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Category Archives: Sed Command
Sed tutorial in linux/unix with examples and use cases
sed is a stream editor.
1. sed workflow
2. hold space and pattern space explain
3. sed syntax
4. sed debug tool
5. sed example
sed add/del/replace … Continue reading
Posted in Sed Command, Text Processing
Tagged gnu sed, pattern/hold space, sed, sed examples
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How to convert a string to lowercase in Linux?
This section describes how to use sed, awk, TR commands to convert strings to lowercase in Linux Continue reading
Posted in Awk Command, Sed Command, Text Processing
Tagged convert lower, linux awk, sed, tr
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sed tutorial: sed replace
Sed replace, you can use the sed function: s, replace the text in the file. syntax: ➜ ~ sed ‘s/regexp/replacement/’ file Continue reading
Posted in Sed Command, Text Processing
Tagged sed, sed examples, sed replace
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sed tutorial: sed insert line before match
Sed insert a line before match, you can use the sed function: i, add a new line before the matched string. syntax: sed ‘/option/i newLine’ file Continue reading
Posted in Sed Command, Text Processing
Tagged sed, sed examples, sed insert line before match
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sed tutorial: sed add line after match
sed add line after match, you use sed function: a , to add a new line after the matched string. syntax: sed ‘/option/a newLine’ file Continue reading
Posted in Sed Command, Text Processing
Tagged sed, sed add line after match, sed examples
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How to find and replace specified string with sed in linux/unix
find and replace content in linux: Use the grep command and sed command to search and replace, Use the find command and sed command to find files and replace Continue reading
Posted in How to, Sed Command, Text Processing
Tagged find and grep, sed examples, sed replace
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sed tutorial: sed in-place editing(-i option) with examples
Sed -i option, in-place editing of files, and can edit the operation file while the terminal does not output the sed execution result. Continue reading
Posted in Sed Command, Text Processing
Tagged sed, sed in-place, sed tutorial
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How to remove lines with specific line number from text file with awk or sed in Linux/unix
Remove specific line numbers in linux/unix, use awk NR variable to delete a specific line numbers, use sed command action option “d” to delete a specific line numbers Continue reading
Posted in How to, Awk Command, Sed Command, Text Processing
Tagged awk examples, linux awk, sed examples
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sed tutorial: sed append command
The sed append command can add a new line before or after the specified matching line. We do this by using sed a and i options command. Continue reading
Posted in Sed Command, Text Processing
Tagged sed, sed append, sed examples, sed tutorial
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sed tutorial: sed address and address range(select lines) with examples
sed address and address range tutorial, by using addresses or address ranges, the sed command can apply certain actions to these address lines. Continue reading
Posted in Internet Technology, Sed Command, Text Processing
Tagged sed, sed address, sed examples, sed tutorial
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How to use sed to replace multiple patterns at once in linux/unix?
sed is a powerful streaming text editor, and replace pattern is one of the most used functions. This article introduces how to replace multiple patterns at once with sed. Continue reading
Posted in How to, Sed Command, Text Processing
Tagged replace multiple patterns, sed, sed examples
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How to remove the first line of a text file using the linux command line?
remove the first line: use awk NR variable, awk ‘{if(NR>1){print $0}}’ file ; use sed action option d, sed ‘1d’ file; use tail n option, tail -n +2 file Continue reading
Posted in Text Processing, Awk Command, How to, Sed Command
Tagged awk examples, remove line, sed examples, tail examples
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How to delete empty lines in a text file in linux/unix
To delete blank lines in a text file, you can use awk NF variable, awk regular expression, sed regular expression and grep -v ‘^$’ Continue reading
Posted in How to, Awk Command, Sed Command, Text Processing
Tagged awk examples, delete empty lines, grep examples, sed examples
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How to delete lines containing a specific string in a text file in linux/unix
Delete lines containing a specific string in a text file, we have three implementation methods: sed -i ‘/ pattern/d’, grep -v ‘pattern’ and awk ‘!/pattern/ {print $0}’ Continue reading
Posted in Text Processing, Awk Command, How to, Sed Command
Tagged awk examples, delete specific lines, grep examples, sed examples
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How to replace strings in files in the Linux command line
There are many ways to replace strings in Linux. You can use vim/vi to edit files, you can also use the sed command to replace, or you can search for all files to be replaced and replace them. Continue reading
Posted in How to, File & Directory, Sed Command, Text Processing, Vim Command
Tagged linux command, replace strings, sed
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