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K Textersetzung - „““ durch „"“
K Textersetzung - „etc.“ durch „und weitere“
 
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For example, 3d deletes 3rd line and prints other lines as shown below.  
For example, 3d deletes 3rd line and prints other lines as shown below.  
  sed 3d thegeekstuff.txt  
  sed 3d thegeekstuff.txt  
  1. Linux - Sysadmin, Scripting etc.
  1. Linux - Sysadmin, Scripting und weitere
  2. Databases - Oracle, mySQL etc.
  2. Databases - Oracle, mySQL und weitere
  4. Security (Firewall, Network, Online Security etc)  
  4. Security (Firewall, Network, Online Security etc)  
  5. Storage  
  5. Storage  
Zeile 44: Zeile 44:
  8. Website Design  
  8. Website Design  
  9. Software Development  
  9. Software Development  
  10.Windows- Sysadmin, reboot etc.
  10.Windows- Sysadmin, reboot und weitere


==== Delete Starting from 3rd line and every 2nd line from there. ====
==== Delete Starting from 3rd line and every 2nd line from there. ====
  sed '3~2d' thegeekstuff.txt  
  sed '3~2d' thegeekstuff.txt  
  1.  
  1.  
* Linux - Sysadmin, Scripting etc.
* Linux - Sysadmin, Scripting und weitere
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  4.  
  4.  
* Security (Firewall, Network, Online Security etc)  
* Security (Firewall, Network, Online Security etc)  
Zeile 58: Zeile 58:
  8.  
  8.  
* Website Design  
* Website Design  
  10.Windows- Sysadmin, reboot etc.
  10.Windows- Sysadmin, reboot und weitere


==== Delete from 4th to 8th line from file. ====
==== Delete from 4th to 8th line from file. ====
  sed '4,8d' thegeekstuff.txt  
  sed '4,8d' thegeekstuff.txt  
  1.  
  1.  
* Linux - Sysadmin, Scripting etc.
* Linux - Sysadmin, Scripting und weitere
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  3.  
  3.  
* Hardware  
* Hardware  
  9.  
  9.  
* Software Development  
* Software Development  
  10.Windows- Sysadmin, reboot etc.
  10.Windows- Sysadmin, reboot und weitere


==== Delete the last line from input. ====
==== Delete the last line from input. ====
  sed '$d' thegeekstuff.txt  
  sed '$d' thegeekstuff.txt  
  1.  
  1.  
* Linux - Sysadmin, Scripting etc.
* Linux - Sysadmin, Scripting und weitere
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  3.  
  3.  
* Hardware  
* Hardware  
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==== Delete the line which matches the given pattern from input. ====
==== Delete the line which matches the given pattern from input. ====
  For example, the below command deletes the line which matches with "Sysadmin”.  
  For example, the below command deletes the line which matches with "Sysadmin".  


  sed /Sysadmin/d thegeekstuff.txt  
  sed /Sysadmin/d thegeekstuff.txt  
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  3.  
  3.  
* Hardware  
* Hardware  
Zeile 117: Zeile 117:
  sed '/Website/,$d' thegeekstuff.txt  
  sed '/Website/,$d' thegeekstuff.txt  
  1.  
  1.  
* Linux - Sysadmin, Scripting etc.
* Linux - Sysadmin, Scripting und weitere
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  3.  
  3.  
* Hardware  
* Hardware  
Zeile 134: Zeile 134:
  sed '/Storage/,+2d' thegeekstuff.txt  
  sed '/Storage/,+2d' thegeekstuff.txt  
  1.  
  1.  
* Linux - Sysadmin, Scripting etc.
* Linux - Sysadmin, Scripting und weitere
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  3.  
  3.  
* Hardware  
* Hardware  
Zeile 145: Zeile 145:
  9.  
  9.  
* Software Development  
* Software Development  
  10.Windows- Sysadmin, reboot etc.
  10.Windows- Sysadmin, reboot und weitere


==== Delete blank Line from a file using sed ====
==== Delete blank Line from a file using sed ====
Zeile 153: Zeile 153:
  sed '/^$/d' thegeekstuff.txt  
  sed '/^$/d' thegeekstuff.txt  
  1.  
  1.  
* Linux - Sysadmin, Scripting etc.
* Linux - Sysadmin, Scripting und weitere
  2.  
  2.  
* Databases - Oracle, mySQL etc.
* Databases - Oracle, mySQL und weitere
  3.  
  3.  
* Hardware  
* Hardware  
Zeile 170: Zeile 170:
  9.  
  9.  
* Software Development  
* Software Development  
  10.Windows- Sysadmin, reboot etc.
  10.Windows- Sysadmin, reboot und weitere




[[Kategorie:Sed]]
[[Kategorie:Sed]]

Aktuelle Version vom 28. April 2025, 10:47 Uhr

Zeilen löschen

Löschen [d]

Der nachfolgende Aufruf löscht alle Zeilen ab der (einschließlich) 4.

  • bis zum Dateiende:
sed '4,$d' test.txt
 1 Der Aufruf des Stream Editors besitzt immer das Format:
 2 
 3 sed 'Kommando' Dateiname

Das Entfernen aller Zeilen, die mit einem Leerzeichen beginnen, erledigt dieser Aufruf:

sed '/^ /d' test.txt
 10 Nummer Genau diese Zeile
 11 Start, Ende Alle Zeilen von "Start" bis "Ende"
 12 $ Symbolisiert die letzte Zeile
 13 RegEx Zeilen, die den Regulären Ausdruck enthalten
 14 1, RegEx Von Zeile 1 bis zur ersten Zeile, die RegEx enthält

Der delete-Befehl ist die Umkehrung des print-Befehls: Die bei der Bereichsauswahl (mittels RE oder explizit) selektierten Zeilen werden "gelöscht", also nicht ausgegeben.

sed '/isst/d' < sed-test.txt
  • Zeilen, die "isst" enthalten, werden nicht ausgegeben
sed '3d' < sed-test.txt
  • die dritte Zeile wird nicht ausgegeben

Beispiele

Lösche die Nte Zeile

‘Nd’ deletes the Nth line and prints the other lines.

sed ‘Nd’ filename

It reads the first line and places in its pattern buffer.

  • Check whether supplied command is true for this line, if true, deletes pattern space buffer and starts next cycle. i.e Read next line.
  • If supplied command doesnt true, as its normal behaviour it prints the content of the pattern space buffer.

For example, 3d deletes 3rd line and prints other lines as shown below.

sed 3d thegeekstuff.txt 
1. Linux - Sysadmin, Scripting und weitere 
2. Databases - Oracle, mySQL und weitere 
4. Security (Firewall, Network, Online Security etc) 
5. Storage 
6. Cool gadgets and websites 
7. Productivity (Too many technologies to explore, not much time available) 
8. Website Design 
9. Software Development 
10.Windows- Sysadmin, reboot und weitere

Delete Starting from 3rd line and every 2nd line from there.

sed '3~2d' thegeekstuff.txt 
1. 
  • Linux - Sysadmin, Scripting und weitere
2. 
  • Databases - Oracle, mySQL und weitere
4. 
  • Security (Firewall, Network, Online Security etc)
6. 
  • Cool gadgets and websites
8. 
  • Website Design
10.Windows- Sysadmin, reboot und weitere 

Delete from 4th to 8th line from file.

sed '4,8d' thegeekstuff.txt 
1. 
  • Linux - Sysadmin, Scripting und weitere
2. 
  • Databases - Oracle, mySQL und weitere
3. 
  • Hardware
9. 
  • Software Development
10.Windows- Sysadmin, reboot und weitere 

Delete the last line from input.

sed '$d' thegeekstuff.txt 
1. 
  • Linux - Sysadmin, Scripting und weitere
2. 
  • Databases - Oracle, mySQL und weitere
3. 
  • Hardware
4. 
  • Security (Firewall, Network, Online Security etc)
5. 
  • Storage
6. 
  • Cool gadgets and websites
7. 
  • Productivity (Too many technologies to explore, not much time available)
8. 
  • Website Design
9. 
  • Software Development

Delete the line which matches the given pattern from input.

For example, the below command deletes the line which matches with "Sysadmin". 
sed /Sysadmin/d thegeekstuff.txt 
2. 
  • Databases - Oracle, mySQL und weitere
3. 
  • Hardware
4. 
  • Security (Firewall, Network, Online Security etc)
5. 
  • Storage
6. 
  • Cool gadgets and websites
7. 
  • Productivity (Too many technologies to explore, not much time available)
8. 
  • Website Design
9. 
  • Software Development

Deletes the line from which matches the given pattern to end of the file.

sed '/Website/,$d' thegeekstuff.txt 
1. 
  • Linux - Sysadmin, Scripting und weitere
2. 
  • Databases - Oracle, mySQL und weitere
3. 
  • Hardware
4. 
  • Security (Firewall, Network, Online Security etc)
5. 
  • Storage
6. 
  • Cool gadgets and websites
7. 
  • Productivity (Too many technologies to explore, not much time available)

Deletes the line from which matches the given pattern and 2lines next to that.

sed '/Storage/,+2d' thegeekstuff.txt 
1. 
  • Linux - Sysadmin, Scripting und weitere
2. 
  • Databases - Oracle, mySQL und weitere
3. 
  • Hardware
4. 
  • Security (Firewall, Network, Online Security etc)
8. 
  • Website Design
9. 
  • Software Development
10.Windows- Sysadmin, reboot und weitere 

Delete blank Line from a file using sed

You can also remove blank lines with sed. 
  • The following sed example shows how to use sed and remove blank lines.
sed '/^$/d' thegeekstuff.txt 
1. 
  • Linux - Sysadmin, Scripting und weitere
2. 
  • Databases - Oracle, mySQL und weitere
3. 
  • Hardware
4. 
  • Security (Firewall, Network, Online Security etc)
5. 
  • Storage
6. 
  • Cool gadgets and websites
7. 
  • Productivity (Too many technologies to explore, not much time available)
8. 
  • Website Design
9. 
  • Software Development
10.Windows- Sysadmin, reboot und weitere