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                        sysctlvalue
                                Table of Contents
                            
                            Prototype: sysctlvalue(key)
Return type: string
Description: Returns the sysctl value of key using /proc/sys.
Arguments:
key:string, in the range:.*
Example:
    vars:
      "tested" slist => { "net.ipv4.tcp_mem", "net.unix.max_dgram_qlen" };
      "values[$(tested)]" string => sysctlvalue($(tested));
Output:
  "values[net.ipv4.tcp_mem]" = "383133\t510845\t766266"
  "values[net.unix.max_dgram_qlen]" = "512"
Notes:
History: Was introduced in version 3.11.0 (2017)
See also: data_sysctlvalues()
