man1/pldd.1

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  25 .TH PLDD 1 2019-03-06 "GNU" "Linux User Manual"
  26 .SH NAME
  27 pldd \- display dynamic shared objects linked into a process
  28 .SH SYNOPSIS
  29 .nf
  30 .BI "pldd " "pid"
  31 .BI pldd " option"
  32 .fi
  33 .SH DESCRIPTION
  34 The
  35 .B pldd
  36 command displays a list of the dynamic shared objects (DSOs) that are
  37 linked into the process with the specified process ID (PID).
  38 The list includes the libraries that have been dynamically loaded using
  39 .BR dlopen (3).
  40 .SH OPTIONS
  41 .TP
  42 .BR \-? ", " \-\-help
  43 Display a help message and exit.
  44 .TP
  45 .B \-\-usage
  46 Display a short usage message and exit.
  47 .TP
  48 .BR \-V ", " \-\-version
  49 Display program version information and exit.
  50 .SH EXIT STATUS
  51 On success,
  52 .B pldd
  53 exits with the status 0.
  54 If the specified process does not exist,
  55 the user does not have permission to access
  56 its dynamic shared object list,
  57 or no command-line arguments are supplied,
  58 .B pldd
  59 exists with a status of 1.
  60 If given an invalid option, it exits with the status 64.
  61 .SH VERSIONS
  62 .B pldd
  63 is available since glibc 2.15.
  64 .SH CONFORMING TO
  65 The
  66 .B pldd
  67 command is not specified by POSIX.1.
  68 Some other systems
  69 .\" There are man pages on Solaris and HP-UX.
  70 have a similar command.
  71 .SH NOTES
  72 The command
  73 .PP
  74 .in +4n
  75 .EX
  76 lsof \-p PID
  77 .EE
  78 .in
  79 .PP
  80 also shows output that includes the dynamic shared objects
  81 that are linked into a process.
  82 .PP
  83 The
  84 .BR gdb (1)
  85 .I "info shared"
  86 command also shows the shared libraries being used by a process,
  87 so that one can obtain similar output to
  88 .B pldd
  89 using a command such as the following
  90 (to monitor the process with the specified
  91 .IR pid ):
  92 .PP
  93 .in +4n
  94 .EX
  95 $ \fBgdb \-ex "set confirm off" \-ex "set height 0" \-ex "info shared" \e\fP
  96         \fB\-ex "quit" \-p $pid | grep '^0x.*0x'\fP
  97 .EE
  98 .in
  99 .SH BUGS
 100 From glibc 2.19 to 2.29,
 101 .B pldd
 102 was broken: it just hung when executed.
 103 .\" glibc commit 1a4c27355e146b6d8cc6487b998462c7fdd1048f
 104 This problem was fixed in glibc 2.30, and the fix has been backported
 105 to earlier glibc versions in some distributions.
 106 .SH EXAMPLE
 107 .EX
 108 $ \fBecho $$\fP               # Display PID of shell
 109 1143
 110 $ \fBpldd $$\fP               # Display DSOs linked into the shell
 111 1143:   /usr/bin/bash
 112 linux\-vdso.so.1
 113 /lib64/libtinfo.so.5
 114 /lib64/libdl.so.2
 115 /lib64/libc.so.6
 116 /lib64/ld\-linux\-x86\-64.so.2
 117 /lib64/libnss_files.so.2
 118 .EE
 119 .SH SEE ALSO
 120 .BR ldd (1),
 121 .BR lsof (1),
 122 .BR dlopen (3),
 123 .BR ld.so (8)