C# TaskRun with parameter and return

====================

private bool IsSkipInput(string content)

{

    if (skipInput == null) return false;

    // skip if match the pattern

    if (skipInput.isTrue(content)) return true;

    return false;

}

====================

public async void matchText(string content, List<Match> matches)

{

    if (string.IsNullOrEmpty(pattern)) return;

    

    bool isSkipOK = await Task.Run<bool>(() => { return IsSkipInput(content); });

    if (isSkipOK)

    {

        return ;

    }

}

shell different between return and exit

1. return used in function, 

    shell will continue after return from function 

2. exit used in everywhere of shell, stop and exit shell immediately.

example:

#========================

function testreturn（）{

   echo "It will return 1"

   return 1

}

function testexit(){

   echo "It will exit 1"

   exit 1 

}

echo "start..."

testreturn

echo " after return "

testexit

echo " after exit"

#========================

#run result:

start...

It will return 1

after return 

It will exit 1

==========================

check file changed or not by md5 hash code

windows powershell command:

PS C:\Users\test> certutil -hashfile destfile.zip md5

MD5 hash (対象 destfile.zip):

f6cb78afe66b417cd3f79df8d1c86444 

CertUtil: -hashfile コマンドは正常に完了しました。

linux command:

> md5sum destfile.zip

 f6cb78afe66b417cd3f79df8d1c86444 destfile.zip

git clone -b branchname url

git clone -b branchname https://domainname/group/project.git 

git clone -b branchname https://userid:token@domainname/group/project.git 

Linux refresh .bashrc immediately source ~/.bashrc

 source ~/.bashrc 

linux shell setfacl /getfacl

$ setfacl --help

setfacl 2.2.51 -- set file access control lists Usage: setfacl [-bkndRLP] { -m|-M|-x|-X ... } file ... -m, --modify=acl modify the current ACL(s) of file(s) -M, --modify-file=file read ACL entries to modify from file -x, --remove=acl remove entries from the ACL(s) of file(s) -X, --remove-file=file read ACL entries to remove from file -b, --remove-all remove all extended ACL entries -k, --remove-default remove the default ACL --set=acl set the ACL of file(s), replacing the current ACL --set-file=file read ACL entries to set from file --mask do recalculate the effective rights mask -n, --no-mask don't recalculate the effective rights mask -d, --default operations apply to the default ACL -R, --recursive recurse into subdirectories -L, --logical logical walk, follow symbolic links -P, --physical physical walk, do not follow symbolic links --restore=file restore ACLs (inverse of `getfacl -R') --test test mode (ACLs are not modified) -v, --version print version and exit -h, --help this help text

#ex: $ setfacl -m u:testuser :rw test1.log

setfacl: Option -m incomplete

$ setfacl -m u:testuser:rw test1.log

$ getfacl test1.log

# file: test1.log # owner: ec2-user # group: ec2-user user::rw- user:ec2-user:rwx group::rw- mask::rwx other::r--

shell if and or

 

• && (AND) : if [ condition1 ] && [ condition2 ]; then 

       if [ -f $src/* ] && [ -d $dest ]; then 

          echo "there are files under $src"
          cp -rf $src/* $dest/

       else
          echo " directory $dest is not found, or no files under $src" 

       fi

• || (OR) : if [ condition1 ] || [ condition2 ]; then