Commands by unixmonkey24812

Commands by unixmonkey24812 (4)

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recursively remove BOM
This is sample output - yours may be different.
1

find . -type f -exec sed -i -e '1s/^\xEF\xBB\xBF//' {} \;

unixmonkey24812 · 2012-01-11 03:16:15 59
recursively detecting files with a BOM
This is sample output - yours may be different.
-1

find . -type f -print0 | xargs -0r awk '/^\xEF\xBB\xBF/ {print FILENAME} {nextfile}'

unixmonkey24812 · 2012-01-11 03:15:12 5
copy root to new device

cloning root filesystem without suffering to possible interruptions. useful when moving a running system to a new partition. also works as a solid backup solution.
This is sample output - yours may be different.
0

rsync -aHux --exclude=/proc/* --exclude=/sys/* /* /mnt/target/

unixmonkey24812 · 2011-08-22 14:26:56 5
copy root to new device

preserve all except context and xattr. useful when moving a running system to a new partition.
This is sample output - yours may be different.
-1

cp -dpRx /* /mnt/target/

unixmonkey24812 · 2011-08-22 14:22:01 6

What's this?

commandlinefu.com is the place to record those command-line gems that you return to again and again. That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and voted up or down.

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Process command output line by line in a while loop

This snippet allows to process the output of any bash command line by line.

list files recursively by size

Convert seconds to [DD:][HH:]MM:SS

Converts any number of seconds into days, hours, minutes and seconds. sec2dhms() { declare -i SS="$1" D=$(( SS / 86400 )) H=$(( SS % 86400 / 3600 )) M=$(( SS % 3600 / 60 )) S=$(( SS % 60 )) [ "$D" -gt 0 ] && echo -n "${D}:" [ "$H" -gt 0 ] && printf "%02g:" "$H" printf "%02g:%02g\n" "$M" "$S" }

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

list files recursively by size

Grab the first 3 octets of your ip addresses

For machines that have many ip blocks spanning different Class C's, this will show which ones.

Which processes are listening on a specific port (e.g. port 80)

swap out "80" for your port of interest. Can use port number or named ports e.g. "http"

check the fucking weather

grab the weather, with a little expletive fun. replace the 48104 with a US zipcode, or the name of your city (such as ZIP="oslo"), unless you want to know what the weather is like for me (and that's fine too)

live ssh network throughput test

connects to host via ssh and displays the live transfer speed, directing all transferred data to /dev/null needs pv installed Debian: 'apt-get install pv' Fedora: 'yum install pv' (may need the 'extras' repository enabled)

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