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June 9, 2016 15:16
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Often Forgotten Helpful Commands
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# DD with progress bar (pv package required) | |
pv -tpreb myimage.img | sudo dd of=/dev/diskX bs=1m | |
# SSH port forwarding/tunneling | |
ssh -f -L local_port:destination_server:destination_port user@intermediate_server -N | |
# MySQL - Size per DB query | |
SELECT table_schema "DB name", sum( data_length + index_length ) / 1024 / 1024 "DB size in MB" FROM information_schema.TABLES GROUP BY table_schema ; | |
# MySQL - Size per Table query | |
SELECT table_name, round(((data_length + index_length) / (1024*1024)),2) as "Table size in MB" FROM information_schema.tables; | |
# rsync local folders | |
# r-> recursive , t-> preserve modification time, v-> verbose, u-> skip not modified files/folders, c-> checksum | |
# !careful! -c parameter adds huge overhead when syncing large files | |
rsync -rtvuc --progress folderX/ folderY/ | |
# Mount cifs protected share in MacOS | |
mount_smbfs -d 755 -f 755 //user:password@SHARESERVER/folder ~/Folder | |
# Expand LV after PV has been resized | |
pvresize /dev/pv_path | |
lvextend -l +100%FREE /dev/vg_name/lv_name | |
resize2fs /dev/mapper/lv_path |
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