Commands by glaudiston (52)
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0unshare -r --fork --pid unshare -r --fork --pid --mount-proc bash
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Useful for containers and environments where you need to know if a port is currently in listen mode but you have not easy way or privileges to install net-tools like netstat or ss. "0A" is the code for listen state. The IP hex is reverse order and all in hex format. Show Sample Output
2cat /proc/net/tcp | grep " 0A " | sed 's/^[^:]*: \(..\)\(..\)\(..\)\(..\):\(....\).*/echo $((0x\4)).$((0x\3)).$((0x\2)).$((0x\1)):$((0x\5))/g' | bash -
Just an alternative for `acpi -b` Show Sample Output
0eval "$(printf "echo %s \$((%i * 100 / %i))\n" $(cat $(find /sys -name energy_now 2>/dev/null | head -1 | xargs dirname)/{status,energy_{now,full}}))%" -
If you want to code without a IDE, using java may be painful to discover correct full class names to import. This script google it with javadoc word, then with some luck we got the javadoc as first item. next it curl the target javadoc and extract full name from it. Can by customized to extract other javadoc infos. Pre-reqs: bash, google-chrome, html2text and core-utils Show Sample Output
1getJavaFullClassName SpringComponent -
http://public-dns.info gives a list of online dns servers. you need to change the country in url (br in this url) with your country code. this command need some time to ping all IP in list. Show Sample Output
1curl -s http://public-dns.info/nameserver/br.csv| cut -d, -f1 | xargs -i timeout 1 ping -c1 -w 1 {} | grep time | sed -u "s/.* from \([^:]*\).*time=\([^ ]*\).*/\2\t\1/g" | sort -n | head -n1 -
Shorter and faster... Show Sample Output
5stf=$(date +%s.%N);for ((;;));do ctf=$( date +%s.%N );echo -en "\r$(date -u -d "0 $ctf sec - $stf sec" "+%H:%M:%S.%N")";done -
Just add a format to chronometer in bash Show Sample Output
0stf=$(date +%s.%N);st=${stf/.*/};sn=%{stf/*./};for ((;;));do ctf=$( date +%s.%N );ct=${ctf/.*/};cn=${ctf/*./}; dtf=$(echo "scale=3; $ctf-$stf" | bc); dt=${dtf/.*/}; dt=${dt:=0};echo -en "\r$(date -u -d @$dt "+%H:%M:%S.${dtf/*./}")";done -
A way for tracking times in bash Show Sample Output
0stf=$(date +%s.%N);st=${stf/.*/};sn=%{stf/*./};for ((;;));do ctf=$( date +%s.%N );ct=${ctf/.*/};cn=${ctf/*./}; echo -en "\r$(echo "scale=3; $ctf-$stf" | bc)";done -
This command line detect ldap hosts, by mandatory dns entry, then ping them to detect response average. based on ping response average it sorts and print the faster server in first output line Show Sample Output
2host -t srv _ldap._tcp | sed "s/.*[ ]\([^ ]*\)[.]$/\1/g" | xargs -i ping -c 1 {} | grep -E "(statistics|avg)" | sed "s/^--- \([^ ]*\).*/,\1:/g"|tr -d "\n" | tr "," "\n" | sed "1d;s|^\([^:]*\).*=[^/]*/\([^/]*\).*|\2\t\1|g" |sort -n -
1SRC="/source/folder"; TRG="/target/folder/"; tar cf - "$SRC" | pv -s $(du -sb "$SRC" | cut -f1) | tar xf - -C "$TRG"
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this command is used to locate all pom.xml files, access the dir and do a mvn clean, but I do recommend you to disable network interfaces to not download dependencies packages to be faster. Show Sample Output
-2find -name pom.xml | while read f; do cd $(dirname "$f"); mvn clean; cd -; done; -
echoprint identify your song, then return artist, song name and album name(release) in a JSON. jq parse it and mp3info set the data in your mp3 file. of course it depends on: mp3info jq echoprint You need to set the environment variable
export CODEGEN_NEST_API_KEY='YOUR_ECHONEST_KEY_HERE'You can use it with find, but probably will bypass the 120 request/minute of developer account key. So, use a sleep to do it. Something like:find -name \*.mp3 | while read $f; do eval echo $(echoprint-codegen "$f" | jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash; sleep 1; done0eval echo $(echoprint-codegen "/path/to/file.mp3"| jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash -
Access www.kernel.org and download the last stable linux kernel release. Show Sample Output
0wget --no-check-certificate https://www.kernel.org/$(wget -qO- --no-check-certificate https://www.kernel.org | grep tar | head -n1 | cut -d\" -f2) -
This is usefull to diff 2 paths in branches of software, or in different versions of a same zip file. So you can get the real file diff. Show Sample Output
7diff <(cd A; find -type f|xargs md5sum ) <(cd B; find -type f | xargs md5sum ) -
Remove all zero size files from current directory. Its a not recursive option like: find . -size 0c -exec rm {} \;
-8ls -s|grep -E "^ *0"|sed "s/^ *0 //g"|xargs -i rm "{}" -
A simple way yo do a progress bar like wget. Show Sample Output
2p(){ c=$(($(tput cols)-3));j=$(($1*c/100)); tput sc;printf "[$(for((k=0;k<j;k++));do printf "=";done;)>";tput cuf $((c-j));printf "]";tput rc; };for((i=0; i<=100; i++));do p i;done;echo -
-1getarray(){ a=$1;b="${a[$2]}";eval "c=$b";echo "${c[$3]}";return 0;};a[0]="( a b c )";a[1]="( d e f )";getarray a 1 2
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A nice way to use the console in full screen without forget the current time. you can too add other infos like cpu and mem use. Show Sample Output
149while sleep 1;do tput sc;tput cup 0 $(($(tput cols)-29));date;tput rc;done & -
1$ right(){ l="$(cat -)"; s=$(echo -e "$l"| wc -L); echo "$l" | while read l;do j=$(((s-${#l})));echo "$(while ((j-->0)); do printf " ";done;)$l";done;}; ls --color=none / | right
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Center the output text in max line length of buffered output pipe; Show Sample Output
1center(){ l="$(cat -)"; s=$(echo -e "$l"| wc -L); echo "$l" | while read l;do j=$(((s-${#l})/2));echo "$(while ((--j>0)); do printf " ";done;)$l";done;}; ls --color=none / | center -
0l=10;for((i=0;i<$l;i++));do eval "a$i=($(pv=1;v=1;for((j=0;j<$l;j++));do [ $i -eq 0 -o $j -eq 0 ]&&{ v=1 && pv=1; }||v=$((pv+a$((i-1))[$((j))]));echo -n "$v ";pv=$v;done;));";eval "echo \"\${a$i[@]}\"";done | column -t;
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pev: PE version utility, to show the Product Version of compiled PE files tarball: http://www.mentebinaria.com.br/coding40/pev-0.22.tar.gz source: https://github.com/merces/pev home: http://coding40.mentebinaria.com.br/projetos/pev Show Sample Output
0pev winappfile.exe -
2echo $(( $(echo 1 "* "{2..10}) ))
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Show the top file size in human readable form
-1find -type f | xargs -I{} du -s "{}" | sort -rn | head | cut -f2 | xargs -I{} du -sh "{}" -
Show the top 10 file size
1find -type f | xargs -I{} du -sk "{}" | sort -rn | head - 1 2 3 >
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