Difference between revisions of "Useful Commands"
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| − | + | ====Data rescue==== | |
Have a dying disk? Better get the data off before it's too late! disk1 is the culprit in this example. | Have a dying disk? Better get the data off before it's too late! disk1 is the culprit in this example. | ||
dd conv=noerror,sync if=/dev/disk1 of=/Volumes/whatever/backup.dmg | dd conv=noerror,sync if=/dev/disk1 of=/Volumes/whatever/backup.dmg | ||
| − | + | ====Encrypted and growable (sparse) disk image==== | |
| + | (-size specifies max growth) | ||
hdiutil create dmg_name -size 1g -encryption -type SPARSE -fs HFS+ -volname Vault | hdiutil create dmg_name -size 1g -encryption -type SPARSE -fs HFS+ -volname Vault | ||
| − | + | ====Global find / replace==== | |
perl -pi -e 's/mandir=\'\${prefix}\/man\'/mandir=\'\${prefix}\/share\/man\'/g' configure | perl -pi -e 's/mandir=\'\${prefix}\/man\'/mandir=\'\${prefix}\/share\/man\'/g' configure | ||
| − | + | ====Disk Stats==== (zsh, all one line) | |
x=0 ; df -t hfs,afpfs | grep "/" | awk '{print $2}' | sed 's/G//g' | while read line ;\ | x=0 ; df -t hfs,afpfs | grep "/" | awk '{print $2}' | sed 's/G//g' | while read line ;\ | ||
do x=($line + $x); done ; echo "($x) / 1024 / 1024 / 2" | bc | do x=($line + $x); done ; echo "($x) / 1024 / 1024 / 2" | bc | ||
| − | + | ====Get console idle time==== | |
echo $((`ioreg -c IOHIDSystem | sed -e '/HIDIdleTime/ !{ d' -e 't' -e '}' -e 's/.* = //g' -e 'q'` / 1000000000)) | echo $((`ioreg -c IOHIDSystem | sed -e '/HIDIdleTime/ !{ d' -e 't' -e '}' -e 's/.* = //g' -e 'q'` / 1000000000)) | ||
Revision as of 19:50, 31 December 2005
Contents
Data rescue
Have a dying disk? Better get the data off before it's too late! disk1 is the culprit in this example.
dd conv=noerror,sync if=/dev/disk1 of=/Volumes/whatever/backup.dmg
Encrypted and growable (sparse) disk image
(-size specifies max growth)
hdiutil create dmg_name -size 1g -encryption -type SPARSE -fs HFS+ -volname Vault
Global find / replace
perl -pi -e 's/mandir=\'\${prefix}\/man\'/mandir=\'\${prefix}\/share\/man\'/g' configure
====Disk Stats==== (zsh, all one line)
x=0 ; df -t hfs,afpfs | grep "/" | awk '{print $2}' | sed 's/G//g' | while read line ;\
do x=($line + $x); done ; echo "($x) / 1024 / 1024 / 2" | bc
Get console idle time
echo $((`ioreg -c IOHIDSystem | sed -e '/HIDIdleTime/ !{ d' -e 't' -e '}' -e 's/.* = //g' -e 'q'` / 1000000000))
