Bitsized AWK @mawkic

Learn AWK tweet by tweet Joined November 2020

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Bitsized AWK @mawkic

5 years ago

😎 TIL: ECMAScript / Javascript is influenced by AWK You're welcome #javascript 🤪

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Bitsized AWK @mawkic

5 years ago

@m_ou_se @spacekookie Do you still have the source? More bookkeeping in AWK: 😋

Bitsized AWK @mawkic

6 years ago

📚 Weekend Read 📚 Many years ago, @WardCunningham has written a beautiful AWK script to calculate the expenses of their skip trip. c2.com/doc/expense/ 💡 This is AWK at its best.

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Bitsized AWK @mawkic

5 years ago

@bphogan Try AWK 😇

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Bitsized AWK @mawkic

5 years ago

@gumnos 😎😄😄

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podquotes @podquotesio

5 years ago

"In terms of programming languages you get the most bang for the buck by learning AWK." - Brian Kernighan podquotes.io/quote/21

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Bitsized AWK @mawkic

5 years ago

🤓 How to print the first and the last line in a file? 🤓 awk 'NR==1; END{print}

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Bitsized AWK @mawkic

5 years ago

🤔 Do you want to write better and portable AWK scripts? Of course you want 😄 💡 GAWK (GNU AWK) supports --lint: > awk --lint 'and($1,$2)' file.txt awk: cmd. line:1: warning: `and' is a gawk extension

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Unix tool tip @UnixToolTip

5 years ago

awk is the coolest tool you don’t know portal.drewdevault.com/2021/05/03/awk…

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Bitsized AWK @mawkic

5 years ago

@gumnos Ha! Nice 👍

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Bitsized AWK @mawkic

5 years ago

🤔 Do you find your scripts with all these $1, $2 etc unreadable? 🤔 💡 Try giving them names: > docker ps | awk 'BEGIN{cont_id=1;image=2;}$image=="postgres"{print $cont_id}'

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Bitsized AWK @mawkic

5 years ago

🤔 Is there an AWK script you don't understand? Post it here ⬇️

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Bitsized AWK @mawkic

5 years ago

@UnixToolTip @jvlmdr And in case somebody wonders how this works: 🤓

Bitsized AWK @mawkic

5 years ago

🤔 How to delete empty lines from a file? 🤔 awk NF file.txt 💡 NF is the number of fields. If the number of fields is 0, AWK does not print the line, but in all other cases, the line is just printed.

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Bitsized AWK @mawkic

5 years ago

😎 While AWK does support if statements, patterns are often easier 💡

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🤓 New week new trick! 🤓 🤔 Replace a string in AWK: > awk '{gsub("bob", "anna")}1' file.txt ➡️ replace "bob" with "anna" ➡️ 1st param can be a regex (eg. /bob/) ➡️ 3rd param is optional (default $0 / line) 💡sed might be more suitable for such tasks 😉

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Bitsized AWK @mawkic

5 years ago

How to print only odd lines 🤓

Bitsized AWK @mawkic

6 years ago

> awk 'NR%2 {print $1}' file.txt anna chad 👨‍🎨 This prints odd lines, because %2 (modulo 2) returns 0 if the NR is divisible by 2. Since 0 is false, those lines are not printed. ➡️ The block is easy: just print the first column

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Bitsized AWK @mawkic

5 years ago

A third of the participants has known AWK for more than ten years 🤯

Bitsized AWK @mawkic

5 years ago

For how long have you known about AWK? #Linux #DevOps

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Bitsized AWK @mawkic

5 years ago

For how long have you known about AWK? #Linux #DevOps

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Bitsized AWK @mawkic

5 years ago

@sylv3on_ @TheCyberSecHub You're missing AWK 😉

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Bitsized AWK @mawkic

5 years ago

🤔 Did you know you can write a self-contained AWK script? 🤔 ➡️ Given a file: > cat script.awk #!/usr/bin/awk -f { print $0 } ➡️ Make it executable > chmod +x script.awk ➡️ And run it > ./script.awk file.txt 🐧 If only everything was so easy #Linux 🐧

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Bitsized AWK @mawkic

5 years ago

😍 Last July, @lexfridman interviewed Brian Kernighan, one of the authors of AWK. Listen to Brian explaining why AWK is still very useful today. youtube.com/watch?v=W5kr7X…