I need to read a file name (eg A.txt) name frm another file (eg B.txt) and then I need to search for a particular expression in A.txt and substitute it with another expression. How can I use SED inside SHELL Scripting and command prompt as well to...

4. Shell Programming and Scripting

SED Substitution

Hi guys, Can u please help me to replace (-) with (/) in a file containing no of records using "sed " command in unix. thanks in advance. subhendu

5. Shell Programming and Scripting

sed substitution

Hi I am trying to do a text insertion in a text file at a particular line number in a shell script. However its not working. sed '122i\ > for j in \`echo $MyList\` ; do perl -pi -e\'s#01\/01\/2009#01\/01\/2011#\' $j ; done' $HOME/MyScript.ksh The Actual line to be inserted at line 122...

6. UNIX for Dummies Questions & Answers

Help with sed substitution

I'm a noob to unix, and I have a line of data like the following: title=Boston|tcolor=green|desc=Large city in New England|url=www.boston.com Is there a way to change a field value with sed substitution? (i.e. change tcolor=green to tcolor=blue) I figured out: sed...

7. Shell Programming and Scripting

Substitution with sed

I have a file with some numbers having single quotes around them which I want to remove. i.e. '923930' -> 23930 If it can be done without using sed thats fine. I have tried with sed but can't think how to replace this pattern on only the numbers

8. Shell Programming and Scripting

sed substitution

Hello, I have two files. File1 is normal txt file and File2 contains list of line numbers. e.g. File2: 3 6 9 ..... I need to replace a character in File1 in lines (taken from File2). For that I am using a "for" loop: for i in $(cat File2) do sed "$i s/Y/N/" File1 done but my...

9. UNIX for Dummies Questions & Answers

sed substitution

How can you use sed with a line of code that reads: 67899:Bill:Williams:Maple Dr.:45908600 Let us say we want to replace Maple Dr. with Oak St.

10. Shell Programming and Scripting

sed substitution

Hi everyone, I need very simple sed command to change a parameter in a text file. I have a line in this text which is like set xx 0.5 A program reads this file and does some algebraic calculations. So to make a parameter scan I need to change the value of xx. I thought I can do...

LEARN ABOUT PHP

boolval

BOOLVAL(3)								 1								BOOLVAL(3)

boolval - Get the boolean value of a variable

SYNOPSIS

       boolean boolval (mixed  $var)

DESCRIPTION

	Returns the boolean value of $var.

PARAMETERS

	      o $var
		- The scalar value being converted to a boolean.

RETURN VALUES

	The boolean value of $var.

EXAMPLES

       Example #1

	      boolval(3) examples

	      <?php
	      echo '0:	      '.(boolval(0) ? 'true' : 'false')."
";
	      echo '42:       '.(boolval(42) ? 'true' : 'false')."
";
	      echo '0.0:      '.(boolval(0.0) ? 'true' : 'false')."
";
	      echo '4.2:      '.(boolval(4.2) ? 'true' : 'false')."
";
	      echo '"":       '.(boolval("") ? 'true' : 'false')."
";
	      echo '"string": '.(boolval("string") ? 'true' : 'false')."
";
	      echo '"0":      '.(boolval("0") ? 'true' : 'false')."
";
	      echo '"1":      '.(boolval("1") ? 'true' : 'false')."
";
	      echo '[1, 2]:   '.(boolval([1, 2]) ? 'true' : 'false')."
";
	      echo '[]:       '.(boolval([]) ? 'true' : 'false')."
";
	      echo 'stdClass: '.(boolval(new stdClass) ? 'true' : 'false')."
";
	      ?>

	      The above example will output:

	      0:	false
	      42:	true
	      0.0:	false
	      4.2:	true
	      "":	false
	      "string": true
	      "0":	false
	      "1":	true
	      [1, 2]:	true
	      []:	false
	      stdClass: true

SEE ALSO

       floatval(3), intval(3), strval(3), settype(3), is_bool(3), Type juggling.

PHP Documentation Group 														BOOLVAL(3)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers