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Linux 手册页字母索引

这个页面基于 man7.org 的字母索引页 做了站内整理。命令名和原始链接保持准确，说明、导航和分区提示改成中文，同时为了云端访问速度，默认只渲染当前字母分组。

索引条目
14971
字母分组
28
缓存时间
2026-04-22 10:30:54

手册分区说明

  • 1用户命令与常用可执行程序
  • 2系统调用接口
  • 3C 函数库与开发接口
  • 5文件格式、配置文件与约定
  • 7概览、约定、协议与杂项
  • 8系统管理命令

像 accept(2) 这样的写法，括号里的数字就是它所属的 man 分区。先看名字，再看分区，判断会更快。

使用方式

1. 先选字母

这页已经改成按字母查看，首屏不会再一次性加载全部条目，更适合云端访问。

2. 再看分区

同名条目可能出现在不同分区，例如普通命令、系统调用、POSIX 版本或库函数版本。

3. 需要原文就点进 man7

每个条目都保留了原始 man7 链接，适合继续阅读完整英文手册页。

4. 搜索只过滤当前分组

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字母导航

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当前分组 L
当前条目 728
总条目 14971
数据来源 本地缓存

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L
共 728 条
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l64a(3) C 函数库
在 long 整数与 base-64 表示之间转换
原文：convert between long and base-64
l64a(3p) POSIX 函数库
bit integer to a radix-64 ASCII string
labels.conf(5) 文件格式与约定
Performance Co-Pilot labels configuration
labs(3) C 函数库
compute the absolute value of an integer
labs(3p) POSIX 函数库
return a long integer absolute value
Landlock(7) 约定、概览与杂项
unprivileged access-control
landlock(7) 约定、概览与杂项
unprivileged access-control
last(1) 用户命令
list logins on the system
lastb(1) 用户命令
list logins on the system
lastcomm(1) 用户命令
print out information about previously executed commands.
lastlog(8) 系统管理命令
reports the most recent login of all users or of a given user
lastlog2(3) C 函数库
Y2038 safe version of lastlog library.
lastlog2(8) 系统管理命令
displays date of last login for all users or a specific one
latin1(7) 约定、概览与杂项
ISO/IEC 8859-1 character set encoded in octal, decimal, and hexadecimal
latin10(7) 约定、概览与杂项
ISO/IEC 8859-16 character set encoded in octal, decimal, and hexadecimal
latin2(7) 约定、概览与杂项
ISO/IEC 8859-2 character set encoded in octal, decimal, and hexadecimal
latin3(7) 约定、概览与杂项
ISO/IEC 8859-3 character set encoded in octal, decimal, and hexadecimal
latin4(7) 约定、概览与杂项
ISO/IEC 8859-4 character set encoded in octal, decimal, and hexadecimal
latin5(7) 约定、概览与杂项
ISO/IEC 8859-9 character set encoded in octal, decimal, and hexadecimal
latin6(7) 约定、概览与杂项
ISO/IEC 8859-10 character set encoded in octal, decimal, and hexadecimal
latin7(7) 约定、概览与杂项
ISO/IEC 8859-13 character set encoded in octal, decimal, and hexadecimal
latin8(7) 约定、概览与杂项
ISO/IEC 8859-14 character set encoded in octal, decimal, and hexadecimal
latin9(7) 约定、概览与杂项
ISO/IEC 8859-15 character set encoded in octal, decimal, and hexadecimal
lber-decode(3) C 函数库
OpenLDAP LBER simplified Basic Encoding Rules library routines for decoding
lber-encode(3) C 函数库
OpenLDAP LBER simplified Basic Encoding Rules library routines for encoding
lber-types(3) C 函数库
OpenLDAP LBER types and allocation functions
lchown(2) 系统调用
change ownership of a file
lchown(3p) POSIX 函数库
change the owner and group of a symbolic link
lckpwdf(3) C 函数库
get shadow password file entry
lcong48(3) C 函数库
generate uniformly distributed pseudo-random numbers
lcong48(3p) POSIX 函数库
random signed long integer generator
lcong48_r(3) C 函数库
generate uniformly distributed pseudo-random numbers reentrantly
ld(1) 用户命令
The GNU linker
ld.so(8) 系统管理命令
dynamic linker/loader
ldap(3) C 函数库
OpenLDAP Lightweight Directory Access Protocol API
ldap.conf(5) 文件格式与约定
LDAP 配置文件 / 环境变量
原文：LDAP configuration file/environment variables
ldapadd(1) 用户命令
LDAP modify entry and LDAP add entry tools
ldap_add(3) C 函数库
Perform an LDAP add operation
ldap_dup(3) C 函数库
Duplicate and destroy LDAP session handles
ldap_error(3) C 函数库
LDAP protocol error handling routines
ldapexop(1) 用户命令
issue LDAP extended operations
ldap_init(3) C 函数库
Initialize the LDAP library and open a connection to an LDAP server
ldap_init_fd(3) C 函数库
Initialize the LDAP library and open a connection to an LDAP server
ldap_initialize(3) C 函数库
Initialize the LDAP library and open a connection to an LDAP server
ldapmodify(1) 用户命令
LDAP modify entry and LDAP add entry tools
ldap_msgid(3) C 函数库
Wait for the result of an LDAP operation
ldap_open(3) C 函数库
Initialize the LDAP library and open a connection to an LDAP server
ldap_parse_sort_control(3) C 函数库
Decode the information returned from a search operation that used a server-side sort control
ldap_parse_vlv_control(3) C 函数库
Decode the information returned from a search operation that used a VLV (virtual list view) control
ldappasswd(1) 用户命令
change the password of an LDAP entry
ldap_sort(3) C 函数库
LDAP sorting routines (deprecated)
ldap_tls(3) C 函数库
LDAP TLS initialization routines
ldapurl(1) 用户命令
LDAP URL formatting tool
ldap_url(3) C 函数库
LDAP Uniform Resource Locator routines
ldapvc(1) 用户命令
LDAP verify credentials tool
ldattach(8) 系统管理命令
attach a line discipline to a serial line
ldconfig(8) 系统管理命令
configure dynamic linker run-time bindings
ldd(1) 用户命令
print shared object dependencies
ld_errno(3) C 函数库
LDAP protocol error handling routines
ldexp(3) C 函数库
multiply floating-point number by integral power of 2
ldexpf(3) C 函数库
multiply floating-point number by integral power of 2
ldexpl(3) C 函数库
multiply floating-point number by integral power of 2
ldif(5) 文件格式与约定
LDAP Data Interchange Format
ldiv(3) C 函数库
compute quotient and remainder of an integer division
ldiv(3p) POSIX 函数库
compute quotient and remainder of a long division
ldiv_t(3type) 数据类型
quotient and remainder of an integer division
le16toh(3) C 函数库
convert values between host and big-/little-endian byte order
le32toh(3) C 函数库
convert values between host and big-/little-endian byte order
le64toh(3) C 函数库
convert values between host and big-/little-endian byte order
leaveok(3x) 扩展函数 / curses
set curses output options
less(1) 用户命令
display the contents of a file in a terminal
lesskey(1) 用户命令
customize key bindings for less
lex(1p) POSIX 用户命令
generate programs for lexical tasks (DEVELOPMENT)
lexgrog(1) 用户命令
parse header information in man pages
lfind(3) C 函数库
linear search of an array
lfind(3p) POSIX 函数库
find entry in a linear search table
lgetxattr(2) 系统调用
retrieve an extended attribute value
libabigail(7) 约定、概览与杂项
Library to analyze and compare ELF ABIs
libblkid(3) C 函数库
block device identification library
libc(7) 约定、概览与杂项
overview of standard C libraries on Linux
libcap(3) C 函数库
capability data object manipulation
libdpkg(7) 约定、概览与杂项
Debian package manager C library
libdrop_ambient(7) 约定、概览与杂项
force application started with ambient capabilities to drop them
libexpect(3) C 函数库
programmed dialogue library with interactive programs
libgen.h(0p) POSIX 头文件
definitions for pattern matching functions
libmagic(3) C 函数库
Magic number recognition library
libnetlink(3) C 函数库
A library for accessing the netlink service
libnss_systemd.so.2(8) 系统管理命令
UNIX user and group name resolution for user/group lookup via Varlink
libpfm(3) C 函数库
a helper library to develop monitoring tools
libpsx(3) C 函数库
POSIX semantics for system calls
libsystemd(3) C 函数库
Functions for implementing services and interacting with systemd
libtracefs(3) C 函数库
Linux kernel trace file system library
libudev(3) C 函数库
API for enumerating and introspecting local devices
limits.conf(5) 文件格式与约定
configuration file for the pam_limits module
LINES(3x) 扩展函数 / curses
curses data types, constants, and global variables
link(1) 用户命令
call the link function to create a link to a file
link(1p) POSIX 用户命令
call link() function
link(2) 系统调用
make a new name for a file
link(3p) POSIX 函数库
link one file to another file
linkat(2) 系统调用
make a new name for a file
linkat(3p) POSIX 函数库
link one file to another file
linux32(8) 系统管理命令
change reported architecture in new program environment and/or set personality flags
linux64(8) 系统管理命令
change reported architecture in new program environment and/or set personality flags
lirc(4) 设备与特殊文件
lirc devices
list(3) C 函数库
implementation of a doubly linked list
LIST_EMPTY(3) C 函数库
implementation of a doubly linked list
list_empty(3) C 函数库
implementation of a doubly linked list
listen(2) 系统调用
listen for connections on a socket
listen(3p) POSIX 函数库
listen for socket connections and limit the queue of incoming connections
LIST_ENTRY(3) C 函数库
implementation of a doubly linked list
list_entry(3) C 函数库
implementation of a doubly linked list
LIST_FIRST(3) C 函数库
implementation of a doubly linked list
list_first(3) C 函数库
implementation of a doubly linked list
LIST_HEAD(3) C 函数库
implementation of a doubly linked list
list_head(3) C 函数库
implementation of a doubly linked list
LIST_INIT(3) C 函数库
implementation of a doubly linked list
list_init(3) C 函数库
implementation of a doubly linked list
LIST_NEXT(3) C 函数库
implementation of a doubly linked list
list_next(3) C 函数库
implementation of a doubly linked list
ll2_read_all(3) C 函数库
Reads all entries from database and calls the callback function for each entry.
llabs(3) C 函数库
compute the absolute value of an integer
llabs(3p) POSIX 函数库
return a long integer absolute value
lldiv(3) C 函数库
compute quotient and remainder of an integer division
lldiv(3p) POSIX 函数库
compute quotient and remainder of a long division
lldiv_t(3type) 数据类型
quotient and remainder of an integer division
lloadd(8) 系统管理命令
LDAP Load Balancer Daemon
lloadd.conf(5) 文件格式与约定
configuration file for lloadd, the stand-alone LDAP daemon
llrint(3) C 函数库
round to nearest integer
llrint(3p) POSIX 函数库
round to the nearest integer value using current rounding direction
llrintf(3p) POSIX 函数库
round to the nearest integer value using current rounding direction
llrintl(3p) POSIX 函数库
round to the nearest integer value using current rounding direction
llround(3p) POSIX 函数库
round to nearest integer value
llroundf(3p) POSIX 函数库
round to nearest integer value
llroundl(3p) POSIX 函数库
round to nearest integer value
llseek(2) 系统调用
reposition read/write file offset
ln(1) 用户命令
make links between files
ln(1p) POSIX 用户命令
link files
lnstat(8) 系统管理命令
unified linux network statistics
loader.conf(5) 文件格式与约定
Configuration file for systemd-boot
loadkeys(1) 用户命令
load keyboard translation tables
load_policy(8) 系统管理命令
load a new SELinux policy into the kernel
loadunimap(8) 系统管理命令
load the kernel unicode-to-font mapping table
locale(1) 用户命令
get locale-specific information
locale(1p) POSIX 用户命令
specific information
locale(5) 文件格式与约定
describes a locale definition file
locale(7) 约定、概览与杂项
description of multilanguage support
locale.conf(5) 文件格式与约定
Configuration file for locale settings
localectl(1) 用户命令
Control the system locale and keyboard layout settings
localtime(3) C 函数库
transform date and time to broken-down time or ASCII
localtime(5) 文件格式与约定
Local timezone configuration file
localtime_r(3) C 函数库
transform date and time to broken-down time or ASCII
locate(1) 用户命令
list files in databases that match a pattern
lock(2) 系统调用
未实现的系统调用
原文：unimplemented system calls
lockf(3) C 函数库
apply, test or remove a POSIX lock on an open file
lockf(3p) POSIX 函数库
record locking on files
log(3) C 函数库
natural logarithmic function
log(3p) POSIX 函数库
natural logarithm function
log10(3) C 函数库
base-10 logarithmic function
log10(3p) POSIX 函数库
base 10 logarithm function
log10f(3) C 函数库
base-10 logarithmic function
log10f(3p) POSIX 函数库
base 10 logarithm function
log10l(3) C 函数库
base-10 logarithmic function
log10l(3p) POSIX 函数库
base 10 logarithm function
log1p(3) C 函数库
logarithm of 1 plus argument
log1p(3p) POSIX 函数库
compute a natural logarithm
log1pf(3) C 函数库
logarithm of 1 plus argument
log1pf(3p) POSIX 函数库
compute a natural logarithm
log1pl(3) C 函数库
logarithm of 1 plus argument
log1pl(3p) POSIX 函数库
compute a natural logarithm
log2(3) C 函数库
base-2 logarithmic function
log2(3p) POSIX 函数库
compute base 2 logarithm functions
log2f(3) C 函数库
base-2 logarithmic function
log2f(3p) POSIX 函数库
compute base 2 logarithm functions
log2l(3) C 函数库
base-2 logarithmic function
log2l(3p) POSIX 函数库
compute base 2 logarithm functions
LOGARCHIVE(5) 文件格式与约定
Performance Co-Pilot archive formats
logarchive(5) 文件格式与约定
Performance Co-Pilot archive formats
logb(3) C 函数库
get exponent of a floating-point value
logb(3p) POSIX 函数库
independent exponent
logbf(3) C 函数库
get exponent of a floating-point value
logbf(3p) POSIX 函数库
independent exponent
logbl(3) C 函数库
get exponent of a floating-point value
logbl(3p) POSIX 函数库
independent exponent
logf(3) C 函数库
natural logarithmic function
logf(3p) POSIX 函数库
natural logarithm function
logger(1) 用户命令
enter messages into the system log
LOGIMPORT(3) C 函数库
introduction to the library for importing data and creating a PCP archive
logimport(3) C 函数库
introduction to the library for importing data and creating a PCP archive
login(1) 用户命令
begin session on the system
login(3) C 函数库
write utmp and wtmp entries
login.defs(5) 文件格式与约定
shadow password suite configuration
loginctl(1) 用户命令
Control the systemd login manager
logind.conf(5) 文件格式与约定
Login manager configuration files
logl(3) C 函数库
natural logarithmic function
logl(3p) POSIX 函数库
natural logarithm function
logname(1) 用户命令
print user´s login name
logname(1p) POSIX 用户命令
return the user's login name
logout(3) C 函数库
write utmp and wtmp entries
logoutd(8) 系统管理命令
enforce login time restrictions
logrotate(8) 系统管理命令
logrotate ‐ rotates, compresses, and mails system logs
logrotate.conf(5) 文件格式与约定
logrotate ‐ rotates, compresses, and mails system logs
logsave(8) 系统管理命令
save the output of a command in a logfile
logwtmp(3) C 函数库
append an entry to the wtmp file
longjmp(3) C 函数库
performing a nonlocal goto
longname(3x) 扩展函数 / curses
get and set terminal attributes with curses
look(1) 用户命令
display lines beginning with a given string
loop(4) 设备与特殊文件
loop devices
losetup(8) 系统管理命令
set up and control loop devices
lp(1) 用户命令
print files
lp(1p) POSIX 用户命令
send files to a printer
lp(4) 设备与特殊文件
line printer devices
lpadmin(8) 系统管理命令
configure cups printers and classes on cups scheduler
lpc(8) 系统管理命令
line printer control program (deprecated)
lpinfo(8) 系统管理命令
show available devices or drivers (deprecated)
lpmove(8) 系统管理命令
move a job or all jobs to a new destination
lpoptions(1) 用户命令
display or set per-user printer options and defaults
lpq(1) 用户命令
show printer queue status
lpr(1) 用户命令
print files
lprm(1) 用户命令
cancel print jobs
lpstat(1) 用户命令
print cups status information
lrand48(3) C 函数库
generate uniformly distributed pseudo-random numbers
lrand48(3p) POSIX 函数库
random non-negative long integers
lrand48_r(3) C 函数库
generate uniformly distributed pseudo-random numbers reentrantly
lrint(3) C 函数库
round to nearest integer
lrint(3p) POSIX 函数库
round to nearest integer value using current rounding direction
lrintf(3) C 函数库
round to nearest integer
lrintf(3p) POSIX 函数库
round to nearest integer value using current rounding direction
lrintl(3) C 函数库
round to nearest integer
lrintl(3p) POSIX 函数库
round to nearest integer value using current rounding direction
lround(3) C 函数库
round to nearest integer
lround(3p) POSIX 函数库
round to nearest integer value
lroundf(3p) POSIX 函数库
round to nearest integer value
lroundl(3p) POSIX 函数库
round to nearest integer value
ls(1) 用户命令
list directory contents
ls(1p) POSIX 用户命令
list directory contents
lsattr(1) 用户命令
list ext2/ext3/ext4 file attributes
lsblk(8) 系统管理命令
list block devices
lscpu(1) 用户命令
display information about the CPU architecture
lsearch(3) C 函数库
linear search of an array
lseek(2) 系统调用
reposition read/write file offset
lseek(3p) POSIX 函数库
move the read/write file offset
lseek64(3) C 函数库
reposition 64-bit read/write file offset
lsfd(1) 用户命令
list file descriptors
lsinitrd(1) 用户命令
tool to show the contents of an initramfs image
lsipc(1) 用户命令
show information on IPC facilities currently employed in the system
lsirq(1) 用户命令
utility to display kernel interrupt information
lslocks(8) 系统管理命令
list local system locks
lslogins(1) 用户命令
display information about known users in the system
lsmem(1) 用户命令
list the ranges of available memory with their online status
lsmod(8) 系统管理命令
Show the status of modules in the Linux Kernel
lsns(8) 系统管理命令
list namespaces
lsof(8) 系统管理命令
list open files
lspci(8) 系统管理命令
list all PCI devices
lsusb(8) 系统管理命令
list USB devices
ltrace(1) 用户命令
A library call tracer
ltrace.conf(5) 文件格式与约定
Configuration file for ltrace(1).
lttng-crash(1) 用户命令
Recover and view LTTng 2 trace buffers in the event of a crash
lttng-help(1) 用户命令
Display help information about an LTTng command
lttng-list(1) 用户命令
List LTTng tracing sessions, domains, channels, and events
lttng-load(1) 用户命令
Load LTTng tracing session configurations
lttng-metadata(1) 用户命令
Manage an LTTng tracing session's metadata generation
lttng-rotate(1) 用户命令
Archive a tracing session's current trace chunk
lttng-save(1) 用户命令
Save LTTng tracing session configurations
lttng-status(1) 用户命令
Get the current LTTng tracing session's status
lttng-track(1) 用户命令
Add one or more entries to an LTTng resource tracker
lttng-untrack(1) 用户命令
Remove one or more entries from an LTTng resource tracker
lttng-view(1) 用户命令
View the traces of an LTTng tracing session
lttng(1) 用户命令
LTTng 2 tracer control command-line tool
lvchange(8) 系统管理命令
Change the attributes of logical volume(s)
lvconvert(8) 系统管理命令
Change logical volume layout
lvcreate(8) 系统管理命令
Create a logical volume
lvdisplay(8) 系统管理命令
Display information about a logical volume
lvextend(8) 系统管理命令
Add space to a logical volume
lvm-config(8) 系统管理命令
Display and manipulate configuration information
lvm-dumpconfig(8) 系统管理命令
Display and manipulate configuration information
lvm-lvpoll(8) 系统管理命令
Continue already initiated poll operation on a logical volume
lvm(8) 系统管理命令
LVM tools
lvm.conf(5) 文件格式与约定
Configuration file for LVM2
lvmconfig(8) 系统管理命令
Display and manipulate configuration information
lvmdiskscan(8) 系统管理命令
List devices that may be used as physical volumes
lvmdump(8) 系统管理命令
create lvm2 information dumps for diagnostic purposes
lvm_import_vdo(8) 系统管理命令
utility to import VDO volumes into a new volume group
lvmpersist(8) 系统管理命令
manage persistent reservations on a group of block devices
lvmreport(7) 约定、概览与杂项
LVM reporting and related features
lvmsadc(8) 系统管理命令
LVM system activity data collector
lvmsar(8) 系统管理命令
LVM system activity reporter
lvmthin(7) 约定、概览与杂项
LVM thin provisioning
lvmvdo(7) 约定、概览与杂项
Support for Virtual Data Optimizer in LVM
lvpoll(8) 系统管理命令
Continue already initiated poll operation on a logical volume
lvreduce(8) 系统管理命令
Reduce the size of a logical volume
lvremove(8) 系统管理命令
Remove logical volume(s) from the system
lvrename(8) 系统管理命令
Rename a logical volume
lvresize(8) 系统管理命令
Resize a logical volume
lvs(8) 系统管理命令
Display information about logical volumes
lvscan(8) 系统管理命令
List all logical volumes in all volume groups
lxc-attach(1) 用户命令
start a process inside a running container.
lxc-cgroup(1) 用户命令
manage the control group associated with a container
lxc-console(1) 用户命令
Launch a console for the specified container
lxc-device(1) 用户命令
manage devices of running containers
lxc-freeze(1) 用户命令
freeze all the container's processes
lxc-info(1) 用户命令
query information about a container
lxc-ls(1) 用户命令
list the containers existing on the system
lxc-start(1) 用户命令
run an application inside a container.
lxc-stop(1) 用户命令
stop the application running inside a container
lxc-top(1) 用户命令
monitor container statistics
lxc-usernet(5) 文件格式与约定
unprivileged user network administration file.
lxc-wait(1) 用户命令
wait for a specific container state
lxc(7) 约定、概览与杂项
linux containers
lxc.conf(5) 文件格式与约定
Configuration files for LXC.