Hi all,
i need to write an ls command which will pick up
ind_01.txt/pak_01.txt from
ind_01.txt
pak_01.txt
usa_01.txt
files in a directory..
i wrote a ls command by storing ind and pak in 2 variables and listing it. Its working fine. But the pattern to be matched should be sent in... (1 Reply)
Hi can anyone tell me what command should i use to find the files which have been created within 24hrs in / .
I tried with this
find mtime 24 /
But its not working. Pls let me know to solve the issue. (3 Replies)
Hi All,
I search the forum for my query, Glad that got solution to it. But i really want to understand how does this command work.
sed -e ':a' -e 's/\("*\),\(*"\)/\1~\2/;ta'
Basically it is replacing all the comma(,) characters in between quotes with a tilde.
Specially what does ':a' ,... (2 Replies)
Hi,
I'm a complete noobie at UNIX and have hit a problem.
I'm using the 'Talend' ETL tool to try and extract flat files from UNIX on a weekly basis.
The dates are maintained in a control table and the appropriate folder has been mounted.
I am using a component in 'Talend' which enable... (1 Reply)
#!/bin/bash
perl -nle'
/(?:date|time|ref)/ and print join " ", /(?:date|time|ref)+/g
or print
' inputfile
Problem I have is that I want to delete words that are on the line of the 3 words above (date, time, and reference). However, I do not want to delete the words... (9 Replies)
Hi I m creating a file which will serve as a virtual harddisk .
I m using following command to create a file.
#dd if=/dev/zero of=/tmp/Sample.dat bs=1M count=1024
I have following doubts regarding the operation.
1) In above example i m creating a file with byte size of 1M .However in... (1 Reply)
Lets say I have 100 files. in those files I need to search specific word and I want to tar all those files at once. how can I do that?tar -cvf test.tar |grep house *.*Will it work?
Please wrap all code, files, input & output/errors in CODE tags.
It makes them easier to read and preserves... (2 Replies)
guys im new here and i need help with some linux commands.
filea has keyword on each line
identity
aaa
bbb
ccc
i have following commands.
egrep 'www.identity' ~/home/m3 >~/home/lopo2
wc -l file ~/home/lopo2
say lopo2 has 44 lines
then output saved is
identity 44 (1 Reply)
The 'env' command prints out all of the environment variables and their values.
Come up with a command that prints a list of environment variables whose names
end with either 'NAME', 'DIR' or 'PATH'.
What I've tried.
$ env | grep ''
Although it highlights the part of the variables... (8 Replies)
Discussion started by: edujs7
8 Replies
LEARN ABOUT CENTOS
extutils::command
ExtUtils::Command(3pm) Perl Programmers Reference Guide ExtUtils::Command(3pm)NAME
ExtUtils::Command - utilities to replace common UNIX commands in Makefiles etc.
SYNOPSIS
perl -MExtUtils::Command -e cat files... > destination
perl -MExtUtils::Command -e mv source... destination
perl -MExtUtils::Command -e cp source... destination
perl -MExtUtils::Command -e touch files...
perl -MExtUtils::Command -e rm_f files...
perl -MExtUtils::Command -e rm_rf directories...
perl -MExtUtils::Command -e mkpath directories...
perl -MExtUtils::Command -e eqtime source destination
perl -MExtUtils::Command -e test_f file
perl -MExtUtils::Command -e test_d directory
perl -MExtUtils::Command -e chmod mode files...
...
DESCRIPTION
The module is used to replace common UNIX commands. In all cases the functions work from @ARGV rather than taking arguments. This makes
them easier to deal with in Makefiles. Call them like this:
perl -MExtUtils::Command -e some_command some files to work on
and NOT like this:
perl -MExtUtils::Command -e 'some_command qw(some files to work on)'
For that use Shell::Command.
Filenames with * and ? will be glob expanded.
FUNCTIONS
cat
cat file ...
Concatenates all files mentioned on command line to STDOUT.
eqtime
eqtime source destination
Sets modified time of destination to that of source.
rm_rf
rm_rf files or directories ...
Removes files and directories - recursively (even if readonly)
rm_f
rm_f file ...
Removes files (even if readonly)
touch
touch file ...
Makes files exist, with current timestamp
mv
mv source_file destination_file
mv source_file source_file destination_dir
Moves source to destination. Multiple sources are allowed if destination is an existing directory.
Returns true if all moves succeeded, false otherwise.
cp
cp source_file destination_file
cp source_file source_file destination_dir
Copies sources to the destination. Multiple sources are allowed if destination is an existing directory.
Returns true if all copies succeeded, false otherwise.
chmod
chmod mode files ...
Sets UNIX like permissions 'mode' on all the files. e.g. 0666
mkpath
mkpath directory ...
Creates directories, including any parent directories.
test_f
test_f file
Tests if a file exists. Exits with 0 if it does, 1 if it does not (ie. shell's idea of true and false).
test_d
test_d directory
Tests if a directory exists. Exits with 0 if it does, 1 if it does not (ie. shell's idea of true and false).
dos2unix
dos2unix files or dirs ...
Converts DOS and OS/2 linefeeds to Unix style recursively.
SEE ALSO
Shell::Command which is these same functions but take arguments normally.
AUTHOR
Nick Ing-Simmons "ni-s@cpan.org"
Maintained by Michael G Schwern "schwern@pobox.com" within the ExtUtils-MakeMaker package and, as a separate CPAN package, by Randy Kobes
"r.kobes@uwinnipeg.ca".
perl v5.16.3 2013-03-04 ExtUtils::Command(3pm)