+ ~/tmp $ cat ./leolson
while read line
do
len=${#line} ; [ $len -gt 3 ] && len=$(( $len - 3))
tmp="$(printf '%*s' $len|sed s,\ ,*,g)"
echo "${line:0:3}${tmp}"
done<file1
+ ~/tmp $ time bash ./leolson
aba*****
cdc*******
efe******
a*b****
real 0m0.007s
user 0m0.003s
sys 0m0.006s
I did a few runs, and felt tendency is more around 6-11 than 12+.
(had more 0.006 + 0.007 than everything else together)
Though, with MadeInGermany's 0.010 sec awk code i get 0.001
Code:
time awk '{x=substr($0,N+1); gsub(".","*",x); print substr($0,1,N) x}' N=3 file1 > /dev/null
real 0m0.001s
user 0m0.000s
sys 0m0.001s
And your perl code behaves quite irrrational:
Code:
+ ~/tmp $ time perl -pe 's/(?<=...)./*/g' file1 >/dev/null
real 0m0.119s
user 0m0.003s
sys 0m0.002s
+ ~/tmp $ time perl -pe 's/(?<=...)./*/g' file1 >/dev/null
real 0m0.006s
user 0m0.002s
sys 0m0.004s
I find the time diffrence quite immmense and confusing.
Sure, some mili-secs diffrence can happen - but by factor 19.8:1?
How can I use sed to replace a ctrl character such as 'new line' (\0a) to something else? Or any other good command can do this job?
Thanks,
Hillxy (5 Replies)
Hi all,
Suppose I have a file with the contents below, and I only want to print words %S_ then | sort -u.
------------------------------
The %S_MSG that starts with '%.*s' is too long. Maximum length is %d.
The %S_MSG name '%.*s' contains more than the maximum number of prefixes. The... (5 Replies)
Hi everyone
I have file1 contains:
'7832'
' 8765
6543
I want a sed command that will format as:
'7832' , '8765' , '6543'
I tried
sed -e s/\'//g -e 's/^*//;s/*$//' file1 > file2
sed -e :a -e '$!N; s/\n/ /; ta' file2
which gives: 7832 8765 6543
I need some help to continue with... (5 Replies)
Hi,
I require to replace 2 items:
1. replace start of all lines in a file with ' except the first line
2. replace end of all lines in a file with '||chr( except last line
I am able to do the entire file using
sed -e s/^/\'/g -e s/$/\'\|\|chr\(/g "$file" > newfile.txt
but am not yet able... (0 Replies)
Hi,
I require to replace 2 items:
1. replace start of all lines in a file with ' except the first line
2. replace end of all lines in a file with '||chr( except last line
I am able to do the entire file using
sed -e s/^/\'/g -e s/$/\'\|\|chr\(/g "$file" > newfile.txt
but am not yet... (3 Replies)
Hi,
I'm trying to replace a range of characters by their position in each line by spaces.
I need to replace characters 95 to 145 by spaces in each line.
i tried below but it doesn't work
sed -r "s/^(.{94})(.{51})/\ /" inputfile.txt > outputfile.txt
can someone please help me... (3 Replies)
I have several files in a directory that look like this:
jacket-n r
potential-n -
outcome-n f
reputation-n b
I want to replace the characters in the second column with certain numbers. For instance, I want the letters 'f', 'r' and 'b' in the second column to replaced with 0 and I want the... (1 Reply)
Hi,
I hope you can help me out please?
I need to replace from character 8-16 with AAAAAAAA and the rest should stay the same after character 16
gtwrhtrd11111111rjytwyejtyjejetjyetgeaEHT
wrehrhw22222222hytekutkyukrylryilruilrGEQTH
hrwjyety33333333gtrhwrjrgkreglqeriugn;RUGNEURGU
... (4 Replies)
Hello,
I have some data that looks like the following,
> <SALTDATA> (OVS0199262)
HCl
> <IDNUMBER> (OVS0199262)
OVS0199262
> <SUPPLIER> (OVS0199262)
TimTec
> <EMAIL> (OVS0199262)
info@timtec.net
> <WEBSITE> (OVS0199262)
http://www.timtec.net
I need to remove the data in... (3 Replies)
Hi,
Im using sed on an AIX machine. I am trying to change the 137-139 characters if they are a ' 36'/'000' to a '036'. The positions that need to be changed are fixed.
the source data that I have is$cat v.txt
4000422985400050462239065593606500000007422985707771046154054910075641MC0318AMWAY... (9 Replies)
Discussion started by: dsid
9 Replies
LEARN ABOUT PHP
ibase_blob_get
IBASE_BLOB_GET(3) 1 IBASE_BLOB_GET(3)ibase_blob_get - Get len bytes data from open blobSYNOPSIS
string ibase_blob_get (resource $blob_handle, int $len)
DESCRIPTION
This function returns at most $len bytes from a BLOB that has been opened for reading by ibase_blob_open(3).
Note
It is not possible to read from a BLOB that has been opened for writing by ibase_blob_create(3).
PARAMETERS
o $blob_handle
- A BLOB handle opened with ibase_blob_open(3).
o $len
- Size of returned data.
RETURN VALUES
Returns at most $len bytes from the BLOB, or FALSE on failure.
EXAMPLES
Example #1
ibase_blob_get(3) example
<?php
$result = ibase_query("SELECT blob_value FROM table");
$data = ibase_fetch_object($result);
$blob_data = ibase_blob_info($data->BLOB_VALUE);
$blob_hndl = ibase_blob_open($data->BLOB_VALUE);
echo ibase_blob_get($blob_hndl, $blob_data[0]);
?>
Whilst this example doesn't do much more than a 'ibase_blob_echo($data->BLOB_VALUE)' would do, it does show you how to get information
into a $variable to manipulate as you please.
SEE ALSO ibase_blob_open(3), ibase_blob_close(3), ibase_blob_echo(3).
PHP Documentation Group IBASE_BLOB_GET(3)
02-12-2015
