Changing text on a file using scripts [duplicate]
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Find and replace text within a file using commands
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I want to change the PASS_MIN_DAYS = (whatever value is set) to PASS_MIN_DAYS = 15 using a script.The file it's in is /etc/login.defs.
bash scripts text-processing text
edited Dec 6 at 20:35
dessert
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Ivan Mikhaylov
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Dec 6 at 23:37
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This question already has an answer here:
Find and replace text within a file using commands
7 answers
I want to change the PASS_MIN_DAYS = (whatever value is set) to PASS_MIN_DAYS = 15 using a script.The file it's in is /etc/login.defs.
bash scripts text-processing text
edited Dec 6 at 20:35
dessert
21.9k55997
asked Dec 6 at 20:00
Ivan Mikhaylov
11
marked as duplicate by wjandrea, Sergiy Kolodyazhnyy bash
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Dec 6 at 23:37
This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.
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This question already has an answer here:
Find and replace text within a file using commands
7 answers
I want to change the PASS_MIN_DAYS = (whatever value is set) to PASS_MIN_DAYS = 15 using a script.The file it's in is /etc/login.defs.
bash scripts text-processing text
edited Dec 6 at 20:35
dessert
21.9k55997
asked Dec 6 at 20:00
Ivan Mikhaylov
11
This question already has an answer here:
Find and replace text within a file using commands
7 answers
I want to change the PASS_MIN_DAYS = (whatever value is set) to PASS_MIN_DAYS = 15 using a script.The file it's in is /etc/login.defs.
This question already has an answer here:
Find and replace text within a file using commands
7 answers
bash scripts text-processing text
bash scripts text-processing text
edited Dec 6 at 20:35
dessert
21.9k55997
asked Dec 6 at 20:00
Ivan Mikhaylov
11
edited Dec 6 at 20:35
dessert
21.9k55997
asked Dec 6 at 20:00
Ivan Mikhaylov
11
edited Dec 6 at 20:35
dessert
21.9k55997
edited Dec 6 at 20:35
dessert
21.9k55997
edited Dec 6 at 20:35
dessert
21.9k55997
21.9k55997
asked Dec 6 at 20:00
Ivan Mikhaylov
11
asked Dec 6 at 20:00
Ivan Mikhaylov
11
asked Dec 6 at 20:00
Ivan Mikhaylov
11
11
marked as duplicate by wjandrea, Sergiy Kolodyazhnyy bash
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Dec 6 at 23:37
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I’d use sed like this:
sed '/^PASS_MIN_DAYS/s/[0-9]+/15/'
This replaces the number in the line beginning with “PASS_MIN_DAYS” with 15. To edit the file in place leaving a backup with the .bak extension, use the following command. By default you need root access to edit the file.
sed -i.bak '/^PASS_MIN_DAYS/s/[0-9]+/15/' /etc/login.defs
answered Dec 6 at 20:16
dessert
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1 Answer
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1 Answer
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I’d use sed like this:
sed '/^PASS_MIN_DAYS/s/[0-9]+/15/'
This replaces the number in the line beginning with “PASS_MIN_DAYS” with 15. To edit the file in place leaving a backup with the .bak extension, use the following command. By default you need root access to edit the file.
sed -i.bak '/^PASS_MIN_DAYS/s/[0-9]+/15/' /etc/login.defs
answered Dec 6 at 20:16
dessert
21.9k55997
add a comment |
I’d use sed like this:
sed '/^PASS_MIN_DAYS/s/[0-9]+/15/'
This replaces the number in the line beginning with “PASS_MIN_DAYS” with 15. To edit the file in place leaving a backup with the .bak extension, use the following command. By default you need root access to edit the file.
sed -i.bak '/^PASS_MIN_DAYS/s/[0-9]+/15/' /etc/login.defs
answered Dec 6 at 20:16
dessert
21.9k55997
add a comment |
I’d use sed like this:
sed '/^PASS_MIN_DAYS/s/[0-9]+/15/'
This replaces the number in the line beginning with “PASS_MIN_DAYS” with 15. To edit the file in place leaving a backup with the .bak extension, use the following command. By default you need root access to edit the file.
sed -i.bak '/^PASS_MIN_DAYS/s/[0-9]+/15/' /etc/login.defs
answered Dec 6 at 20:16
dessert
21.9k55997
I’d use sed like this:
sed '/^PASS_MIN_DAYS/s/[0-9]+/15/'
This replaces the number in the line beginning with “PASS_MIN_DAYS” with 15. To edit the file in place leaving a backup with the .bak extension, use the following command. By default you need root access to edit the file.
sed -i.bak '/^PASS_MIN_DAYS/s/[0-9]+/15/' /etc/login.defs
answered Dec 6 at 20:16
dessert
21.9k55997
edited Dec 6 at 20:31
answered Dec 6 at 20:16
dessert
21.9k55997
answered Dec 6 at 20:16
dessert
21.9k55997
answered Dec 6 at 20:16
dessert
21.9k55997
21.9k55997
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