• Bash shell
• Miscellaneous
• Perl
• ssh
• CVS
• LaTeX
• Gentoo

53273 Some silly (name)

forall() {
if [ $# -eq 0 ]; then
        echo Usage 1: forall directory string
        echo Usage 2: forall directory filepattern string
        return 1
elif [ $# -eq 2 ]; then
        echo "Searching in directory: $1 for all files, after the string: $2"
        find $1 -type f -exec grep --color=auto -Hn "$2" {} \;
elif [ $# -eq 3 ]; then
        echo "Searching in directory: $1 for files with name: $2 after the string: $3"
        find $1 -iname "*$2" -type f -exec grep --color=auto -Hn "$3" {} \;
fi
}

$ find . -naem "*.txt" -print
find: invalid predicate `-naem'

$ ^em^me^
find . -name "*.txt" -print

For more information:

For more information:

#!/usr/bin/perl -p
# Convert UTF-8 to iso8859-1, or to "{" "UTF8:" utf8-char "}" and return error.

# NOTE!Do not remove the code that checks if the UTF-8 sequence
#is valid and can be converted to iso8859-1.
#Otherwise filters like this can be fooled into converting
#some 8-bit chars to \0 or control characters.

# 1. octet in non-ASCII char should be [\300-\377].  However, we check
# for [\200-...] in case the input starts in the middle of a UTF-8 char.
s/([\200-\377][\200-\277]*)/&utf2iso($1)/ge;

sub utf2iso {
    my($first,@rest) = unpack('C*', $_[0]);
    $first -= 0xC2;
    if (@rest != 1 || ($first & ~1)) {
warn "\nutf2iso: Non-iso8859-1 characters(s) in text.\n" unless $w++;
return "{UTF8:$_[0]}";
    }
    chr($first * 0x40 + $rest[0]);
}

END { die "utf2iso: $w non-iso8859-1 characters.\n" if $w && $w > 1;

#!/usr/bin/perl -wp
# Convert iso8859-1 to UTF-8
s/([\200-\377])/pack('CC', 0xC0 + (ord($1) >> 6), (ord($1) & 0xBF))/ge;

ssh -N -L localport:destination-host:destport ssh-server

• Create a ssh key without password: ssh-keygen -t dsa
• Save it as id_rsa_backuphost
• On backuphost add the public key to /root/.ssh/authorized_keys (for example: cat id_rsa_backuphost.pub > /root/.ssh/authorized_keys )
• Then edit the file os it contains the following on the same line, but before the key

  command="run-my-backup-system.sh"

  Code listing .1
  It should look something like this (I'm using rdiff-backup):

  command="rdiff-backup --server"" ssh-rsa AAAAB...(rest of my key)

  Code listing .2
• And finally edit /etc/ssh/sshd_config to

  PermitRootLogin forced-commands-only

  Code listing .3
  This will allow root to only execute the commands defined in his authorized_keys

#! /bin/sh
ssh-agent $HOME/.xsession-real

mkdir cvs_repository
export CVSROOT=/path/to/cvs_repository
cvs init

cd sources
cvs import -m "Imported sources" modulename vendortag releasetag

If you would like CVS to write information about revision and date in the header of your files, paste one of there files, depending on the file type, into you file (using LaTeX as example):

%%% CVS version control block - do not edit manually
%%% $RCSfile: compiling-from-source.xml,v $
%%% $Revision: 1.3 $
%%% $Date: 2004/10/03 20:30:49 $
%%% $Source: /home/enrique/Development/CVS_REPOSITORY/Homepage/linux/software/compiling-from-source.xml,v $

%%% CVS version control block - do not edit manually
%%% $RCSfile: compiling-from-source.xml,v $
%%% $Revision: 1.3 $
%%% $Date: 2004/10/03 20:30:49 $
%%% $Source: /home/enrique/Development/CVS_REPOSITORY/Homepage/linux/software/compiling-from-source.xml,v $

For more information:

^modulename (date; cat; (sleep 2; cd /path/to/live/checkout; cvs -q update -d;) &) >> $CVSROOT/CVSROOT/updatelog 2>&1

Next add the following to /etc/lilo.conf or if you are using a PPC machine, /etc/yaboot.conf:

Image=/boot/vmlinux-2.6.7-mm5
        label=New
        root=/dev/hda4
        read-only
        append="softlevel=nonetwork"