InsanelyMac Forum > what's $3 $2 $1 etc mean?

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J o e l

May 21 2008, 11:54 AM

bless -mount "$3/" -setBoot and "$1/Contents/Resources/SetHidden" "$3" \

what do they mean? the $3 and $1. i've tried googling but i dont know what to look for.

lord_muad_dib

May 21 2008, 12:10 PM

that lne is inserted on a bash script? if yes, they are the "arguments" you insert in the command line

J o e l

May 21 2008, 12:15 PM

QUOTE

#!/bin/sh

"$1/Contents/Resources/SetHidden" "$3" \
"$1/Contents/Resources/hidden_MacOS9"

if [ "x$CF_USER_DATA_STRING" != "x" ]; then
echo "$CF_USER_DATA_STRING" > "$3/var/root/.CFUserTextEncoding";
"$3/usr/sbin/chown" -f root:wheel "$3/var/root/.CFUserTextEncoding";
"$3/bin/chmod" -f 644 "$3/var/root/.CFUserTextEncoding";
fi

bless -mount "$3/" -setBoot

diskutil repairPermissions "$3/"

"$3/bin/chmod" -R 755 "$3/System/Library/Extensions/"

"$3/usr/sbin/chown" -R root:wheel "$3/System/Library/Extensions/"

"$1/Contents/Resources/SetHidden" "$3" \
"$1/Contents/Resources/hidden_MacOS9"

diskutil repairPermissions "$3/"

exit 0

alright so it must be something=$1? but the above code does not have that line. could you explain?

FreemanTP

May 21 2008, 12:35 PM

assuming the scripts name is "myscript.sh"
you would start it from the Terminal like this:

CODE

./myscript arg1 arg2 arg3

Within the script you could access those arguments with $1,$2 and $3
$0 is usually the name of the called executable, in this case myscript.sh

J o e l

May 21 2008, 12:43 PM

alright. i got that part. thanks you.

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