Useful Commands/Text Processing - Revision history

Tacoball at 20:17, 3 April 2025

2025-04-03T20:17:58Z

← Older revision		Revision as of 20:17, 3 April 2025
Line 2:		Line 2:
	! 情境 \|\| 指令		! 情境 \|\| 指令
	\|-		\|-
	\| (改) BIG5 轉 UTF-8 \|\| <~~source~~ lang="bash">iconv -f CP950 -t UTF-8 big5file.txt</~~source~~>		\| (改) BIG5 轉 UTF-8 \|\| <syntaxhighlight lang="bash">iconv -f CP950 -t UTF-8 big5file.txt</syntaxhighlight>
	\|-		\|-
	\| (改) 搜尋 > 取代 > 存檔 - OSX/FreeBSD \|\|		\| (改) 搜尋 > 取代 > 存檔 - OSX/FreeBSD \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	# 取代後輸出 (測試與 pipe 用)		# 取代後輸出 (測試與 pipe 用)
	sed -e 's/搜尋RE/取代文字/' 檔名		sed -e 's/搜尋RE/取代文字/' 檔名
	# 取代後直接寫回檔案 (單檔自動化處理用)		# 取代後直接寫回檔案 (單檔自動化處理用)
	sed -i -e 's/搜尋RE/取代文字/' 檔名		sed -i -e 's/搜尋RE/取代文字/' 檔名
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| 讀取超大文字檔的第一百萬行<br>(效能視 sed, awk 版本略有差異) \|\|		\| 讀取超大文字檔的第一百萬行<br>(效能視 sed, awk 版本略有差異) \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	awk 'NR==1000000{print;exit}' 檔名		awk 'NR==1000000{print;exit}' 檔名
	sed -n '1000000{p;q;}' 檔名		sed -n '1000000{p;q;}' 檔名
	sed '1000000q;d' 檔名		sed '1000000q;d' 檔名
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| 讀取超大文字檔的其中幾行 \|\|		\| 讀取超大文字檔的其中幾行 \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	awk 'NR>=1000000{print} NR==1000050{exit}' 檔名		awk 'NR>=1000000{print} NR==1000050{exit}' 檔名
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| 輸出檔案並且顯示列號 \|\|		\| 輸出檔案並且顯示列號 \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	nl 3small.txt		nl 3small.txt
	cat -n 3small.txt		cat -n 3small.txt
	</~~source~~>		</syntaxhighlight>
	\|-		\|-
	\| Search Text \|\|		\| Search Text \|\|
	<~~source~~ lang="bash">		<syntaxhighlight lang="bash">
	grep 'Test' .		grep 'Test' .
	apk search tcl \| grep -e '^tcl'		apk search tcl \| grep -e '^tcl'
	pyenv install -l \| grep -E '^\s+3'		pyenv install -l \| grep -E '^\s+3'
	</~~source~~>		</syntaxhighlight>
	\|}		\|}

Tacoball at 08:43, 30 October 2020

2020-10-30T08:43:54Z

← Older revision		Revision as of 08:43, 30 October 2020
Line 34:		Line 34:
	grep 'Test' .		grep 'Test' .
	apk search tcl \| grep -e '^tcl'		apk search tcl \| grep -e '^tcl'
			pyenv install -l \| grep -E '^\s+3'
	</source>		</source>
	\|}		\|}

Tacoball at 06:13, 30 October 2020

2020-10-30T06:13:20Z

← Older revision		Revision as of 06:13, 30 October 2020
Line 33:		Line 33:
	<source lang="bash">		<source lang="bash">
	grep 'Test' .		grep 'Test' .
			apk search tcl \| grep -e '^tcl'
	</source>		</source>
	\|}		\|}

Tacoball at 04:26, 10 September 2020

2020-09-10T04:26:14Z

← Older revision		Revision as of 04:26, 10 September 2020
Line 31:		Line 31:
	\|-		\|-
	\| Search Text \|\|		\| Search Text \|\|
	\| grep 'Test' .		<source lang="bash">
			grep 'Test' .
			</source>
	\|}		\|}

Tacoball at 04:25, 10 September 2020

2020-09-10T04:25:50Z

← Older revision		Revision as of 04:25, 10 September 2020
Line 29:		Line 29:
	cat -n 3small.txt		cat -n 3small.txt
	</source>		</source>
			\|-
			\| Search Text \|\|
			\| grep 'Test' .
	\|}		\|}

Tacoball at 03:51, 14 August 2018

2018-08-14T03:51:53Z

← Older revision		Revision as of 03:51, 14 August 2018
Line 1:		Line 1:
	{\| class="~~code_convention~~"		{\| class="wikitable"
	! 情境 \|\| 指令		! 情境 \|\| 指令
	\|-		\|-

Tacoball: Created page with "{| class="code_convention" ! 情境 || 指令 |- | (改) BIG5 轉 UTF-8 || iconv -f CP950 -t UTF-8 big5file.txt |- | (改) 搜尋 > 取代 > 存..."

2018-08-14T03:51:38Z

Created page with "{| class="code_convention" ! 情境 || 指令 |- | (改) BIG5 轉 UTF-8 || <source lang="bash">iconv -f CP950 -t UTF-8 big5file.txt</source> |- | (改) 搜尋 > 取代 > 存..."

New page

{| class="code_convention"
! 情境 || 指令
|-
| (改) BIG5 轉 UTF-8 || <source lang="bash">iconv -f CP950 -t UTF-8 big5file.txt</source>
|-
| (改) 搜尋 > 取代 > 存檔 - OSX/FreeBSD ||
<source lang="bash">
# 取代後輸出 (測試與 pipe 用)
sed -e 's/搜尋RE/取代文字/' 檔名
# 取代後直接寫回檔案 (單檔自動化處理用)
sed -i -e 's/搜尋RE/取代文字/' 檔名
</source>
|-
| 讀取超大文字檔的第一百萬行<br>(效能視 sed, awk 版本略有差異) ||
<source lang="bash">
awk 'NR==1000000{print;exit}' 檔名
sed -n '1000000{p;q;}' 檔名
sed '1000000q;d' 檔名
</source>
|-
| 讀取超大文字檔的其中幾行 ||
<source lang="bash">
awk 'NR>=1000000{print} NR==1000050{exit}' 檔名
</source>
|-
| 輸出檔案並且顯示列號 ||
<source lang="bash">
nl 3small.txt
cat -n 3small.txt
</source>
|}