# Sed command to replace any type of string in shell script in linux **URL:** \ **Category:** Forum\ **Tags:** Adabas-Natural, Adabas, Adabas-on-Mainframes, Adabas-on-Linux\ **Created:** [May 16, 2024, 11:12am UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833 "2024-05-16T11:12:42Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![Kiran\_Kumar\_Kunduru](https://avatars.discourse-cdn.com/v4/letter/k/eb9ed0/32.png) [@Kiran\_Kumar\_Kunduru](https://techcommunity.softwareag.com/u/Kiran_Kumar_Kunduru)\ **Post date:** [May 16, 2024, 11:12am UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/1 "2024-05-16T11:12:42Z")
Hi Team, I am trying to replace string like below with sed command, but I am not able to replace with new string. EX: old\_String : watt.server.http.Content-Security-Policy=default-src \‘self’\ \*.abc.com _._.abe.com New\_Sting: watt.server.http.Content-Security-Policy=default-src ‘self’ \*.abe.com _._.abc.com sed -i “s~$old\_String ~$New\_Sting~g” filename.txt The above sed command is working for other string but not for the above sting. in old\_string \‘self’\ will vary each time, ex: \'self’\, \\\‘self’\\\. The \ can be any number of times it wary each time. Any inputs would be very helpful. ---
**Author:** ![Hilmar\_Wantje6](https://avatars.discourse-cdn.com/v4/letter/h/91b2a8/32.png) [@Hilmar\_Wantje6](https://techcommunity.softwareag.com/u/Hilmar_Wantje6)\ **Post date:** [May 16, 2024, 1:51pm UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/2 "2024-05-16T13:51:33Z")
Hi. i tried in vain as You did. but could help this construct?: cat filename.txt # see the content in old\_string .self.\ will vary each time, ex: 'self., \.self.\. The \ can be a 2 in old\_string .self.\ will vary each time, ex: 'self., \.self.\ZZ cat filename.txt | tr -d '' # tr is “translate character” tr: Warning: Rückschrägstrich () ohne Fluchtzeichen am Ende der Zeichenkette ist nicht portabel in old\_string .self. will vary each time, ex: 'self., .self… The can be a 2 in old\_string .self. will vary each time, ex: 'self., .self.ZZ despite of the warning i got rid of all slashes regards Hilmar ---
**Author:** ![Hilmar\_Wantje6](https://avatars.discourse-cdn.com/v4/letter/h/91b2a8/32.png) [@Hilmar\_Wantje6](https://techcommunity.softwareag.com/u/Hilmar_Wantje6)\ **Post date:** [May 16, 2024, 1:54pm UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/3 "2024-05-16T13:54:08Z")
oops. my original file content multiple slashes in old\_string .self.\ will vary each time, ex: 'self., \.self.\. The \ can be a 2 in old\_string .self.\ will vary each time, ex: 'self., \.self.\ZZ ---
**Author:** ![Hilmar\_Wantje6](https://avatars.discourse-cdn.com/v4/letter/h/91b2a8/32.png) [@Hilmar\_Wantje6](https://techcommunity.softwareag.com/u/Hilmar_Wantje6)\ **Post date:** [May 16, 2024, 1:54pm UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/4 "2024-05-16T13:54:54Z")
sending the message deletes multiple slashes ---
**Author:** ![Kiran\_Kumar\_Kunduru](https://avatars.discourse-cdn.com/v4/letter/k/eb9ed0/32.png) [@Kiran\_Kumar\_Kunduru](https://techcommunity.softwareag.com/u/Kiran_Kumar_Kunduru)\ **Post date:** [May 17, 2024, 7:09am UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/5 "2024-05-17T07:09:12Z")
HI Wantje, One more approach tried is below grep the exact string of this string=`grep "watt.server.http.Content-Security-Policy=" file_name` EX: output string=watt.server.http.Content-Security-Policy=default-src \‘self’\ \*.abc.com _._ .abe.com stLine=`grep -n "${string}" file_name` The above command will give the exact match line number. Next I am deleting the line number like below sed -i “${stLine}d” file\_name (This will delete the exact matched sting) Now just add the new string to the file\_name. echo “watt.server.http.Content-Security-Policy=default-src ‘self’ \*.abc.com _._ .abe.com” \>\> file\_name I hope this also should work right? Any inputs would be helpful. ---
**Author:** ![Hilmar\_Wantje6](https://avatars.discourse-cdn.com/v4/letter/h/91b2a8/32.png) [@Hilmar\_Wantje6](https://techcommunity.softwareag.com/u/Hilmar_Wantje6)\ **Post date:** [May 17, 2024, 7:40am UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/6 "2024-05-17T07:40:50Z")
Hi what is going wrong with tr command? your idea is not clear to me: \<\<\<\<\<\<\<\<\<\<\<\<\<\< i added 2 comments below ---
**Author:** ![Kiran\_Kumar\_Kunduru](https://avatars.discourse-cdn.com/v4/letter/k/eb9ed0/32.png) [@Kiran\_Kumar\_Kunduru](https://techcommunity.softwareag.com/u/Kiran_Kumar_Kunduru)\ **Post date:** [May 17, 2024, 7:53am UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/7 "2024-05-17T07:53:13Z")
I will also test your case and will let you know, the above one I tested so I updated here. Once I test it, I will let you know ---
**Author:** ![system](https://global.discourse-cdn.com/techcommunity/original/3X/c/d/cd19967bb605d28a72d77eb83a1cae22f3df2eb8.svg) [@system](https://techcommunity.softwareag.com/u/system)\ **Post date:** [November 13, 2024, 7:54am UTC](https://techcommunity.softwareag.com/t/sed-command-to-replace-any-type-of-string-in-shell-script-in-linux/295833/8 "2024-11-13T07:54:02Z")
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