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Linux related functions section

Library file Function Sections Content help file
bmtLinux bmtLinuxFunc 401-410 Linux related bmtLinux.md

Section Four, Linux

  • 401 Check package installed
  • 402 Linux distribution family checker
  • 403 Set text editor $EDITOR if not set
  • 404 Log file handler
  • 405 Check if user exists
  • 406 Variable set and/or empty check
  • 407 Run script as root check
  • 408 Check if command exists in system
  • 409 system information
  • 410 Check if a named process is currently running

Sub-Sections

401 Check package installed

Keyword is checkpac.

  1. Param $2 package name
  2. Param $3 type of linux distro (1 for pacman based, 2 for debian based, 3 for rpm based)
  3. Param $4 to display message or not include "MES" for verbose output.
  4. Returns 0 for installed , 2 for not installed, returns 52 for unknown distro type.
bmtLinuxFunc  checkpac "firefox"  2  "MES"

402 Linux distro family checker

bmtLinuxFunc distrocheck

Returns 2-7 for known distro family groups or 52 for unknown. (2 redhat based, 3 fedora based, 4 debian based, 5 pacman based, 6 gentoo based , 7 slackware based.)

403 Is text editor variable $EDITOR set?

bmtLinuxFunc isTextEdSet

returns 0 if it was set, 2 if not and sets it to vi

404 log file handler

Creates a log file entry with standard formated date/time stamp.

Option Option description
1 State valid states are EMERGENCY, ALERT, CRITICAL, ERROR,WARNING,NOTICE,INFO,DEBUG,OK,FAILED,PASSED returns 55 for invalid state
2 Message if blank message passed "-- empty log message" appended
3 Filename .log will be appended
4 Path path for log file
5 Echo if "MES" log message will also be echoed to console 
bmtLinuxFunc log "CRITICAL" "1201 alarm Executive overflow - no vacant areas" mylog /tmp/
bmtLinuxFunc log "CRITICAL" "1202 alarm Executive overflow - no core sets" mylog /tmp/
bmtLinuxFunc log "INFO" "62 Watchdog reset" mylog /tmp/ "MES"

405 Check if user exists

Check if user exist on system Returns 0 if exists, 2 if not.

bmtLinuxFunc user "gavin"
echo "$?"

406 Check if variable is set and is empty

Returns 0 if set and non-empty, 2 if set and empty , 3 if unset

bmtLinuxFunc isvarempty variable_name
echo "$?"

407 Run Script as root check

Returns 2 if not running as root

bmtLinuxFunc runasroot

408 Check if command exists in system

Returns 2 if command does not exist on system.

bmtLinuxFunc iscommand tput
echo "$?"

409 System information

Prints system information to console, tool: uname -a

bmtLinuxFunc sysinfo

410 Check if a named process is currently running

Returns 0 if process is running, 2 if not.

bmtLinuxFunc proccheck "firefox"
echo "$?"