This post will be updated regularly with helpful linux command line .
Running short of disk space?
Finding those large files tucked away in some dark corner of your machine is easy with this command.
cd /path/to/where/you/want
du -hsx * | sort -rh | head -10
- du command -h option : display sizes in human readable format (e.g., 1K, 234M, 2G).
- du command -s option : show only a total for each argument (summary).
- du command -x option : skip directories on different file systems.
- sort command -r option : reverse the result of comparisons.
- sort command -h option : compare human readable numbers. This is GNU sort specific option only.
- head command -10 OR -n 10 option : show the first 10 lines.
Finding a string in a file
Simple one this but I always seem to forget the switches
grep -H -r -i "redeem reward" /home/gerbil
- grep command -H option : do not print matching lines just file name
- grep command -r option : recursive
- grep command -i option : ignore case
Finding a string in a file with a specific extension
Grep specific file extensions for a string. The syntax for --exclude is identical.
grep pattern -r -i --include=\*.{cpp,h} rootdir
Stop crazy line overwriting when using putty terminal
shopt -s checkwinsize