Commands by glaudiston

Commands by glaudiston (52)

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emulate a root (fake) environment without fakeroot nor privileges
This is sample output - yours may be different.
0

unshare -r --fork --pid unshare -r --fork --pid --mount-proc bash

glaudiston · 2020-05-23 12:40:24 155
parse and format IP:port currently in listen state without net tools

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
This is sample output - yours may be different.
```
0.0.0.0:111
10.174.109.1:53
127.0.0.53:53
0.0.0.0:22
127.0.0.1:631
0.0.0.0:8000
```
2

cat /proc/net/tcp | grep " 0A " | sed 's/^[^:]*: $..$$..$$..$$..$:$....$.*/echo $((0x\4)).$((0x\3)).$((0x\2)).$((0x\1)):$((0x\5))/g' | bash

glaudiston · 2020-05-23 12:36:21 152
Check whether laptop is running on battery or cable

Just an alternative for `acpi -b` Show Sample Output
This is sample output - yours may be different.
```
Discharging 46%
```
0

eval "$(printf "echo %s \$((%i * 100 / %i))\n" $(cat $(find /sys -name energy_now 2>/dev/null | head -1 | xargs dirname)/{status,energy_{now,full}}))%"

glaudiston · 2019-08-10 16:50:12 862

Discover full java className for import;

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

getJavaFullClassName SpringComponent

glaudiston · 2018-09-06 18:22:02 334

a function to find the fastest DNS server

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
This is sample output - yours may be different.
```
12.876  200.187.95.4
```
1

curl -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

glaudiston · 2017-02-02 12:00:38 20
Chronometer in hour format

Shorter and faster... Show Sample Output
This is sample output - yours may be different.
```
00:00:35.743165049
00:00:37.774117989
```
5

stf=$(date +%s.%N);for ((;;));do ctf=$( date +%s.%N );echo -en "\r$(date -u -d "0 $ctf sec - $stf sec" "+%H:%M:%S.%N")";done

glaudiston · 2017-01-26 14:31:33 28
Chronometer in hour format

Just add a format to chronometer in bash Show Sample Output
This is sample output - yours may be different.
```
00:00:58.949167828
00:01:03.670523001
```
0

stf=$(date +%s.%N);st=${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

glaudiston · 2017-01-26 13:42:53 18
Chronometer

A way for tracking times in bash Show Sample Output
This is sample output - yours may be different.
```
1.963692732
5.074129173
7.986306243
10.075936725
10.673989319^C
```
0

stf=$(date +%s.%N);st=${stf/.*/};sn=%{stf/*./};for ((;;));do ctf=$( date +%s.%N );ct=${ctf/.*/};cn=${ctf/*./}; echo -en "\r$(echo "scale=3; $ctf-$stf" | bc)";done

glaudiston · 2017-01-26 13:20:30 18
detect the fastest ldap server on a intranet

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
This is sample output - yours may be different.
```
0.431   srv4-srv-dc-p01.yourdomain.br
0.431   srv1-srv-dc-p01.yourdomain.br
0.668   srv1-srv-dc-p02.yourdomain.br
1.168   srv3-srv-dc-p01.yourdomain.br
7.778   srv2-srv-dc-p01.yourdomain.br
```
2

host -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

glaudiston · 2016-09-02 03:26:29 15
Copy a folder with progress with pv
This is sample output - yours may be different.
1

SRC="/source/folder"; TRG="/target/folder/"; tar cf - "$SRC" | pv -s $(du -sb "$SRC" | cut -f1) | tar xf - -C "$TRG"

glaudiston · 2015-11-20 22:55:44 13
do mvn clean in subdirs to free disk space

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
This is sample output - yours may be different.
```
...
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
...
```
-2

find -name pom.xml | while read f; do cd $(dirname "$f"); mvn clean; cd -; done;

glaudiston · 2015-04-15 21:24:49 13
Update music info with public database data

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; done
This is sample output - yours may be different.
0

eval echo $(echoprint-codegen "/path/to/file.mp3"| jq ' .[0].metadata | "mp3info -a \"" + .artist + "\" -t \"" + .title + "\" -l \"" + .release + "\" \"" + .filename + "\"" ' ) | bash

glaudiston · 2014-08-08 21:14:53 8

Download current stable kernel version from kernel.org

Access www.kernel.org and download the last stable linux kernel release. Show Sample Output

wget --no-check-certificate https://www.kernel.org/$(wget -qO- --no-check-certificate https://www.kernel.org | grep tar | head -n1 | cut -d\" -f2)

glaudiston · 2013-11-07 18:46:14 8

Diff 2 file struct - Useful for branch diff and jars diff(uncompressed)

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
This is sample output - yours may be different.
```
5469c5470
< e388cca0b1566dddf56362a223a003b1  ./META-INF/MANIFEST.MF
---
> 9dc47f8a8175dc93c4c2393ad3e09ce9  ./META-INF/MANIFEST.MF
```
7

diff <(cd A; find -type f|xargs md5sum ) <(cd B; find -type f | xargs md5sum )

glaudiston · 2013-07-02 18:02:05 9
Remove all zero size files from current directory (not recursive)

Remove all zero size files from current directory. Its a not recursive option like: find . -size 0c -exec rm {} \;
This is sample output - yours may be different.
-8

ls -s|grep -E "^ *0"|sed "s/^ *0 //g"|xargs -i rm "{}"

glaudiston · 2012-04-18 14:50:46 6
create a progress bar...

A simple way yo do a progress bar like wget. Show Sample Output
This is sample output - yours may be different.
```
p(){ 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
[=============================================================================>]
```
2

p(){ 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

glaudiston · 2011-02-20 02:17:05 4
Tricky implementation of two-dimensional array in Bash
This is sample output - yours may be different.
-1

getarray(){ 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

glaudiston · 2011-02-20 00:58:41 3
Put a console clock in top right corner

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
This is sample output - yours may be different.
```
                                                         Qui Fev 17 08:27:29 BRST 2011
 #
```
148

while sleep 1;do tput sc;tput cup 0 $(($(tput cols)-29));date;tput rc;done &

glaudiston · 2011-02-17 11:13:19 80
Right-align text in console using pipe like ( command | right )
This is sample output - yours may be different.
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

glaudiston · 2011-02-14 16:58:37 9

Center text in console with simple pipe like

Center the output text in max line length of buffered output pipe; Show Sample Output

center(){ 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

glaudiston · 2011-02-14 16:50:35 5

Pascal's triangle

see: http://en.wikipedia.org/wiki/Pascal%27s_triangle Show Sample Output

l=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;

glaudiston · 2011-02-11 17:00:20 16

pev - Extract PE(.exe) version information in bash

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
This is sample output - yours may be different.
```
$ pev /mnt/tmp/WINDOWS/explorer.exe
6.0.2900.5512
$pev /mnt/tmp/WINDOWS/system32/calc.exe
5.1.2600.0
```
0

pev winappfile.exe

glaudiston · 2011-02-10 17:55:17 3
Calculate N!
This is sample output - yours may be different.
2

echo $(( $(echo 1 "* "{2..10}) ))

glaudiston · 2011-02-10 17:09:28 9
Find the biggest files

Show the top file size in human readable form
This is sample output - yours may be different.
-1

find -type f | xargs -I{} du -s "{}" | sort -rn | head | cut -f2 | xargs -I{} du -sh "{}"

glaudiston · 2011-01-04 11:10:56 3
Find the biggest files

Show the top 10 file size
This is sample output - yours may be different.
1

find -type f | xargs -I{} du -sk "{}" | sort -rn | head

glaudiston · 2011-01-04 11:10:02 3
1 2 3 >

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Loop over the days of a month, in $YYYY$MM$DD format

Edit YYYY and MM at the beginning of the command with the year and month you want. Note that `DD=$(printf "%02d" $d)` will pad single digit integers with a leading zero. Substitute `echo $YYYY$MM$DD` at the end of the line with the command you want to launch, for instance script.pl --yyyymmdd $YYYY$MM$DD Also available on GitHub as bash util: https://github.com/fibo/yyyymmdd

network interface and routing summary

Convert files from DOS line endings to UNIX line endings

This method will also convert mac line endings.

CPU architecture details

This command list all CPU technical infos.

Converts uppercase chars in a string to lowercase

Another alternative is to define a function: lower() { echo ${@,,} } lower StrinG

Create a mirror of a local folder, on a remote server

Create a exact mirror of the local folder "/root/files", on remote server 'remote_server' using SSH command (listening on port 22) (all files & folders on destination server/folder will be deleted)

Fast command-line directory browsing

Not really alternative, just giving a different behavior listing current directory if no directory given.

Get AWS temporary credentials ready to export based on a MFA virtual appliance

You might want to secure your AWS operations requiring to use a MFA token. But then to use API or tools, you need to pass credentials generated with a MFA token. This commands asks you for the MFA code and retrieves these credentials using AWS Cli. To print the exports, you can use: `awk '{ print "export AWS_ACCESS_KEY_ID=\"" $1 "\"\n" "export AWS_SECRET_ACCESS_KEY=\"" $2 "\"\n" "export AWS_SESSION_TOKEN=\"" $3 "\"" }'` You must adapt the command line to include: * $MFA_IDis ARN of the virtual MFA or serial number of the physical one * TTL for the credentials

Just run it ;)

;)

Quickly generate an MD5 hash for a text string using OpenSSL

Here Strings / A variant of here documents, the format is:

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