Section 8 · System administration
System administration: B
System administration and privileged commands.
226 pages · B
- backupd.8 Cyrus IMAP documentation
- bacula_admin_selinux.8 Security Enhanced Linux Policy for the bacula_admin processes
- bacula_selinux.8 Security Enhanced Linux Policy for the bacula processes
- bacula_unconfined_script_selinux.8 Security Enhanced Linux Policy for the bacula_unconfined_script processes
- badblocks.8 search a device for bad blocks
- bashreadline.bt.8 Print bash commands system wide. Uses bpftrace/eBPF.
- basic_db_auth.8 Database auth helper for Squid
- basic_getpwnam_auth.8 Local Users auth helper for Squid
- basic_ldap_auth.8 LDAP authentication helper for Squid
- basic_ncsa_auth.8 NCSA httpd-style password file authentication helper for Squid
- basic_pam_auth.8 PAM Basic authentication helper for Squid
- basic_pop3_auth.8 POP3 authenticator for Squid
- basic_radius_auth.8 Squid RADIUS authentication helper
- basic_sasl_auth.8 Basic Authentication using SASL (specifically the cyrus-sasl authentication method)
- bcc-argdist.8 Trace a function and display a histogram or frequency count of its parameter values. Uses Linux eBPF/bcc.
- bcc-bashreadline.8 Print entered bash commands system wide. Uses Linux eBPF/bcc.
- bcc-bindsnoop.8 Trace bind() system calls.
- bcc-biolatency.8 Summarize block device I/O latency as a histogram.
- bcc-biolatpcts.8 Monitor IO latency distribution of a block device.
- bcc-biopattern.8 Identify random/sequential disk access patterns.
- bcc-biosnoop.8 Trace block device I/O and print details incl. issuing PID.
- bcc-biotop.8 Block device (disk) I/O by process top.
- bcc-bitesize.8 Summarize block device I/O size as a histogram − Linux eBPF/bcc.
- bcc-bpflist.8 Display processes currently using BPF programs and maps.
- bcc-bps.8 List all BPF programs. ’ps’ for BPF programs.
- bcc-cachestat.8 Statistics for linux page cache hit/miss ratios. Uses Linux eBPF/bcc.
- bcc-cachetop.8 Statistics for linux page cache hit/miss ratios per processes. Uses Linux eBPF/bcc.
- bcc-capable.8 Trace security capability checks (cap_capable()).
- bcc-cobjnew.8 Summarize object allocations in high-level languages.
- bcc-compactsnoop.8 Trace compact zone events. Uses Linux eBPF/bcc.
- bcc-cpudist.8 On- and off-CPU task time as a histogram.
- bcc-cpuunclaimed.8 Sample CPU run queues and calculate unclaimed idle CPU. Uses Linux eBPF/bcc.
- bcc-criticalstat.8 A tracer to find and report long atomic critical sections in kernel
- bcc-cthreads.8 Trace thread creation events in Java or pthreads.
- bcc-dbslower.8 Trace MySQL/PostgreSQL server queries slower than a threshold.
- bcc-dbstat.8 Collect histograms of MySQL/PostgreSQL query latencies.
- bcc-dcsnoop.8 Trace directory entry cache (dcache) lookups. Uses Linux eBPF/bcc.
- bcc-dcstat.8 Directory entry cache (dcache) stats. Uses Linux eBPF/bcc.
- bcc-deadlock.8 Find potential deadlocks (lock order inversions) in a running program.
- bcc-dirtop.8 File reads and writes by directory. Top for directories.
- bcc-drsnoop.8 Trace direct reclaim events. Uses Linux eBPF/bcc.
- bcc-execsnoop.8 Trace new processes via exec() syscalls. Uses Linux eBPF/bcc.
- bcc-exitsnoop.8 Trace all process termination (exit, fatal signal). Uses Linux eBPF/bcc.
- bcc-ext4dist.8 Summarize ext4 operation latency. Uses Linux eBPF/bcc.
- bcc-ext4slower.8 Trace slow ext4 file operations, with per-event details.
- bcc-filegone.8 Trace why file gone (deleted or renamed). Uses Linux eBPF/bcc.
- bcc-filelife.8 Trace the lifespan of short-lived files. Uses Linux eBPF/bcc.
- bcc-fileslower.8 Trace slow synchronous file reads and writes.
- bcc-filetop.8 File reads and writes by filename and process. Top for files.
- bcc-funccount.8 Count function, tracepoint, and USDT probe calls matching a pattern. Uses Linux eBPF/bcc.
- bcc-funcinterval.8 Time interval between the same function, tracepoint as a histogram.
- bcc-funclatency.8 Time functions and print latency as a histogram.
- bcc-funcslower.8 Trace slow kernel or user function calls.
- bcc-gethostlatency.8 Show latency for getaddrinfo/gethostbyname\[2\] calls. Uses Linux eBPF/bcc.
- bcc-hardirqs.8 Measure hard IRQ (hard interrupt) event time. Uses Linux eBPF/bcc.
- bcc-javacalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-javaflow.8 Print a flow graph of method calls in high-level languages.
- bcc-javagc.8 Trace garbage collection events in high-level languages.
- bcc-javaobjnew.8 Summarize object allocations in high-level languages.
- bcc-javastat.8 Activity stats from high-level languages.
- bcc-javathreads.8 Trace thread creation events in Java or pthreads.
- bcc-killsnoop.8 Trace signals issued by the kill() syscall. Uses Linux eBPF/bcc.
- bcc-klockstat.8 Traces kernel mutex lock events and display locks statistics. Uses Linux eBPF/bcc.
- bcc-ksnoop.8 tool for tracing kernel function entry/return showing arguments/return values
- bcc-kvmexit.8 Display the exit_reason and its statistics of each vm exit.
- bcc-llcstat.8 Summarize CPU cache references and misses by process. Uses Linux eBPF/bcc.
- bcc-mdflush.8 Trace md flush events. Uses Linux eBPF/bcc.
- bcc-memleak.8 Print a summary of outstanding allocations and their call stacks to detect memory leaks. Uses Linux eBPF/bcc.
- bcc-mountsnoop.8 Trace mount() and umount() syscalls. Uses Linux eBPF/bcc.
- bcc-mysqld_qslower.8 Trace MySQL server queries slower than a threshold.
- bcc-netqtop.8 Summarize PPS, BPS, average size of packets and packet counts ordered by packet sizes on each queue of a network interface.
- bcc-nfsdist.8 Summarize NFS operation latency. Uses Linux eBPF/bcc.
- bcc-nfsslower.8 Trace slow NFS file operations, with per-event details.
- bcc-nodegc.8 Trace garbage collection events in high-level languages.
- bcc-nodestat.8 Activity stats from high-level languages.
- bcc-offcputime.8 Summarize off-CPU time by kernel stack trace. Uses Linux eBPF/bcc.
- bcc-offwaketime.8 Summarize blocked time by off-CPU stack + waker stack. Uses Linux eBPF/bcc.
- bcc-oomkill.8 Trace oom_kill_process(). Uses Linux eBPF/bcc.
- bcc-opensnoop.8 Trace open() syscalls. Uses Linux eBPF/bcc.
- bcc-perlcalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-perlflow.8 Print a flow graph of method calls in high-level languages.
- bcc-perlstat.8 Activity stats from high-level languages.
- bcc-phpcalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-phpflow.8 Print a flow graph of method calls in high-level languages.
- bcc-phpstat.8 Activity stats from high-level languages.
- bcc-pidpersec.8 Count new processes (via fork()). Uses Linux eBPF/bcc.
- bcc-ppchcalls.8 Summarize ppc hcall counts and latencies.
- bcc-profile.8 Profile CPU usage by sampling stack traces. Uses Linux eBPF/bcc.
- bcc-pythoncalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-pythonflow.8 Print a flow graph of method calls in high-level languages.
- bcc-pythongc.8 Trace garbage collection events in high-level languages.
- bcc-pythonstat.8 Activity stats from high-level languages.
- bcc-rdmaucma.8 Trace RDMA Userspace Connection Manager Access Event. For Linux, uses BCC, eBPF.
- bcc-readahead.8 Show performance of read-ahead cache
- bcc-reset-trace.8 reset the state of tracing.
- bcc-rubycalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-rubyflow.8 Print a flow graph of method calls in high-level languages.
- bcc-rubygc.8 Trace garbage collection events in high-level languages.
- bcc-rubyobjnew.8 Summarize object allocations in high-level languages.
- bcc-rubystat.8 Activity stats from high-level languages.
- bcc-runqlat.8 Run queue (scheduler) latency as a histogram.
- bcc-runqlen.8 Scheduler run queue length as a histogram.
- bcc-runqslower.8 Trace long process scheduling delays.
- bcc-shmsnoop.8 Trace System V shared memory syscalls. Uses Linux eBPF/bcc.
- bcc-slabratetop.8 Kernel SLAB/SLUB memory cache allocation rate top. Uses Linux BPF/bcc.
- bcc-sofdsnoop.8 traces FDs passed by sockets
- bcc-softirqs.8 Measure soft IRQ (soft interrupt) event time. Uses Linux eBPF/bcc.
- bcc-solisten.8 Trace listening socket
- bcc-spfdsnoop.8 Trace FDs passed through unix sockets. Uses Linux eBPF/bcc.
- bcc-sslsniff.8 Print data passed to OpenSSL, GnuTLS or NSS. Uses Linux eBPF/bcc.
- bcc-stackcount.8 Count function calls and their stack traces. Uses Linux eBPF/bcc.
- bcc-statsnoop.8 Trace stat() syscalls. Uses Linux eBPF/bcc.
- bcc-swapin.8 Count swapins by process. Uses BCC/eBPF.
- bcc-syncsnoop.8 Trace sync() syscall. Uses Linux eBPF/bcc.
- bcc-syscount.8 Summarize syscall counts and latencies.
- bcc-tclcalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-tclflow.8 Print a flow graph of method calls in high-level languages.
- bcc-tclobjnew.8 Summarize object allocations in high-level languages.
- bcc-tclstat.8 Activity stats from high-level languages.
- bcc-tcpaccept.8 Trace TCP passive connections (accept()). Uses Linux eBPF/bcc.
- bcc-tcpcong.8 Measure tcp congestion state duration. Uses Linux eBPF/bcc.
- bcc-tcpconnect.8 Trace TCP active connections (connect()). Uses Linux eBPF/bcc.
- bcc-tcpconnlat.8 Trace TCP active connection latency. Uses Linux eBPF/bcc.
- bcc-tcpdrop.8 Trace kernel-based TCP packet drops with details. Uses Linux eBPF/bcc.
- bcc-tcplife.8 Trace TCP sessions and summarize lifespan. Uses Linux eBPF/bcc.
- bcc-tcpretrans.8 Trace or count TCP retransmits and TLPs. Uses Linux eBPF/bcc.
- bcc-tcprtt.8 Trace TCP RTT of established connections. Uses Linux eBPF/bcc.
- bcc-tcpstates.8 Trace TCP session state changes with durations. Uses Linux eBPF/bcc.
- bcc-tcpsubnet.8 Summarize and aggregate IPv4 TCP traffic by subnet.
- bcc-tcpsynbl.8 Show the TCP SYN backlog as a histogram. Uses BCC/eBPF.
- bcc-tcptop.8 Summarize TCP send/recv throughput by host. Top for TCP.
- bcc-tcptracer.8 Trace TCP established connections. Uses Linux eBPF/bcc.
- bcc-threadsnoop.8 Trace thread creation via pthread_create(). Uses BCC/eBPF.
- bcc-tplist.8 Display kernel tracepoints or USDT probes and their formats.
- bcc-trace.8 Trace a function and print its arguments or return value, optionally evaluating a filter. Uses Linux eBPF/bcc.
- bcc-ttysnoop.8 Watch output from a tty or pts device. Uses Linux eBPF/bcc.
- bcc-ucalls.8 Summarize method calls from high-level languages and Linux syscalls.
- bcc-uflow.8 Print a flow graph of method calls in high-level languages.
- bcc-ugc.8 Trace garbage collection events in high-level languages.
- bcc-uobjnew.8 Summarize object allocations in high-level languages.
- bcc-ustat.8 Activity stats from high-level languages.
- bcc-uthreads.8 Trace thread creation events in Java or pthreads.
- bcc-vfscount.8 Count VFS calls ("vfs\_\"). Uses Linux eBPF/bcc.
- bcc-vfsstat.8 Statistics for some common VFS calls. Uses Linux eBPF/bcc.
- bcc-virtiostat.8 Trace VIRTIO devices input/output statistics. Uses Linux eBPF/bcc.
- bcc-wakeuptime.8 Summarize sleep to wakeup time by waker kernel stack. Uses Linux eBPF/bcc.
- bcc-wqlat.8 Summarize kernel workqueue latency as a histogram.
- bcc-xfsdist.8 Summarize XFS operation latency. Uses Linux eBPF/bcc.
- bcc-xfsslower.8 Trace slow xfs file operations, with per-event details.
- bcfg2_selinux.8 Security Enhanced Linux Policy for the bcfg2 processes
- bfb-install.8 BFB installing script for BlueField SoC over rshim driver
- bind_selinux.8 Security Enhanced Linux Policy for the named processes
- biolatency.bt.8 Block I/O latency as a histogram. Uses bpftrace/eBPF.
- biosdecode.8 BIOS information decoder
- biosnoop.bt.8 Block I/O tracing tool, showing per I/O latency. Uses bpftrace/eBPF.
- biostacks.bt.8 Show disk I/O latency with initialization stacks. Uses bpftrace/eBPF.
- bitesize.bt.8 Show disk I/O size as a histogram. Uses bpftrace/eBPF.
- bitlbee_selinux.8 Security Enhanced Linux Policy for the bitlbee processes
- blkdeactivate.8 utility to deactivate block devices
- blkdiscard.8 discard sectors on a device
- blkid.8 locate/print block device attributes
- blkiomon.8 monitor block device I/O based o blktrace data
- blkmapd_selinux.8 Security Enhanced Linux Policy for the blkmapd processes
- blkmapd.8 pNFS block layout mapping daemon
- blkpr.8 run persistent reservations command on a device
- blktap_selinux.8 Security Enhanced Linux Policy for the blktap processes
- blktrace.8 generate traces of the i/o traffic on block devices
- blkzone.8 run zone command on a device
- blockdev.8 call block device ioctls from the command line
- blueman_selinux.8 Security Enhanced Linux Policy for the blueman processes
- bluetooth_helper_selinux.8 Security Enhanced Linux Policy for the bluetooth_helper processes
- bluetooth_selinux.8 Security Enhanced Linux Policy for the bluetooth processes
- bluetoothd.8 Bluetooth daemon
- bmc-config.8 configure IPMI values
- bmc-device.8 perform advanced BMC commands
- bmc-info.8 display BMC information
- bmc-watchdog.8 BMC watchdog timer daemon and control utility
- boinc_project_selinux.8 Security Enhanced Linux Policy for the boinc_project processes
- boinc_selinux.8 Security Enhanced Linux Policy for the boinc processes
- boltd_selinux.8 Security Enhanced Linux Policy for the boltd processes
- boltd.8 thunderbolt device managing system daemon
- booleans.8 Policy booleans enable runtime customization of SELinux policy
- boom.8 linux boot manager
- bootc-container-lint.8 Perform relatively inexpensive static analysis checks as part of a container build
- bootc-container.8 Operations which can be executed as part of a container build
- bootc-edit.8 Apply full changes to the host specification
- bootc-install-ensure-completion.8 Intended for use in environments that are performing an ostree−based installation, not bootc
- bootc-install-finalize.8 Execute this as the penultimate step of an installation using ‘install to−filesystem‘
- bootc-install-print-configuration.8 Output JSON to stdout that contains the merged installation configuration as it may be relevant to calling processes using ‘install to−filesystem‘ that in particular want to discover the desired root filesystem type from the container image
- bootc-install-to-disk.8 Install to the target block device
- bootc-install-to-existing-root.8 Install to the host root filesystem
- bootc-install-to-filesystem.8 Install to an externally created filesystem structure
- bootc-install.8 Install the running container to a target
- bootc-rollback.8 Change the bootloader entry ordering; the deployment under ‘rollback‘ will be queued for the next boot, and the current will become rollback. If there is a ‘staged‘ entry (an unapplied, queued upgrade) then it will be discarded
- bootc-status.8 Display status
- bootc-switch.8 Target a new container image reference to boot
- bootc-upgrade.8 Download and queue an updated container image to apply
- bootc-usr-overlay.8 Adds a transient writable overlayfs on ‘/usr‘ that will be discarded on reboot
- bootc.8 Deploy and transactionally in−place with bootable container images
- booth-keygen.8 generate authentication key
- booth.8 Linux manual page for booth.8.
- boothd_selinux.8 Security Enhanced Linux Policy for the boothd processes
- boothd.8 The Booth Cluster Ticket Manager.
- bootloader_selinux.8 Security Enhanced Linux Policy for the bootloader processes
- bootupd_selinux.8 Security Enhanced Linux Policy for the bootupd processes
- bounce.8 Postfix delivery status reports
- bpftool-btf.8 tool for inspection of BTF data
- bpftool-cgroup.8 tool for inspection and simple manipulation of eBPF progs
- bpftool-feature.8 tool for inspection of eBPF-related parameters for Linux kernel or net device
- bpftool-gen.8 tool for BPF code-generation
- bpftool-iter.8 tool to create BPF iterators
- bpftool-link.8 tool for inspection and simple manipulation of eBPF links
- bpftool-map.8 tool for inspection and simple manipulation of eBPF maps
- bpftool-net.8 tool for inspection of networking related bpf prog attachments
- bpftool-perf.8 tool for inspection of perf related bpf prog attachments
- bpftool-prog.8 tool for inspection and simple manipulation of eBPF progs
- bpftool-struct_ops.8 tool to register/unregister/introspect BPF struct_ops
- bpftool.8 tool for inspection and simple manipulation of eBPF programs and maps
- bpftrace.8 a high−level tracing language
- brctl_selinux.8 Security Enhanced Linux Policy for the brctl processes
- bridge.8 show / manipulate bridge addresses and devices
- brltty_selinux.8 Security Enhanced Linux Policy for the brltty processes
- btrace.8 perform live tracing for block devices
- btrecord.8 recreate IO loads recorded by blktrace
- btreplay.8 recreate IO loads recorded by blktrace
- bugzilla_script_selinux.8 Security Enhanced Linux Policy for the bugzilla_script processes