linux命令杂记

fd . --type f # 文件类型 f, d ..
     --exec grep --color=always -nH  -e rust  \{\}  # -exec 对每个查找出来的文件路径执行命令
   #  其中{}代表路径, \{\} 是为了防止歧义

find -type f -exec grep --color=always -nH -e hello \{\} +  # 对于find 的-exec子命令, {}后面需要接上加号+ !!

grep --color=always -nH -i -e hello <FILE>
# -n 行号
# -H 文件名
# -e 正则表达式
# -i 忽略大小写
# --color=always 给查询结果上色
# --null 在文件名后面加上尾零.

sudo docker start `sudo docker ps -a -q`
sudo docker attach `sudo docker ps -aq`

$ du -h linux-note.org 

12K     linux-note.org

test `命令` = 'str' 
test `命令` = 'string' -a `命令` = 'string'
test `命令` = "string" -o `命令` = 'string'

# 判断当前平台是否是linux
test `uname -s` = 'Linux'
echo $? # 返回零表示无错误发生 

strace -f -s 65535 -i -t -T  -p <pid>    -o 输出文件 

strace -c <程序>

strace -c -p <PID>

% time     seconds  usecs/call     calls    errors syscall
------ ----------- ----------- --------- --------- ----------------
 49.27    0.009506           7      1281           clock_gettime
 18.75    0.003617           9       390           rt_sigprocmask
  9.05    0.001747           9       175           ioctl
  8.12    0.001567          17        92           write
  5.40    0.001042          23        45           pselect6
  2.48    0.000478          28        17           fcntl
  2.38    0.000459          13        35           rt_sigreturn
  1.37    0.000265           6        38           read
  1.37    0.000264           7        35           timerfd_settime
  1.29    0.000249          27         9           poll
  0.37    0.000071          35         2           kill
  0.16    0.000030          15         2           getpid
  0.00    0.000000           0         2           close
  0.00    0.000000           0         2           openat
------ ----------- ----------- --------- --------- ----------------
100.00    0.019295                  2125           total

objdump -D XXX | less 

$ ldd ./build/udpclient 

        linux-vdso.so.1 (0x00007ffcb2d85000)
        libstdc++.so.6 => /lib/x86_64-linux-gnu/libstdc++.so.6 (0x00007f4c64e2a000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f4c64e0f000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f4c64c1d000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f4c64ace000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f4c65024000)

src2html.pl --tab-width 4 --color --cross-reference \
            --navigator --line-numbers . <项目名>

ebook-convert html_out/index.html llvm_release_1.pdf \
        --use-profile-size \
        --paper-size a3 \
        --pdf-default-font-size 13 \
        --pdf-mono-font-size 13 \
        --margin-left 5 --margin-right 5 \
        --margin-top 5 --margin-bottom 5 \
        --page-breaks-before='/'  

sudo vim /etc/apt/source.list

sudo apt-get update

cat ~/.Xresources

xrdb  ~/.Xresources
# or: 
xrdb -merge ~/.Xresources 

! font and locale
xterm.locale: true
xterm.utf8: true
xterm*utf8Title: true
xterm*fontMenu*fontdefault*Label: Default
! 斜体在最后添加`:italic`
xterm*faceName: Sarasa Mono SC:antialias=true:style=Book
xterm*faceSize: 15
xterm*faceNameDoublesize: Sarasa Mono SC  ! Noto Sans CJK SC
xterm*renderFont: true
xterm*xftAntialias: true
xterm*cjk_width: true

! 窗口设置
! 窗口大小及位置
xterm*geometry: 80x25
xterm*dynamicColors: true
xterm*saveLines: 2048
xterm*scrollKey: true
xterm*scrollTtyOutput: false
xterm*scrollBar: true
xterm*rightScrollBar: true
xterm*jumpScroll: true
xterm*multiScroll: true
xterm*toolBar: false
xterm*Scrollbar*thickness: 10
xterm*Scrollbar*background: black
xterm*Scrollbar*foreground: gray90
xterm*background: rgb:1a/1a/1a
xterm*foreground: rgb:d6/d6/d6
xterm*cursorColor: rgb:d6/d6/d6

! 提供xterm-256color类型支持
! 如果修改后，没有得到正确的结果，说明你可能需要安装ncurses-term包来提供xterm-256color类型支持
xterm*termName: xterm-256color

! 启用 Sixel 图形支持
xterm*decTerminalID: vt340

! 配置选择文本自动复制到剪贴板
! https://askubuntu.com/questions/237942/how-does-copy-paste-work-with-xterm
xterm*selectToClipboard: true

! 启用“Ctrl+v”来复制
xterm*VT100.Translations: #override \
<Btn1Up>: select-end(CLIPBOARD,PRIMARY,CUT_BUFFER0) \n\
Ctrl <KeyPress> V: insert-selection(CLIPBOARD,PRIMARY,CUT_BUFFER0)

! 解决Alt键不好使
xterm*eightBitInput: false
xterm*altSendsEscape: true

! 配置主题
! -- Tango color scheme
xterm*color0: #2e3436
xterm*color1: #cc0000
xterm*color2: #4e9a06
xterm*color3: #c4a000
xterm*color4: #3465a4
xterm*color5: #75507b
xterm*color6: #0b939b
xterm*color7: #d3d7cf
xterm*color8: #555753
xterm*color9: #ef2929
xterm*color10: #8ae234
xterm*color11: #fce94f
xterm*color12: #729fcf
xterm*color13: #ad7fa8
xterm*color14: #00f5e9
xterm*color15: #eeeeec

chown -R sun:sun ./dir

cmake_minimum_required(VERSION 3.21)
project(word-count C)

# 设置编译器
set(CMAKE_C_STANDARD 99)
set(CMAKE_C_STANDARD_REQUIRED ON)
set(CMAKE_C_COMPILER clang)

add_compile_options(
"-ggdb" # gdb调试支持
"-m64"  
) 
# add_compile_definitions(LINE_COUNT) # 宏定义
## add_compile_definitions(MACRO_CONSTANT_NAME=macro_value)

# 生成 compile_commands.json 文件  for clangd
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

include_directories(./include) # 头文件目录

add_executable(test_strcmp.bin)
target_sources(test_strcmp.bin PRIVATE
  ./test_strcmp.c
  ./str_cmp.c
)

# target_compile_options(test_strcmp.bin PRIVATE -ggdb)
# target_include_directories(YourExecutableName PRIVATE include)


add_executable(tokenize.bin)
target_sources(tokenize.bin PRIVATE
  ./tokenize.c
  ./vector_char.c
)


add_executable(dictionary.bin)
target_sources(dictionary.bin PRIVATE
  ./dictionary.c
  ./vector_char.c
  ./vector_string.c
  ./str_cmp.c
)

# add_executable(wordcount.bin)
# target_sources(wordcount.bin PRIVATE
#   ./wordcount.c
#   ./vector_char.c
#   ./table_string.c
#   ./str_cmp.c
# )


add_executable(linecount.bin)
target_sources(linecount.bin PRIVATE
  ./linecount.c
  ./vector_char.c
  ./table_string.c
  ./str_cmp.c
)


add_executable(duplicate.bin)
target_sources(duplicate.bin PRIVATE
  ./dedup.c
  ./vector_char.c
  ./table_string.c
  ./duplicate.c
  ./str_cmp.c
)


add_executable(unit_test_vector_char.bin)
target_sources(unit_test_vector_char.bin PRIVATE
  ./unit_test_vector_char.c
  ./vector_char.c
)


# add_executable(unit_test_vector_string.bin)
# target_sources(unit_test_vector_string.bin PRIVATE
#   ./unit_test_vector_string.c
#   ./vector_string.c
#   ./str_cmp.c
# )

add_executable(unit_test_table_string.bin)
target_sources(unit_test_table_string.bin PRIVATE
  ./unit_test_table_string.c
  ./table_string.c
  ./vector_char.c
  ./str_cmp.c
)

cat /proc/mounts | grep cgroup

/sys/fs/cgroup