Linux gitlab info

$ gitlab-ctl status 
# status of services

/# gitlab-rake gitlab:env:info

System information

System:

Proxy:          no

Current User:   git

Using RVM:      no

Ruby Version:   2.7.5p203

Gem Version:    3.1.6

Bundler Version:2.3.15

Rake Version:   13.0.6

Redis Version:  6.2.7

Sidekiq Version:6.4.0

Go Version:     unknown

GitLab information

Version:        15.3.3-ee

Revision:       1615d086ad8

Directory:      /opt/gitlab/embedded/service/gitlab-rails

DB Adapter:     PostgreSQL

DB Version:     13.6

URL:            http://gitlab.wangxg.com

HTTP Clone URL: http://gitlab.wangxg.com/some-group/some-project.git

SSH Clone URL:  git@gitlab.wangxg.com:some-group/some-project.git

Elasticsearch:  no

Geo:            no

Using LDAP:     no

Using Omniauth: yes

Omniauth Providers: 

GitLab Shell

Version:        14.10.0

Repository storage paths:

- default:      /var/opt/gitlab/git-data/repositories

GitLab Shell path:              /opt/gitlab/embedded/service/gitlab-shell

root@gitlab:/# 

Linux swap check create and using.

1. check current swap size 

$ free -m                                 

               total        used        free      shared  buff/cache   available

Mem:            4931         699        3260           7         971        3992

Swap:           1023           0        1023

2. create swap

$ sudo swapoff -a               

[sudo] password for kali: 

$ sudo dd if=/dev/zero of=/var/swapfile bs=1M count=4096

4096+0 records in

4096+0 records out

4294967296 bytes (4.3 GB, 4.0 GiB) copied, 7.89168 s, 544 MB/s

 

$ sudo mkswap /var/swapfile                             

mkswap: /var/swapfile: insecure permissions 0644, fix with: chmod 0600 /var/swapfile

Setting up swapspace version 1, size = 4 GiB (4294963200 bytes)

no label, UUID=0f0aef74-2c66-4c0c-b1d2-e7dd4bea06bc

$ sudo swapon /var/swapfile 

swapon: /var/swapfile: insecure permissions 0644, 0600 suggested.

$ chmod 600 /var/swapfile                                  

chmod: changing permissions of '/var/swapfile': Operation not permitted

$ free -m 

               total        used        free      shared  buff/cache   available

Mem:            4931        3807         174          23         950         839

Swap:           4095           0        4095

     

3. auto mount swap on os start

$ sudo echo "/var/swapfile swap swap defaults 0 0 " >> /etc/fstab 

$ cat  /etc/fstab

UUID=12deea7d-2c80-45a6-beb2-e91f0a02ca37       /       ext4    defaults,errors=remount-ro      0       1

/swapfile none swap defaults 0 0

/var/swapfile swap swap defaults 0 0 

linux grep output group capture

grep can't output all group captures after one grep action.

so. each grep a time. 

ex.

input_string= "Caused by: java.io.FileNotFoundException: /tmp/storage/imart/public/storage/default/im_workflow/data/default/transaction/202107/21/16/ma_8g2mm9ovekgierj/result/ep_8g2mo7z76kgrmrj/flow.xml (No such file or directory)"

#I want to get
#[1]=/tmp/storage/imart/public/storage/default/im_workflow/data/default/transaction
#[2]=202107/21/16/
#[3]=ma_8g2mm9ovekgierj
#[4]=ep_8g2mo7z76kgrmrj

#cmd:
a1=$(echo $input_string | grep -ioE  "/tmp/.+/transaction")
echo $a1
:/tmp/storage/imart/public/storage/default/im_workflow/data/default/transaction

a2=$(echo $input_string | grep -ioE "[0-9]{6}/[0-9]{2}/[0-9]{2}")
echo $a2
=> 202107/21/16

a3=$(echo $input_string | grep -ioE "[0-9]{6}/[0-9]{2}/[0-9]{2}/\w+" | grep -ioE "\w+$")
echo $a3
:ma_8g2mm9ovekgierj

a4=$(echo $input_string | grep -ioE "\w+/flow" | grep -ioE "^\w+")
echo $a4
:ep_8g2mo7z76kgrmrj

$ echo $input_string | grep -ioE  "/tmp/.+/transaction"

log=webapps/imart/WEB-INF/log/platform/

found=$(find $log -type f -name "*.log"  | xargs grep -ionE "Caused by: java.io.FileNotFoundException:.+" )

for input_string in $(find $log -type f -name "*.log" | xargs grep -ionE "Caused by: java.io.FileNotFoundException:.+" )

do

  a1=$(echo $input_string | grep -ioE  "/tmp/.+/transaction")

  a2=$(echo $input_string | grep -ioE "[0-9]{6}/[0-9]{2}/[0-9]{2}")

  a3=$(echo $input_string | grep -ioE "[0-9]{6}/[0-9]{2}/[0-9]{2}/\w+" | grep -ioE "\w+$")

  a4=$(echo $input_string | grep -ioE "\w+/flow" | grep -ioE "^\w+")

  echo a1=$a1,a2=$a2,a3=$a3,a4=$a4

done 

Linux ifconfig

#change network info 

#first reset a IP
ifconfig eth0 192.168.1.123 
#second reset netmask and broadcast for IP. 
ifconfig eth0 192.168.1.123 netmask 255.255.0.0 broadcast 192.168.1.255

#before change MAC, stop the network-adapter ethX.  
ifconfig eth0 down 

#third reset ether MAC for eth0
ifconfig eth0 hw ether 00:11:22:33:44:55
ifconfig eth0 up    #restart eth0

#request DHCP server for new IP
dhclient eth0 

#linux dns conf
more /etc/resolv.conf

 

linux cmd sed example

 1. sed s/mysql/MySQL/g test.conf >test2.conf 
     # replace all mysql to MySQL

 2. sed s/mysql/MySQL/ test.conf >test2.conf 
     # replace first mysql to MySQL

 3. sed s/mysql/MySQL/2 test.conf >test2.conf 
     # replace the second found mysql only to MySQL.

kali linux japanese keyboard layout setting

1. open setting/setting manager/keyboard.

2. tab to layout

3. add japanese and delete english

4. confirm keyboard layout = Generic 105-key PC (intl.)  

5. close window. setting completed.

AI の初級考え方１：お菓子を買う

背景：

　　こどもが３００円までのお菓子を買うこと

条件：

　　好きなお菓子の種類：

　　　１番はチョコレート   価格￥120　満足度：５

　　　２番はラムネ            価格￥80　  満足度：4　

　　　３番はじゃがりこ      価格￥90     満足度：3

質問：

      ３００円まで、最善のお菓子組み合わせは何でしょう。

計算式:

      チョコレート：ｘ 個

　　ラムネ　　　：y 個

      ジャカリコ   : z 個

     前提条件式:       120x + 80y + 90z <=300

     求める式:          max(5x+4y+3z)