Sed Replacing String Based On Line Number Unix amp Linux Stack
145 You can specify line number in sed or NR number of record in awk awk NR 34 sub quot AAA quot quot BBB quot or use FNR file number record if you want to specify more than one file on the command line awk FNR 34 sub quot AAA quot quot BBB quot
SED Replace Line Number With New Text And Variables In Text File, sed i quot line number s new text quot quot file quot If you have values in new text that are so varied that you can t reliably pick a delimiter character that is guaranteed to not occur in your string then consider using the c command instead One may use the c change command to replace a line sed i quot line number c new text quot quot file quot
Command Substitution Sed Find And Replace From Line Number
This might work for you GNU sed sed n 3p filea sed i e 3r dev stdin e 3d fileb Output line 3 of filea to dev stdout Pipe that output to a second sed invocation that reads that line in on line 3 and then deletes the original line N B
Sed Replace Whole Line By Line Number Chaining Commands, sed replace whole line by line number chaining commands I need to replace a line in a file and struggling with it Firstly I need to find a string in the file store this line number as a variable and then replace the whole line using the variable with a
Replace Whole Line Containing A String Using Sed Stack Overflow
Replace Whole Line Containing A String Using Sed Stack Overflow, To replace whole line containing a specified string with the content of that line Text file Row 0 last time contacted 0 display name Mozart id 100 phonebook bucket alt 2 Row 1 last time contacted 0 display name Bach id 101 phonebook bucket alt 2 Single string
Useful Sed Command Use Cases In Linux Amir Masoud Sefidian
Bash Using Sed With A Variable Line Number And Variables In The Line
Bash Using Sed With A Variable Line Number And Variables In The Line So I have seen this ion Replace complete line getting number from variable which is pretty similar but in my case I am trying to use multiple variables one for the line number lineNo one for the text to replace transFormatted and the file to which it should be looking in OUTPUT FILE I ve tried dozens of combinations to try to get
Sed Tutorial Sed Replace LinuxCommands site
How to replace a whole line with sed Ask ion Asked 11 years 8 months ago Modified 1 year 2 months ago Viewed 460k times 230 Suppose I have a file with lines aaa bbb Now I would like to replace them with aaa xxx I can do that as follows sed quot s aaa bbb aaa xxx g quot Now I have a file with a few lines as follows Regex How To Replace A Whole Line With Sed Stack Overflow. sed s 0 9 1 amp 0 lt file Would replace the first occurrence of a series of one or more 1 decimal digits with amp 0 where amp is the text being replaced on each line Some sed implementations have a E option for using extended regular expressions ERE instead of basic ones BRE when you can use in place of 1 I d like to replace some numbers in a file with the result of a calculation using the found number and like to use sed on MacOSX I ve tried a lot of variants and now know I have to use E to use modern instead of basic regular expression Some examples echo quot bla 18934750 wwv flow id offset bla quot sed s wwv flow id offset blabla gives
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