hi,
I am a begginer in unix and i want to know how to open a file and read it and separate the numbers & words and storing it in separate files, Using shell scripting.
Please help me out for this.
Regards
S.Kamakshi (2 Replies)
Hi All,
I want to read one number from the file.
Only one number will be there in the file.
then i have to increment the number in my script and put it back in the same file.
Is it possible?
Can anybody help me?
Thanks,
Vinay (6 Replies)
Hi Guys,
I am new to unix.
Actually i want help in writing an single command where
i can actually read specific line number in file where the line number will be passed to command as parameter.
ex.
1 a
2 b
3 c
4 d
And to my command i pass as 2.
so i should get output as 2 b
... (15 Replies)
I have a file with a list of config files numbered on the lefthand side 1-300. I need to have bash read each lines number and assign it to a variable so it can be chosen by the user called by the script later.
Ex. 1 some data
2 something else
3 more stuff
which number do you... (1 Reply)
Hello, I'm trying to create a BASH file that can read all the files in my working directory and tell me how many words and lines are in that file. I wrote the following code:
FILES="*"
for f in "$FILES"
do
echo -e `wc -l -w $f`
done
My issue is that my file is outputting in one... (4 Replies)
Hello Everyone.
I am trying to display contains of a file from a specific line to a specific line(let say, from line number 3 to line number 5). For this I got the shell script as shown below:
if ; then
if ; then
tail +$1 $3 | head -n $2
else
... (5 Replies)
Hello All,
i am a newbie and need some help when reading a csv file in a bourne shell script. I want to read 10 lines, then wait for a minute and then do a reading of another 10 lines and so on in the same way. I want to do this till the end of file.
Any inputs are appreciated
... (3 Replies)
Hi all,
I have a file sample.txt
abc
asd
adf
daf
adw
add
adv
wdf
I want to control the number of lines to read
Like if i give input as ./script_name 2 5
required output
asd
adf
daf (2 Replies)
hello guys,
I'm struggled to get a number from a very long text file.
NAtoms= 33 NActive= 30 NUniq= 23 SFac= 1.00D+00 NAtFMM= 60 NAOKFM=F Big=F
Integral buffers will be 131072 words long.
Raffenetti 2 integral format.
The number 33 is what I wanted, always follows NAtoms=... (5 Replies)
I am new to ksh scripts. I would like to be able to read a file line by line from a certain line number. I have a specific line number saved in a variable, say $lineNumber. How can I start reading the file from the line number saved in $lineNumber? Thanks! (4 Replies)
Discussion started by: dcowboys13
4 Replies
LEARN ABOUT PHP
readline_callback_handler_install
READLINE_CALLBACK_HANDLER_INSTALL(3) 1 READLINE_CALLBACK_HANDLER_INSTALL(3)readline_callback_handler_install - Initializes the readline callback interface and terminal, prints the prompt and returns immediatelySYNOPSIS
bool readline_callback_handler_install (string $prompt, callable $callback)
DESCRIPTION
Sets up a readline callback interface then prints $prompt and immediately returns. Calling this function twice without removing the previ-
ous callback interface will automatically and conveniently overwrite the old interface.
The callback feature is useful when combined with stream_select(3) as it allows interleaving of IO and user input, unlike readline(3).
PARAMETERS
o $prompt
- The prompt message.
o $callback
- The $callback function takes one parameter; the user input returned.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
Example #1
Readline Callback Interface Example
<?php
function rl_callback($ret)
{
global $c, $prompting;
echo "You entered: $ret
";
$c++;
if ($c > 10) {
$prompting = false;
readline_callback_handler_remove();
} else {
readline_callback_handler_install("[$c] Enter something: ", 'rl_callback');
}
}
$c = 1;
$prompting = true;
readline_callback_handler_install("[$c] Enter something: ", 'rl_callback');
while ($prompting) {
$w = NULL;
$e = NULL;
$n = stream_select($r = array(STDIN), $w, $e, null);
if ($n && in_array(STDIN, $r)) {
// read a character, will call the callback when a newline is entered
readline_callback_read_char();
}
}
echo "Prompting disabled. All done.
";
?>
readline_callback_handler_remove(3), readline_callback_read_char(3), stream_select(3).
PHP Documentation Group READLINE_CALLBACK_HANDLER_INSTALL(3)