Difference between revisions of "Sed (editor)"
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| − | <code>sed</code> utility is using for text processing, such as strings replacements. | + | {{lowercase}} |
| + | <code>[[wikipedia:sed]]</code> ([[1974]]) utility is using for text processing, such as strings replacements. | ||
| + | * Man: https://manpages.ubuntu.com/manpages/noble/en/man1/sed.1.html | ||
| + | * Man: https://man7.org/linux/man-pages/man1/sed.1p.html | ||
| + | sed /xxx/yyy/g | ||
| + | |||
| + | g - global | ||
| + | [[sed -i|-i]] -i[SUFFIX], --in-place[=SUFFIX] edit files in place (makes backup if SUFFIX supplied) | ||
| + | [[sed -e|-e]] | ||
| + | |||
| + | -E, -r, --regexp-extended use extended regular expressions in the script (for portability use [[POSIX -E]]). | ||
| + | |||
| + | [[brew install gnu-sed]] | ||
== Sed Basic examples == | == Sed Basic examples == | ||
| − | * Replace | + | * [[Replace]] all occurrences of TEXT_STRING (<code>/g</code>) |
| − | :: <code>sed -i s/OLD_TEXT_STRING/NEW_TEXT_STRING/ file.txt</code> | + | :: <code>[[sed -i]] s/OLD_TEXT_STRING/NEW_TEXT_STRING/g file.txt</code> |
| − | * [[Append]] a text (TEST_TO_APPEND_AT_BEGINNIG) at the beginning of a line: | + | * [[Append]] a text (TEST_TO_APPEND_AT_BEGINNIG) at the [[beginning]] of a line: |
:: <code>sed -i s/^/TEST_TO_APPEND_AT_BEGINNIG/ file.txt</code> | :: <code>sed -i s/^/TEST_TO_APPEND_AT_BEGINNIG/ file.txt</code> | ||
| − | * Append a text (TEST_TO_APPEND_AT_END) at the [[end of a line]] (<code>$</code>): | + | :: [[Append a space]] at the beginning of lines: |
| + | ::: <code>[[sed s/^./" "/]]</code> | ||
| + | |||
| + | * Append a text (TEST_TO_APPEND_AT_END) at the [[end of a line]] (<[[code]]>$</code>): | ||
:: <code>sed -i s/$/TEST_TO_APPEND_AT_END/ file.txt</code> | :: <code>sed -i s/$/TEST_TO_APPEND_AT_END/ file.txt</code> | ||
| Line 20: | Line 35: | ||
<pre>sed s/'^'/'\<code\>'/ | sed s/'$'/'\<\/code\>'/</pre> | <pre>sed s/'^'/'\<code\>'/ | sed s/'$'/'\<\/code\>'/</pre> | ||
| − | * Replace [[spaces]]: | + | sed s/^/"[["/ | sed s/$/"]]"/ |
| − | + | ||
| + | * Add * at the beginning of the line: | ||
| + | ::<code>[[sed]] s/^/"*"/ </code> | ||
| + | |||
| + | * Replace [[spaces]]: | ||
| + | :<code>[[sed]] s/' '//g</code> | ||
| − | == Related | + | * Delete characters before a pattern |
| + | [[sed -e]] 's/....yourtext/ yourtext/g' file.txt | ||
| + | |||
| + | * sed -Ei 's/^# deb-src /deb-src /' [[/etc/apt/sources.list]] | ||
| + | |||
| + | == Help == | ||
| + | usage: sed script [-Ealn] [-i extension] [file ...] | ||
| + | sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...] | ||
| + | |||
| + | == Related == | ||
* <code>[[awk]]</code> | * <code>[[awk]]</code> | ||
* <code>[[lineinfile (Ansible)]]</code> | * <code>[[lineinfile (Ansible)]]</code> | ||
* Concatenate lines on a file using <code>[[tr]]</code> | * Concatenate lines on a file using <code>[[tr]]</code> | ||
| − | * cat your_file.txt | [[while read]] i; do echo "YOUR_TEST $i"; done | + | * <code>cat your_file.txt | [[while read]] i; do echo "YOUR_TEST $i"; done</code> |
| − | * cat your_file.txt | [[while read]] i; do echo "$(date) $i"; done | + | * <code>cat your_file.txt | [[while read]] i; do echo "$(date) $i"; done</code> |
| + | * <code>[[sed -n]]</code> | ||
| + | * [[Chef: Editing a file]]: <code>[[replace_or_add]]</code> | ||
| + | * [[Redirection]]: [[double redirection]] | ||
| + | * [[file (Puppet)]] | ||
| + | * [[prepend]] | ||
| + | * [[kubectl patch]] | ||
| + | * [[gsub]] [[gwak]] | ||
| + | * <code>[[envsubst]]</code> | ||
== See also == | == See also == | ||
| + | * {{sed}} | ||
* {{vi}} | * {{vi}} | ||
* {{grep}} | * {{grep}} | ||
| − | |||
| − | |||
[[Category:Linux commands]] | [[Category:Linux commands]] | ||
Latest revision as of 14:42, 4 April 2024
wikipedia:sed (1974) utility is using for text processing, such as strings replacements.
- Man: https://manpages.ubuntu.com/manpages/noble/en/man1/sed.1.html
- Man: https://man7.org/linux/man-pages/man1/sed.1p.html
sed /xxx/yyy/g
g - global -i -i[SUFFIX], --in-place[=SUFFIX] edit files in place (makes backup if SUFFIX supplied) -e
-E, -r, --regexp-extended use extended regular expressions in the script (for portability use POSIX -E).
brew install gnu-sed
Contents
Sed Basic examples[edit]
- Replace all occurrences of TEXT_STRING (
/g)
sed -i s/OLD_TEXT_STRING/NEW_TEXT_STRING/g file.txt
sed -i s/^/TEST_TO_APPEND_AT_BEGINNIG/ file.txt
- Append a space at the beginning of lines:
- Append a text (TEST_TO_APPEND_AT_END) at the end of a line (<code>$):
sed -i s/$/TEST_TO_APPEND_AT_END/ file.txt
- Move N lines from text file to new file:
head -1000 input > output && sed -i '1,+999d' input[1]
- Add at the beginning and end of a sentence:
<code> and </code>
sed s/'^'/'\<code\>'/ | sed s/'$'/'\<\/code\>'/
sed s/^/" sed s/$/""/
- Add * at the beginning of the line:
sed s/^/"*"/
- Replace spaces:
sed s/' '//g
- Delete characters before a pattern
sed -e 's/....yourtext/ yourtext/g' file.txt
- sed -Ei 's/^# deb-src /deb-src /' /etc/apt/sources.list
Help[edit]
usage: sed script [-Ealn] [-i extension] [file ...]
sed [-Ealn] [-i extension] [-e script] ... [-f script_file] ... [file ...]
Related[edit]
awklineinfile (Ansible)- Concatenate lines on a file using
tr cat your_file.txt | while read i; do echo "YOUR_TEST $i"; donecat your_file.txt | while read i; do echo "$(date) $i"; donesed -n- Chef: Editing a file:
replace_or_add - Redirection: double redirection
- file (Puppet)
- prepend
- kubectl patch
- gsub gwak
envsubst
See also[edit]
sed, gsed,-n, -i,Ansible: replace,append,Chef: Editing a file,lineinfile- Editors:
vi, vim,sed,awk, emacs,lineinfile (Ansible), Atom,paste, Neovim, Rider,visudo, vipw,update-alternatives,nano,more, less,.vimrc,set (vi)zed ack, ag, grep,egrep, fgrep,agrep,ngrep,pgrep,awk,sed,strings,tr,tail,mtail,git grep,wc,uniq,LogQL,findstr (Windows),rg, git-grep, cut
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