Thank you apmcd47 for your helpful reply. I've managed to get the following code working to identify what I need:
Code:
[ -f /var/chef/cache/cookbooks/bootstrap_cookbooks_version_* ] && echo /var/chef/cache/cookbooks/bootstrap_cookbooks_version_* | sed 's/.*version_//'
But what could I add to this code to report that no file was found if a bootstrap_cookbooks_version_* file does not exist?
Thank you.
If you use my second example you could just add a second echo thus:
Code:
f=$(echo/var/chef/cache/cookbooks/bootstrap_cookbooks_version_*) && [ -f "$f" ] && echo ${f##*_} || echo "file does not exist"
In this case the string file does not exist is printed instead of the word red or green. Alternatively look into turning that echo into the instruction you actually want:
Code:
f=$(echo/var/chef/cache/cookbooks/bootstrap_cookbooks_version_*) && [ -f "$f" ] && cat > my_file_is_${f##*_}.txt <<EOT
this will go into the file my_file_is_red.txt
or the file my_file_is_green.txt
only if the file bootstrap_cookbooks_version_red
(or ..._green) exist!
EOT
The purpose of those comands are to find the newest file in a directory acvrdind to system date, and it has to be recursively found in each directory.
The problem is that i want to list in a long format every found file, but the commands i use produce unexpected results ,so the output lists in a... (5 Replies)
I have the following statement in script:
find ${LANDING_FILE_DIR}${BTIME_FILENAME_PATTERN2} -print | while read file; do
...
done
When there are no files located by the find comand it returns:
"find: bad status-- /home/rnitcher/test/....." to the command line
How do I get control in... (3 Replies)
I want the output of the find command to be printed and also the total files found by it. Can someone help in this.
Obviously $ find . -type f | wc -l will not output the files found but only the count. I want both. There can be millions and trillions of files so dont want the output of find... (3 Replies)
Hi,
i'm currently writing a script which tidys up old files. When using the find command I found that some files were not being listed
/export/home/ops***/test: ls -l processed
total 0
-rw-rw-r-- 1 ops*** ****** 0 Apr 20 11:53 test99
/export/home/ops***/test: ls -l
total 4... (9 Replies)
Trying to locate files less than xx days old, throughout all directories/subdirectories, but excluding certain types of directories and files.
The directories I want to search all contain the same characteristic (dbdef, pldef, ghdef, etc), and there are subdirectories within that I need to... (2 Replies)
Hi, I am new in scripting, and I am currently working on a script that will look for other files in a certain directory and exclude some file type.
this works fine:Find_File2Exclude=`find ${paths} -maxdepth 1 -type f \( ! -iname '*.out' ! -iname '*.auc' ! -iname '*.cps' ! -iname '*.log' ! -iname... (4 Replies)
Hello Forum,
I'm using the following command to find all inactive kernels installed on my RHEL server:
$ rpm -qa | grep '^kernel-' |grep -vE `uname -r`
but the result is in two lines:
kernel-3.10.0-1062.1.1.el7.x86_64
kernel-3.10.0-1062.el7.x86_64
Is there a one line command I can... (3 Replies)
Discussion started by: greavette
3 Replies
LEARN ABOUT PHP
substr_replace
SUBSTR_REPLACE(3) 1 SUBSTR_REPLACE(3)substr_replace - Replace text within a portion of a stringSYNOPSIS
mixed substr_replace (mixed $string, mixed $replacement, mixed $start, [mixed $length])
DESCRIPTION substr_replace(3) replaces a copy of $string delimited by the $start and (optionally) $length parameters with the string given in $replace-
ment.
PARAMETERS
o $string
- The input string. An array of strings can be provided, in which case the replacements will occur on each string in turn. In
this case, the $replacement, $start and $length parameters may be provided either as scalar values to be applied to each input
string in turn, or as arrays, in which case the corresponding array element will be used for each input string.
o $replacement
- The replacement string.
o $start
- If $start is positive, the replacing will begin at the $start'th offset into $string. If $start is negative, the replacing will
begin at the $start'th character from the end of $string.
o $length
- If given and is positive, it represents the length of the portion of $string which is to be replaced. If it is negative, it rep-
resents the number of characters from the end of $string at which to stop replacing. If it is not given, then it will default to
strlen( $string ); i.e. end the replacing at the end of $string. Of course, if $length is zero then this function will have the
effect of inserting $replacement into $string at the given $start offset.
RETURN VALUES
The result string is returned. If $string is an array then array is returned.
EXAMPLES
Example #1
Simple substr_replace(3) examples
<?php
$var = 'ABCDEFGH:/MNRPQR/';
echo "Original: $var<hr />
";
/* These two examples replace all of $var with 'bob'. */
echo substr_replace($var, 'bob', 0) . "<br />
";
echo substr_replace($var, 'bob', 0, strlen($var)) . "<br />
";
/* Insert 'bob' right at the beginning of $var. */
echo substr_replace($var, 'bob', 0, 0) . "<br />
";
/* These next two replace 'MNRPQR' in $var with 'bob'. */
echo substr_replace($var, 'bob', 10, -1) . "<br />
";
echo substr_replace($var, 'bob', -7, -1) . "<br />
";
/* Delete 'MNRPQR' from $var. */
echo substr_replace($var, '', 10, -1) . "<br />
";
?>
Example #2
Using substr_replace(3) to replace multiple strings at once
<?php
$input = array('A: XXX', 'B: XXX', 'C: XXX');
// A simple case: replace XXX in each string with YYY.
echo implode('; ', substr_replace($input, 'YYY', 3, 3))."
";
// A more complicated case where each replacement is different.
$replace = array('AAA', 'BBB', 'CCC');
echo implode('; ', substr_replace($input, $replace, 3, 3))."
";
// Replace a different number of characters each time.
$length = array(1, 2, 3);
echo implode('; ', substr_replace($input, $replace, 3, $length))."
";
?>
The above example will output:
A: YYY; B: YYY; C: YYY
A: AAA; B: BBB; C: CCC
A: AAAXX; B: BBBX; C: CCC
NOTES
Note
This function is binary-safe.
SEE ALSO str_replace(3), substr(3), String access and modification by character.
PHP Documentation Group SUBSTR_REPLACE(3)