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- #!/usr/bin/awk -f
- ################################################################
- #
- # Program Name : xusers
- # Date Created : 02-27-97
- # Author : Dan A. Mercer
- # Email : damercer@mmm.com
- # :
- # Description : Print list of users and applications signed on
- # : X workstations
- ################################################################
- # standard help message
- function help(hlpmsg) {
- basename = ARGV[0]
- sub(/.*\//,"",basename)
- printf "Format: %s [o=[hi]] [s=cdlp] [pattern]\n", basename
- print "Print list of users and applications signed on X workstations"
- print "NOTE: applicationname is truncated to 9 chars"
- print "Arguments:"
- print " o=[h|i] - Options"
- print " h - help - print this message"
- print " i - case insensitive pattern search"
- print " s=[c|d|l|p] - Sort Options"
- print " c - sort by command"
- print " d - sort by display name"
- print " l - sort by login name"
- print " p - sort by pid"
- print " pattern - regex pattern to search commands against"
-
- if (length(hlpmsg)) print hlpmsg
- exit
- }
- BEGIN {
- # process command line
- for (i=1;i<ARGC;i++) {
- if (ARGV[i] ~ /^o=/) {
- if (options)
- help("duplicate option string")
- options = ARGV[i]
- sub(/^o=/,"",options)
- if (options !~ /^[hi]$/)
- help("Invalid options " options)
- if ("h" == options)
- help("")
- else
- igncase = 1
- }
- else if (ARGV[i] ~ /^s=/) {
- if (sortorder)
- help("duplicate sort order string")
- sortorder = ARGV[i]
- sub(/^s=/,"",sortorder)
- if (sortorder !~ /^[cdlp]$/)
- help("Invalid sort order: '" sortorder "'")
- if ("p" == sortorder) {
- sort = "sort -kn2"
- }
- else if ("c" == sortorder) {
- # the 'b' option means ignore leading blanks
- sort = "sort -kb3"
- }
- else if ("l" == sortorder) {
- sort = "sort -kb1"
- }
- else {
- sort = "sort -kb4"
- }
- }
- else {
- if (pattern)
- help("duplicate pattern string")
- pattern = ARGV[i]
- }
- }
-
- # default is to sort by pid
- sort = (sort) ? sort : "sort -kn2"
-
- # check for igncase
- if (pattern && igncase)
- pattern = tolower(pattern)
-
- # set default pattern
- pattern = (pattern) ? pattern : ".*"
-
- cmd = "lsof -FpLcn -awP -iTCP:6000"
- # ||||| |||| |
- # ||||| |||| X servers use port 6000
- # ||||| |||don't list port names
- # ||||| ||suppress warning messages
- # ||||| |and all conditions
- # ||||| |options
- # |||||
- # ||||Internet addresses
- # |||command name
- # ||login name
- # |process id
- # Format string
- # Output consists of one record per pid, followed by newline
- # delimited fields for command, Login name, and network address
- # The pid is preceded by a 'p', command by a 'c',
- # Login name by an L, and network connection by an 'n'. There may
- # be multiple 'n' entries (for instance for vuewm)
-
- while ((cmd | getline field) > 0) {
- type = substr(field,1,1)
- sub("^.","",field)
- if ("p" == type) {
- # always output first
- pid = field
- PID[pid] = ++ct
- }
- else if ("c" == type) {
- # always output second
- XAPPL[pid] = field
- }
- else if ("L" == type) {
- # always output fourth
- USER[pid] = field
- }
- else if ("n" == type) {
- # may be multiple instances - we just use the last
- gsub(".*->|:6000","",field)
- DPY[pid] = field
- }
- }
- close(cmd)
-
- printf "%8s %5s %-9s %s\n","USER","PID","COMMAND","DISPLAY"
- for (pid in PID) {
- if (((igncase) ? tolower(XAPPL[pid]) : XAPPL[pid]) ~ pattern)
- printf "%8s %5d %-9s %s\n", USER[pid],pid,XAPPL[pid],DPY[pid] | sort
- }
-
- close(sort)
- exit
- }
-