hi guys,
Suppose you have 100 files in a folder and you want to replace all occurances of a word say "ABCD" in those files with "DCBA", how would you do
it ???
jatin (13 Replies)
I used the following script
cd pathname
for y in `ls *`;
do sed "s/ABCD/DCBA/g" $y > temp; mv temp $y;
done
and it worked fine for finding and replacing strings with names etc. in all files of the given path.
I'm trying to replace a string which consists of path (location of file)
... (2 Replies)
I have multiple script files that I have created, that allow me to simply replace a few tokens at the top of the file, and then not have to go through the actual script and change anything. I have about 10 of them, but I was hoping to find a way to write a small script that would allow me to input... (20 Replies)
find . -type f -name "*.sql" -print|xargs perl -i -pe 's/pattern/replaced/g'
this is simple logic to find and replace in multiple files & folders
Hope this helps.
Thanks
Zaheer (0 Replies)
Hi, I'm new to Unix. My understanding of Unix and its command is very limited.
I have about 1000 text files that have a word in it that I need to replace with a different word.
e.g.
a.txt has 1 line of txt: monday, tuesday, wednesday
b.txt has 1 line of txt: monday, tuesday,... (5 Replies)
Hey guys. I know pratically 0 about Linux, so could anyone please give me instructions on how to accomplish this ?
The distro is RedHat 4.1.2 and i need to find and replace a multiple lines string in several php files across subdirectories.
So lets say im at root/dir1/dir2/ , when i execute... (12 Replies)
Hi all
This is my first post. Please bear with me with all my mistakes. I started learning shell since couple of days now and this might be quite basic for all, i want to search for files in a directory containing specific string and replace it with new string. The code i wrote is quite bulky... (2 Replies)
Hi,
following Perl code i used for finding multiple strings and replace with single string.
code:
#!/usr/bin/perl
my @files = <*.txt>;
foreach $fileName (@files) {
print "$fileName\n";
my $searchStr = ',rdata\)' | ',,rdata\)' | ', ,rdata\)';
my $replaceStr =... (2 Replies)
Hi,
I have php files in main dir and sub dir's as well.
I need to find "new mysqli('localhost', 'System', 'xxxxxx', 'System', '3306');"
and replace as "new mysqli('localhost', 'unx_sys', 'yyyy', 'unx_sys', '3306');"
I tried like:
sed 's/new mysqli\(*\)\;$/new... (1 Reply)
Hello everybody, I need your help.
I have a php site that was expoited, the hacker has injected into many php files a phishing code that was discovered and removed in order to have again a clean code. Now we need to remove from many php files that malware. I need to create a script that find and... (2 Replies)
Discussion started by: ninocap
2 Replies
LEARN ABOUT NETBSD
mktemp
MKTEMP(1) BSD General Commands Manual MKTEMP(1)NAME
mktemp -- make temporary file name (unique)
SYNOPSIS
mktemp [-dqu] [-p tmpdir] {-t prefix | template ...}
DESCRIPTION
The mktemp utility takes each of the given file name templates and overwrites a portion of it to create a file name. This file name is
unique and suitable for use by the application. The template may be any file name with some number of 'Xs' appended to it, for example
/tmp/temp.XXXX. The trailing 'Xs' are replaced with the current process number and/or a unique letter combination. The number of unique
file names mktemp can return depends on the number of 'Xs' provided; six 'Xs' will result in mktemp testing roughly 26 ** 6 combinations.
If mktemp can successfully generate a unique file name, the file is created with mode 0600 (unless the -u flag is given) and the filename is
printed to standard output.
If the -t prefix option is given, mktemp will generate a template string based on the prefix and the TMPDIR environment variable, if set.
The default location if TMPDIR is not set is /tmp. The default location of the temporary directory can be overridden with the -p tmpdir
option. The template string created will consist of the prefix followed by a '.' and an eight character unique letter combination. 'Xs' in
the prefix string will be treated as literal. If an additional template argument is passed, a second file will be created. Care should be
taken to ensure that it is appropriate to use an environment variable potentially supplied by the user.
Any number of temporary files may be created in a single invocation using multiple template arguments, also a single one based on the inter-
nal template with the -t option value as filename prefix.
At least one template argument or the -t option must be present.
mktemp is provided to allow shell scripts to safely use temporary files. Traditionally, many shell scripts take the name of the program with
the pid as a suffix and use that as a temporary file name. This kind of naming scheme is predictable and the race condition it creates is
easy for an attacker to win. A safer, though still inferior, approach is to make a temporary directory using the same naming scheme. While
this does allow one to guarantee that a temporary file will not be subverted, it still allows a simple denial of service attack. For these
reasons it is suggested that mktemp be used instead.
OPTIONS
The available options are as follows:
-d Make a directory instead of a file.
-q Fail silently if an error occurs. This is useful if a script does not want error output to go to standard error.
-t prefix
Generate a template (using the supplied prefix and TMPDIR if set) to create a filename template. If -t prefix and template are both
given, prefix will not apply to template.
-u Operate in ``unsafe'' mode. The temp file will be unlinked before mktemp exits. This is slightly better than mktemp(3) but still
introduces a race condition. Use of this option is not encouraged.
EXIT STATUS
The mktemp utility exits with a value of 0 on success, and 1 on any failure.
EXAMPLES
The following sh(1) fragment illustrates a simple use of mktemp where the script should quit if it cannot get a safe temporary file.
TMPFILE=`mktemp /tmp/${0##*/}.XXXXXX` || exit 1
echo "program output" >> $TMPFILE
To allow the use of $TMPDIR:
TMPFILE=`mktemp -t ${0##*/}` || exit 1
echo "program output" >> $TMPFILE
In this case, we want the script to catch the error itself.
TMPFILE=`mktemp -q /tmp/${0##*/}.XXXXXX`
if [ $? -ne 0 ]; then
echo "$0: Can't create temp file, exiting..."
exit 1
fi
SEE ALSO mkdtemp(3), mkstemp(3), mktemp(3), environ(7)HISTORY
The mktemp utility appeared in NetBSD 1.5. It has been imported from FreeBSD, the idea and the manual page were taken from OpenBSD.
BSD August 15, 2009 BSD