#C0D - Twitter Hashtag

almost 5 years ago

#C0D #001D tac command is reverse of cat. It writes each file to stdout, last line first. If you want to reverse the whole file in vim you can do it by :%!tac

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Ash Ishh

@ash_ishh_

almost 5 years ago

#C0D #001C To find out number of lines selected in visual mode of vim you can execute 𝐠 𝐂𝐓𝐑𝐋-𝐆. Along with the number of lines it will display how many words and bytes are selected.

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Ash Ishh

@ash_ishh_

over 5 years ago

#C0D #001B Suppose there is a stream of output being printed in the terminal and you want to pause it to read or to capture the screenshot you can try 𝐂𝐭𝐫𝐥 + 𝐒 (XOFF control command) to freeze the output. Output can be resumed by 𝐂𝐭𝐫𝐥 + 𝐐 (XON Control Command)

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Ash Ishh

@ash_ishh_

about 6 years ago

#C0D #0018 If you are executing a command which contains your password or some other sensitive details and you don't want it logged in command history you can turn off history logging by $ set +o history #shell #linuxtips #unix

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Ash Ishh

@ash_ishh_

over 6 years ago

#C0D #0017 export PROMPT_COMMAND='history -a' Linux command history is saved by history command but it is dumped to .bash_history only when session is closed gracefully so to avoid history loss we can put above line in .bashrc

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タマ @tamalgys

over 6 years ago

神ゲーだった！ #C0D #MW #PS4share https://t.co/Jyl06TA7ok

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Ash Ishh

@ash_ishh_

over 6 years ago

#C0D #0016 You can use . to refer to the current line. 1) :g/foo/.,+2d will delete line with text foo and 2 lines after it 2) :g/foo/-3,.d will delete line with text foo and 3 lines before it 3) :g/foo/-1,+1d will delete line with foo, one line before it and one line after it

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Ash Ishh

@ash_ishh_

over 6 years ago

#C0D #0015 In vim rather than searching for the function definition or variable initialization you can type 'gd' in command mode which will go to the local declaration of the word where cursor is type 'gD' if you want to go to the global declaration.

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裏庭 @Xx_uraniwa_xX

over 6 years ago

7キル　サイバーアタック　オールキル　オーバーキル手震えた～w＃MW #C0D #蘇生させすぎ #PS4share https://t.co/5Hf8Gw7Y3r

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Ash Ishh

@ash_ishh_

almost 7 years ago

#C0D #0014 To remove all the lines in vim that contains certain string execute: :g/string/d To do the opposite i.e remove the lines that does not contains certain string execute: :v/string/d

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Ash Ishh

@ash_ishh_

almost 7 years ago

#C0D #0013 dd dd is a command-line utility for Unix and Unix-like operating systems, the primary purpose of which is to convert and copy files. dd stands for copy and convert (called dd because cc is already in use by C compiler).

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Ash Ishh

@ash_ishh_

about 7 years ago

#C0D #1012 Special shell parameters. The shell treats several parameters specially. These parameters may only be referenced; assignment to them is not allowed.

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Ash Ishh

@ash_ishh_

over 7 years ago

#C0D #1012 Force save the modified read-only file in vim. :w !sudo tee % w - write. ! - use external command. tee - write to std out and file argument both. % - variable for opened file in vim.

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Ash Ishh

@ash_ishh_

over 7 years ago

#C0D #1011 Killall sends a SIGTERM signal (if signal name is not specified explicitly) to all processes running any of the specified commands. Syntax: killall [options] command

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Ash Ishh

@ash_ishh_

over 7 years ago

#C0D #0010 prettify json file in vim :%!python -m json.tool

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Ash Ishh

@ash_ishh_

over 7 years ago

#C0D #000F read constantly updating file tail -F foo.txt -F: tracks changes to the file by filename and try to open the file if it's not present.

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Ash Ishh

@ash_ishh_

over 7 years ago

#C0D #000E delete col of csv file Command: cut -d, -f1 --complement tmp.csv > new_tmp.csv -d: delimiter -f: fields to return --complement: complement selected text Summary: Above command is selecting the 1st column with a delimiter, and complementing the result set.

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Ash Ishh

@ash_ishh_

almost 8 years ago

#C0D #000D less - It is the linux utility which can be used to read contents of text page by page. [Syntax] less [OPTIONS] [FILENAME] [Navigation] gg - Top G - Bottom f - Forward One Window b - Backward One Window q - Exit [Example] ~ ls | less -N 1 foo.txt 2 bar.txt

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Ash Ishh

@ash_ishh_

almost 8 years ago

#C0D #000C sudo and echo command does not work together if you have to redirect output of echo to root owned files you can execute sudo sh -c "echo 'bar' > /etc/foo.conf"

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Ash Ishh

@ash_ishh_

almost 8 years ago

#C0D #000B wget -c http://foo[.]com/bar.mp4 -c : continue getting a partially-downloaded file.This is useful when you want to finish up a dwnld started by a previous instance of Wget, or by another pgm. If you execute without c flag new instance download will be started.

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