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1126 total

charpal - launch the Character Palette

to shell osx mac bash unix launch character palette by jvs on Sep 07, 2008

/usr/bin/locate *CharPaletteServer.app

function charpal() {
   /usr/bin/open /System/Library/Components/CharacterPalette.component/Contents/SharedSupport/CharPaletteServer.app
   return 0
}

Get process ID (PID) via ps or killall

to ps kill shell osx mac bash unix process killall pid by jvs on Sep 07, 2008

export PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
export IFS=$' \t\n'

/usr/bin/sudo /bin/mkdir -p /usr/local/bin
/usr/bin/sudo /usr/sbin/chown root:wheel /usr/local /usr/local/bin
/usr/bin/sudo /bin/chmod 0755 /usr/local /usr/local/bin

ls -ld /usr/local /usr/local/bin

man killall | less -p 'Show only'
help kill

kill -l
kill -l 1 2 3 15

help type
type -t kill killall

# the -s option just triggers a fake kill
killall -s Finder
killall -s -HUP Finder
killall -s -9 Finder
killall -s -3 Finder


# cf. http://bashcurescancer.com/using-kill-to-see-if-a-process-is-alive.html
open -a 'Activity Monitor'
killall -s Terminal
kill -0 3832 &>/dev/null; echo $?           # no process with ID 3832 running if exit status is 1
echo TerminalPID=$(killall -s Terminal | awk '{print $NF}')
kill -0 $TerminalPID &>/dev/null; echo $?   # Terminal is alive
kill -0 $PPID &>/dev/null; echo $?          # Bash is alive


# kpid - get PID using killall -s

/bin/cat > ~/Desktop/kpid <<-'EOF'
#!/bin/sh

declare kpid rc

kpid=$(/usr/bin/killall -s -u $(/usr/bin/id -u) "${@}" 2>/dev/null)
rc=$?

if [[ $rc -eq 0 ]]; then
   printf "%s" "$kpid" | awk '{print $NF}'
else
   exit 1
fi

exit  0

EOF


/usr/bin/sudo /bin/mv -i ~/Desktop/kpid /usr/local/bin
/usr/bin/sudo /usr/sbin/chown root:wheel /usr/local/bin/kpid
/usr/bin/sudo /bin/chmod 0755 /usr/local/bin/kpid
/usr/bin/sudo /usr/bin/nano /usr/local/bin/kpid

open -a 'Activity Monitor'

kpid Finder
kpid Safari
kpid Dock
kpid TextEdit
kpid 'QuickTime Player'

kpid launchd
/usr/bin/sudo pid launchd

kpid cupsd; echo $?
/usr/bin/sudo kpid cupsd

kpid bash
/usr/bin/sudo kpid bash; echo $?

# kill Bash
#echo $PPID
#kill -HUP  $PPID
#kill -KILL $PPID


#---------------------------------------------------------------


# pspid - get PID using ps

/bin/cat > ~/Desktop/pspid <<-'EOF'
#!/bin/sh

declare pspid

if [[ "$1" = "-l" ]]; then

   #if [[ $# -eq 1 ]]; then /bin/ps -r -axco pid,command; exit 0; fi
   #if [[ $# -eq 1 ]]; then /bin/ps -axco pid,command | /usr/bin/sed '1,1d' | /usr/bin/sort -rn ; exit 0; fi
   if [[ $# -eq 1 ]]; then /bin/ps -axco pid,command | /usr/bin/sed '1,1d' | /usr/bin/sort -n ; exit 0; fi

   #pspid="$(/bin/ps -axco pid,command | /usr/bin/awk "/${2}/ { print \$1,\$2 }")"
   #printf "%-15s %-15s\n" $(printf "%s" "$pspid" | /usr/bin/sort -n)
   
   #pspid="$(/bin/ps -axco pid,command,uid | /usr/bin/awk "/${2}/ { print \$1,\$2,\$3 }")"
   #printf "%-20s %-20s %-20s\n" $(printf "%s" "$pspid" | /usr/bin/sort -n)

   pspid="$(/bin/ps -axco pid,command,uid,user | /usr/bin/awk "/${2}/ {print \$1,\$2,\$3,\$4}")"
   printf "%-20s %-20s %-20s %-20s\n" $(printf "%s" "$pspid" | /usr/bin/sort -n)

   exit 0

fi

pspid="$(/bin/ps -axco pid,command | /usr/bin/awk "/${@}/ {print \$1}")"

if [[ -n "$pspid" ]]; then
   printf "%s\n" "$pspid"
else
   exit 1
fi

exit  0

EOF


/usr/bin/sudo /bin/mv -i ~/Desktop/pspid /usr/local/bin
/usr/bin/sudo /usr/sbin/chown root:wheel /usr/local/bin/pspid
/usr/bin/sudo /bin/chmod 0755 /usr/local/bin/pspid
/usr/bin/sudo /usr/bin/nano /usr/local/bin/pspid

open -a 'Activity Monitor'

pspid Finder
pspid Safari
pspid TextEdit
pspid 'QuickTime Player'
pspid login
pspid dynamic_pager
pspid launchd
pspid bash
echo $PPID

pspid -l
pspid -l login
pspid -l launchd
pspid -l bash
pspid -l '.*[sS]erver.*'
pspid -l '.*d$'
pspid -l '.*' | grep nobody
pspid -l '.*' | grep root

Handling control characters on the command line

to shell osx mac bash unix character control nonprintable by jvs on Sep 06, 2008

# cf. http://en.wikipedia.org/wiki/Control_character and 
# http://ascii.cl/control-characters.htm

printf '\033'"\n" | cat -vet -
printf '\x0d'"\n" | cat -vet -

[ctrl-v][esc]
[ctrl-v][ctrl-m]

printf '[ctrl-v][ctrl-m]' | cat -vet -; echo


# cf. http://codesnippets.joyent.com/posts/show/1630
printf !:1 | sed -n -e 'l' 

# for an alternative to !:1 try [esc][ctrl][y]
printf !:1 | pbcopy    

# cf. man ascii
printf $(pbpaste) | od -A n -b
printf $(pbpaste) | od -A n -t xC
printf $(pbpaste) | od -A n -t dC

printf $(pbpaste) | od -A n -c
printf $(pbpaste) | od -A n -a

echo $'hel\rlo' 
echo $'hel\rlo' | sed s/[ctrl-v][ctrl-m]//
echo $'hel\rlo' | sed 's/[ctrl-v][ctrl-m]//'
echo $'hel\rlo' | sed "s/[ctrl-v][ctrl-m]//"
echo $'hel\rlo' | sed s/$'[ctrl-v][ctrl-m]'//


man infocmp
infocmp --help

infocmp -1 | grep '\^'
infocmp -1 | grep '\<k'
infocmp -L1 | grep '\^'
infocmp -I1 | grep '\^'
infocmp -C1 | grep '\^'


tput cup 0 0
tput cup 0 0 | cat -vet -; echo
tput cup 0 0 | sed -n -e 'l'
tput cup 0 0 | od -A n -c | sed '$,$d'
tput cup 0 0 | od -A n -a | sed '$,$d'
tput cup 0 0 | od -A n -b | sed '$,$d'
tput cup 0 0 | od -A n -t xC | sed '$,$d'

tput sgr0 | cat -vet -; echo
tput cuu | cat -vet -; echo
tput up | cat -vet -; echo
tput dl1 | cat -vet -; echo

tput kbs | wc -c
tput kbs | ruby -n -e 'p $_.to_s'


printf "%s\000\n" "str" | cat -vet -
printf "%s\000\n" "str" | od -A n -b | sed '$,$d'
printf "%s\000\n" "str" | sed -n -e 'l'
printf "%s\000\n" "str" | ruby -n -e 'p $_.to_s'

Handling file names with initial dash character

to shell osx mac bash unix filename dash touch rm by jvs on Sep 05, 2008

export PATH=/usr/bin:/bin:/usr/sbin:/sbin
export IFS=$' \t\n'

mkdir -p ~/Desktop/TestDir
touch ~/Desktop/TestDir/file{1,2,3,4,5}.txt
open ~/Desktop/TestDir

cd ~/Desktop/TestDir

touch -i

touch ~/Desktop/TestDir/-i

touch -- -i
chmod 000 -i
touch -- --i.txt
chmod 000 --i.txt

rm -f -i
rm -f -i -R *

rm -f -- -i
rm -f -- --i.txt

#rm -f ./-i
#rm -f ./--i.txt

rm -f -i -R *

Javascript String Replace

to javascript by therad on Sep 05, 2008

just like php's str_replace

var visitorName = "Chuck";
var myOldString = "Hello username! I hope you enjoy your stay username.";
var myNewString = myOldString.replace("username", visitorName);

document.write("Old string =  " + myOldString); 
document.write("<br />New string = " + myNewString);

flip - newline conversion tool

to shell osx mac bash windows unix newline linefeed conversion macintosh by jvs on Sep 04, 2008

export PATH=/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin
export IFS=$' \t\n'

# download & install flip
cd ~/Desktop
curl -L -O http://ccrma-www.stanford.edu/~craig/utility/flip/flip.osx
mv ~/Desktop/flip.osx ~/Desktop/flip
/usr/bin/sudo /bin/cp -ip ~/Desktop/flip /usr/bin
/usr/bin/sudo /usr/sbin/chown root:wheel /usr/bin/flip
/usr/bin/sudo /bin/chmod +x /usr/bin/flip
ls -l /usr/bin/flip

flip
flip -t /path/to/file     # display current file type
flip -u /path/to/file     # convert to Unix: "\n"
flip -d /path/to/file     # convert to MS-DOS/Windows: "\r\n"
flip -m /path/to/file     # convert to Macintosh (OS 9): "\r"


#----------------------------------


# create a test file

testfile="${HOME}/Desktop/testfile.txt"

function createfile() {
   testfile="${HOME}/Desktop/testfile.txt"
   /usr/bin/jot -b 'sample text' 10 | /bin/cat -n > "$testfile"
   # append a line with a '\r\n' line separator
   printf "%s\r\n\r\n\r\r\n" "sample text" >> "$testfile"      
   # append a last line without a terminating '\n'
   printf "%s" "sample text" >> "$testfile"          
   return 0
}


function odcfile() {

/usr/bin/od -A n -c < "$@" | /usr/bin/sed -E -e 's/^[[:space:]]{11}//' \
       -e s/[[:space:]]{4}/$'\001'/g \
       -e 's/[[:space:]]+//g' | \
       /usr/bin/tr -d '\n' | /usr/bin/tr '\001' ' ' | \
       /usr/bin/sed -e s/\\\\n/$'\\\\\\n\\\n'/g 

return 0
}


createfile
odcfile "$testfile"
flip -t "$testfile"     # display current file type

flip -d "$testfile"     # convert to MS-DOS/Windows: "\r\n"
flip -t "$testfile"
odcfile "$testfile"

flip -m "$testfile"     # convert to Macintosh (OS 9): "\r"
flip -t "$testfile"
odcfile "$testfile"

flip -u "$testfile"     # convert to Unix: "\n"
flip -t "$testfile"
odcfile "$testfile"

Install ikiwiki in an arbitrary directory

to perl ikiwiki by madams on Sep 04, 2008

ikiwiki doesn't install using PREFIX= like normal programs (it still wants to put stuff in /etc/ikiwiki).

perl Makefile.PL DESTDIR=/path/to/install/dir PREFIX="" INSTALL_BASE="/"

Fire Event With Listener

to javascript by therad on Sep 03, 2008 1 Comments

If you need to fire off an event but it is currently handled by an event listener.

more information here http://www.howtocreate.co.uk/tutorials/javascript/domevents

var fireOnThis = document.getElementById('someID');
if( document.createEvent ) {
  var evObj = document.createEvent('MouseEvents');
  evObj.initEvent( 'mousemove', true, false );
  fireOnThis.dispatchEvent(evObj);
} else if( document.createEventObject ) {
  fireOnThis.fireEvent('onmousemove');
}

Javascript Event Listeners

to javascript by therad on Sep 03, 2008 1 Comments

Add event listeners for all browsers at once.
##
Not my own code but works like a charm!
##

//*** This code is copyright 2003 by Gavin Kistner, gavin@refinery.com
//*** It is covered under the license viewable at http://phrogz.net/JS/_ReuseLicense.txt
//*** Reuse or modification is free provided you abide by the terms of that license.
//*** (Including the first two lines above in your source code satisfies the conditions.)


//***Cross browser attach event function. For 'evt' pass a string value with the leading "on" omitted
//***e.g. AttachEvent(window,'load',MyFunctionNameWithoutParenthesis,false);

function AttachEvent(obj,evt,fnc,useCapture){
	if (!useCapture) useCapture=false;
	if (obj.addEventListener){
		obj.addEventListener(evt,fnc,useCapture);
		return true;
	} else if (obj.attachEvent) return obj.attachEvent("on"+evt,fnc);
	else{
		MyAttachEvent(obj,evt,fnc);
		obj['on'+evt]=function(){ MyFireEvent(obj,evt) };
	}
} 

//The following are for browsers like NS4 or IE5Mac which don't support either
//attachEvent or addEventListener
function MyAttachEvent(obj,evt,fnc){
	if (!obj.myEvents) obj.myEvents={};
	if (!obj.myEvents[evt]) obj.myEvents[evt]=[];
	var evts = obj.myEvents[evt];
	evts[evts.length]=fnc;
}
function MyFireEvent(obj,evt){
	if (!obj || !obj.myEvents || !obj.myEvents[evt]) return;
	var evts = obj.myEvents[evt];
	for (var i=0,len=evts.length;i<len;i++) evts[i]();
}

Delete carriage returns & newlines with sed

to shell osx mac bash vi unix vim file sed ed tr newline cr nl carriage return in_place by jvs on Sep 03, 2008

# delete newlines

printf "a\nb\nc\nd\ne\nf" | sed -n -e 'l'
printf "a\nb\nc\nd\ne\nf" | sed -E -e :a -e '$!N; s/\n//g; ta'

printf "a\n\nb" | sed -n -e 'l'
printf "a\n\nb" | sed -E -e :a -e '$!N; s/\n//g; ta' | sed -n -e 'l'
printf "a\n\nb" | sed -E -e :a -e '$!N; s/\n$//g; ta' | sed -n -e 'l'
printf "a\n\n\n\n\n\nb" | sed -E -e :a -e '$!N; s/\n$//g; ta' | sed -n -e 'l'


# delete carriage returns

printf "he\r\rllo\n" | sed -n -e 'l'
printf "he\r\rllo\n" | sed -e s/$'\r'//g | sed -n -e 'l'
printf "he\r\rllo\n" | sed -e s/$'\r\r'/$'\r'/g | sed -n -e 'l'

CR=$'\r'
printf "hello\r\r\n" | sed "s/$CR$CR$/$CR/g" | sed -n -e 'l'


# alternatives

printf "a\nb\nc\nd\ne\nf" | tr -d '\n'

# cf. http://linux.dsplabs.com.au/rmnl-remove-new-line-characters-tr-awk-perl-sed-c-cpp-bash-python-xargs-ghc-ghci-haskell-sam-ssam-p65/
while read -d $'\n'; do echo -n "${REPLY} "; done < <((printf "a\nb\nc\nd\ne\nf"))
while read -d $'\n'; do printf "%s   " "${REPLY}"; done < <((printf "a\nb\nc\nd\ne\nf"))

xargs echo < <((printf "a\nb\nc\nd\ne\nf"))
xargs printf "%s " < <((printf "a\nb\nc\nd\ne\nf"))

printf "a\nb\nc\nd\ne\nf" | /usr/bin/paste -s -d ' ' -     # cf. man paste

# delete newlines in-place (also see below)
vim -e -s +':%j' +'w!' +'qa!' /path/to/file

# insert newlines again
printf "%s\n" "hello" | sed -e s/l/$'\\\n'/g | sed -n -e 'l'
printf "%s\n" "hello" | sed -E s/\(l\)/\\1$'\\\n'/g | sed -n -e 'l'


#-----------------------------------------------------------


# converting between \n and \n\r

# cf. also flip, http://ccrma.stanford.edu/~craig/utility/flip/ and 
# http://codesnippets.joyent.com/posts/show/1660


# convert \n into \r\n
printf "a\nb\nc\nd\ne\nf\n"
printf "a\nb\nc\nd\ne\nf\n" | sed -n -e 'l'

printf "a\nb\nc\nd\ne\nf\n" | sed s/$/$'\r'/
printf "a\nb\nc\nd\ne\nf\n" | sed s/$/$'\r'/ | sed -n -e 'l'

printf "a\nb\n\n\n\n\n\n\n\n\n\n\nc\nd\ne\nf\n" | sed -E -e :a -e '$!N; s/\n$//g; ta' | sed -E s/$/$'\r'/ | sed -n -e 'l'

while read -d $'\n'; do printf "%s\r\n" "${REPLY}"; done < <((printf "a\nb\nc\nd\ne\nf\n"))
while read -d $'\n'; do printf "%s\r\n" "${REPLY}"; done < <((printf "a\nb\nc\nd\ne\nf\n")) | sed -n -e 'l'


# convert \r\n into \n
printf "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\n"
printf "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\n" | sed -n -e 'l'

printf "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\n" | sed s/$'\r'$//
printf "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\n" | sed s/$'\r'$// | sed -n -e 'l'

printf "a\r\nb\r\r\r\r\r\r\r\r\r\r\nc\r\nd\r\ne\r\nf\r\n" | sed s/$'\r'*$// | sed -n -e 'l'
printf "a\r\nb\r\r\r\r\r\r\r\r\r\r\nc\r\nd\r\ne\r\nf\r\n" | sed -E s/$'\r'+$// | sed -n -e 'l'

# lacks a terminating \n though
while read -d $'\r'; do printf "%s" "${REPLY}"; done < <((printf "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\n"))
while read -d $'\r'; do printf "%s" "${REPLY}"; done < <((printf "a\r\nb\r\nc\r\nd\r\ne\r\nf\r\n")) | sed -n -e 'l'


#---------------------------------------


# create test files

testfile="${HOME}/Desktop/testfile.txt"
output="${HOME}/Desktop/output.txt"

function createfiles() {

testfile="${HOME}/Desktop/testfile.txt"
output="${HOME}/Desktop/output.txt"

/usr/bin/touch "$output"

#/usr/bin/jot -b 'sample text' 10 | /bin/cat > "$testfile"
/usr/bin/jot -b 'sample text' 10 | /bin/cat -n > "$testfile"
printf "%s\r\n\r\n\r\r\n" "sample text" >> "$testfile"      # append a line with a '\r\n' line separator
printf "%s" "sample text" >> "$testfile"          # append a last line without a terminating '\n'

return 0
}

createfiles


# inspect test file

cat -vet "$testfile"
ed -s "$testfile" <<< $',l'
sed -n -e 'l'  "$testfile"
ruby -n -e 'p $_.to_s' < "$testfile"


function odcfile() {

/usr/bin/od -A n -c < "$@" | /usr/bin/sed -E -e 's/^[[:space:]]{11}//' \
       -e s/[[:space:]]{4}/$'\001'/g \
       -e 's/[[:space:]]+//g' | \
       /usr/bin/tr -d '\n' | /usr/bin/tr '\001' ' ' | \
       /usr/bin/sed -e s/\\\\n/$'\\\\\\n\\\n'/g 

return 0
}


odcfile "$testfile"


# remove newlines "\n"

# create a new file with newline characters replaced with a space
sed -e :a -e '$!N; s/\n/ /g; ta' "$testfile" > "$output"
odcfile "$output"

# same, but in-place
sed -i "" -e :a -e '$!N; s/\n/ /g; ta' "$testfile"
odcfile "$testfile"

createfiles

# delete newlines in-place
sed -i "" -e :a -e '$!N; s/\n//g; ta' "$testfile"
odcfile "$testfile"

createfiles

# alternative for creating a new file without newlines
tr -d '\n' < "$testfile" > "$output"
odcfile "$output"



# delete carriage returns "\r"

# create a new file with carriage returns deleted
sed -e s/$'\r'//g "$testfile" > "$output"
sed -e s/$'\r'$//g "$testfile" > "$output"  # only at line end
odcfile "$output"

# alternative
tr -d '\r' < "$testfile" > "$output"
odcfile "$output"


# delete carriage returns in-place

sed -i "" -e s/$'\r'//g "$testfile" > "$output"
odcfile "$testfile"

createfiles

# cf. http://bash-hackers.org/wiki/doku.php?id=howto:edit-ed (Pitfalls)
ed -s "$testfile" <<< $'H\n,g/\r/s/\r//\n,w'      # delete one carriage return in a line
ed -s "$testfile" <<< $'H\n,g/\r/s/\r//g\n,w'     # delete all carriage returns in a line
ed -s "$testfile" <<< $'H\n,g/\r$/s/\r$//g\n,w'   # delete a carriage return at line end

odcfile "$testfile"



printf "\n" | od -A n -c
printf "\012" | od -A n -c
printf "\x0a" | od -A n -c

printf '[ctrl-v][ctrl-j]' | od -A n -c      #  \n or ^J


printf "\r" | od -A n -c
printf "\015" | od -A n -c
printf "\x0d" | od -A n -c

printf '[ctrl-v][ctrl-j]' | od -A n -c      #  \r or ^M


# vim
createfiles

vim "$testfile"
#...
:set number
:set list
:%s/^M//g
:set fileformat=unix
#:set fileformat=dos
:x

odcfile "$testfile"


# edit files in-place with vim

createfiles

# delete newlines in-place
vim -e -s +':%j' +'w!' +'qa!' "$testfile"
odcfile "$output"

createfiles

# replace every \r with \n
# cf. http://vim.wikia.com/wiki/Change_end-of-line_format_for_dos-mac-unix
vim -e -s +':%s/\r/\r/g' +':set fileformat=unix' +'w!' +'qa!' "$testfile"
odcfile "$output"

createfiles

# delete every \r
vim -e -s +':%s/\r//g' +':set fileformat=unix' +'w!' +'qa!' "$testfile"
odcfile "$output"

createfiles

# delete \r only when it occurs at the end of a line
vim -e -s +':%s/\r$//g' +':set fileformat=unix' +'w!' +'qa!' "$testfile"
odcfile "$output"

createfiles

# replace carriage return line endings with \n
# cf. Getting rid of ^M - mixing dos and unix, http://www.vim.org/tips/tip.php?tip_id=26
printf "\r" >> "$testfile"
vim -e -s +':g/\r$/s///g' +':set fileformat=unix' +'w!' +'qa!' "$testfile"
odcfile "$testfile"

createfiles

# delete last \n of file
vim -e -s +':set noeol bin' +':set fileformat=unix' +'w!' +'qa!' "$testfile"
odcfile "$output"

createfiles

# change mixed mode files to DOS mode
#vim -e -s +':%s/\r\r/\r/g' +'w!' +'qa!' "$testfile"
sed -i '' -e s/$'\r\r'/$'\r'/g  "$testfile"
vim -e -s +':e ++ff=dos' +'w!' +'qa!' "$testfile"
vim -e -s +':e ++ff=dos' +':set ff=dos' +'w!' +'qa!' "$testfile"
odcfile "$output"

vim "$testfile"
:set ff?
:x

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charpal - launch the Character Palette

Get process ID (PID) via ps or killall

Handling control characters on the command line

Handling file names with initial dash character

Javascript String Replace

flip - newline conversion tool

Install ikiwiki in an arbitrary directory

Fire Event With Listener

Javascript Event Listeners

Delete carriage returns & newlines with sed

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