Getting access

• Access is controlled by user accounts and projects
• User accounts are created as a self service at my.csc.fi
• Access to services, like Puhti, Mahti and Allas is set by projects
• Projects are also created as self service by Project Managers, who
  • Need to fullfill Project Manager requirements
  • Can apply access to services for the project
  • Can invite users to projects
• Detailed info on docs.csc.fi

Counters of columns, rows and records

• awk fields are accessed through variables $1, $2, …, $(NF-1), $(NF).
  • NF (Number of Fields) is the number of fields on each line (# columns in row).

    $ echo "0 1:2,3 4" | awk -F"[:, ]" '{print "entries:" NF " first:" $1 " last:" $NF}'
    

  • $0 refers to the whole input row.

    awk -F":" '{printf "user: %s\n    whole line: %s\n", $1, $0}' /etc/passwd
    

  • printf enables formatted printout - we will discuss in more details later.
  • NR (Number of Records) is the number of input records (lines):

    $ awk 'END {print NR}' /etc/passwd
    

  • Much simpler still: wc -l /etc/passwd