Linux BASH command

最新推荐文章于 2024-07-15 06:00:00 发布

曹大夯

最新推荐文章于 2024-07-15 06:00:00 发布

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分类专栏： Ubuntu-Linux 文章标签： bash linux

本文链接：https://blog.youkuaiyun.com/Huntercao/article/details/36643849

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本文档记录了一些常用的Bash命令，包括构建日志显示及记录、格式化转换十六进制和十进制数字、文件中搜索和替换字符串、查看可执行文件结构等，适用于日常的脚本编写和命令行操作。

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Intro

This page records some bash command.

Build logs show in console and record in file

$ make 2>&1 | tee log.txt

Printf to convert hexadecimal and decimal integer numbers, simple calculator in terminal

$ printf "%d" 0x12974
76148
$ printf "0x%x" 76148
0x12974
$ echo $((3827+99))
3926
$ expr 3827 + 99
3926

size to show executable file structure

$ size ksstudio.exe
   text    data     bss     dec     hex filename
 562505   80896       0  643401   9d149 ksstudio.exe
$ size hdaudio.sys
size: hdaudio.sys: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section .text
size: hdaudio.sys: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section CODE
size: hdaudio.sys: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section .rdata
size: hdaudio.sys: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section .data
size: hdaudio.sys: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section .pdata
size: hdaudio.sys: Warning: Ignoring section flag IMAGE_SCN_MEM_NOT_PAGED in section .idata
   text    data     bss     dec     hex filename
 435078    2928       0  438006   6aef6 hdaudio.sys

Grep and replace strings in files

grep xxxx ./* -rl | xargs sed -i '' 's/xxxx/yyyy/g'

Note: In-place edits with sed on OS X

Grep inside the specific file type

huntercao$ find . -name '*.h' -print0 | xargs -0 grep XXYYZZZ -n

Note: The separator problem, Many Unix utilities are line oriented. These may work with xargs as long as the lines do not contain ', " or space. Some of the Unix utilities can use NUL as record separator (e.g. Perl (requires -0 and \0 instead of \n), locate (requires using -0), find (requires using -print0), grep (requires -z or -Z), sort (requires using -z)). Using -0 for xargs deals with the problem, but many Unix utilities cannot use NUL as separator (e.g. head, tail, ls, echo, sed, tar -v, wc, which).

Note:

Command line below:

huntercao$find . -name *.h

Get error:

find: xxxx.h: unknown primary or operator

Error reason:

* is expanded by the shell before the command-line is passed to find(1). If there's only 1 item in the directory, then it works. If there's more than one item in the directory, then it fails as the command-line options are no longer correct.

You have to escape the * so that find does the expansion internally.