file1.txt :
india pakistan bangladesh
japan canada africa
USA srilanka Nepal
file2.txt
Delhi
Tokyo
washington
I have to cut the first column of file1.txt and apend it with file2.txt as another column like this
Delhi india
Tokyo japan
washington USA
... (4 Replies)
I'm having problems since few days ago, and i'm not able to make it works with a simple awk+grep script (or other way to do this).
For example, i have a input file1.txt:
cat inputfile1.txt
218299910417
1172051195
1172070231
1172073514
1183135117
1183135118
1183135119
1281440202
... (3 Replies)
Col1 Col2 Col3 Col4
12 Completed 08 0830
12 In Progress 09 0829
11 For F U 07 0828
Considering the file above, how could i replace the third column the most efficient way? The actual file size is almost 1G. I am... (10 Replies)
Hi,
Somebody please assist me in updating the data from one file to the other in Shell Scripting.
There are two files file1 and file2. Both the files have differen data but a common attribute. e.g. JAVA_HOME.
e.g. file1 has JAVA_HOME=/usr/j2se and
file2 has... (3 Replies)
hi every one i want to read and write data from cvs file using c program. but my problem is that at run time my data is increasing in both row wise and column wise. that means it is continuously updating in both direction.
is there any way through which i can find the next colum or row for eg... (0 Replies)
Hi,
Can anyone please tell me about how we can delete an entire column from a tab delimited file?
Mu input_file.txt looks like this:
And I want the output as:
I used the below code
nawk -v d="1" 'BEGIN{FS=OFS="\t"}{$d=""}{print}' input_file.txtBut in the output, the first column is... (5 Replies)
I have a csv that looks like this:
,yude-to-nap2,0,0,0,0,0
,2twis-yude-to-nap2,0,0,0,0,0
,2tiws-yude-to-nap2,0,0,0,0,0
,2arcos-yude-to-nap2,0,0,0,0,0
and another file named m1 that has a single line of text as content:
Feb 1 15:30:20
How can I fill the whole the empty column of the... (1 Reply)
I have one requirement to delete all lines from a file if it matches below scenario. File contains three column. Employee Number, Employee Name and Employee ID
Scenario is: delete all line if Employee Number (1st column) contains below
1. Non-numeric Employee Number
2. Employee Number that... (3 Replies)
I have a file with class c IP addresses that I need to match to a column and print the matching lines of another file.
I started playing with grep -if file01.out file02.out but I am stuck as to how to match it to a column and print the matching lines;
cat file01.out
10.150.140... (5 Replies)
Discussion started by: lewk
5 Replies
LEARN ABOUT PHP
eval
EVAL(3) 1 EVAL(3)eval - Evaluate a string as PHP codeSYNOPSIS
mixed eval (string $code)
DESCRIPTION
Evaluates the given $code as PHP.
Caution
The eval(3) language construct is very dangerous because it allows execution of arbitrary PHP code. Its use thus is discouraged.
If you have carefully verified that there is no other option than to use this construct, pay special attention not to pass any user
provided data into it without properly validating it beforehand.
PARAMETERS
o $code
- Valid PHP code to be evaluated. The code mustn't be wrapped in opening and closing PHP tags, i.e. 'echo "Hi!";' must be passed
instead of '<? echo "Hi!"; >'. It is still possible to leave and reenter PHP mode though using the appropriate PHP tags, e.g.
'echo "In PHP mode!"; ?>In HTML mode!<? echo "Back in PHP mode!";'. Apart from that the passed code must be valid PHP. This
includes that all statements must be properly terminated using a semicolon. 'echo "Hi!"' for example will cause a parse error,
whereas 'echo "Hi!";' will work. A return statement will immediately terminate the evaluation of the code. The code will be exe-
cuted in the scope of the code calling eval(3). Thus any variables defined or changed in the eval(3) call will remain visible
after it terminates.
RETURN VALUES eval(3) returns NULL unless return is called in the evaluated code, in which case the value passed to return is returned. If there is a
parse error in the evaluated code, eval(3) returns FALSE and execution of the following code continues normally. It is not possible to
catch a parse error in eval(3) using set_error_handler(3).
EXAMPLES
Example #1
eval(3) example - simple text merge
<?php
$string = 'cup';
$name = 'coffee';
$str = 'This is a $string with my $name in it.';
echo $str. "
";
eval("$str = "$str";");
echo $str. "
";
?>
The above example will output:
This is a $string with my $name in it.
This is a cup with my coffee in it.
NOTES
Note
Because this is a language construct and not a function, it cannot be called using variable functions.
Tip
As with anything that outputs its result directly to the browser, the output-control functions can be used to capture the output of
this function, and save it in a string (for example).
Note
In case of a fatal error in the evaluated code, the whole script exits.
SEE ALSO call_user_func(3).
PHP Documentation Group EVAL(3)