Perl - Reading a file and appending data to a line that is already existing
30328
How do I change, delete, or insert a line in a file, or append to the beginning of a file in Perl?
30174
How to append to a file with fstream fstream::app flag seems not to work
87797
How to replace a string in an existing file in Perl
122568
Can I read and write to the same file in Linux without overwriting it?
139283
update line based on previous line
50542
Remove lines from file up to a pattern, unless the pattern doesn't exist
54155
Prepending a timestamp to each line of output from a command
2379
How to read a file line-by-line into a list?
156785
How to concatenate multiple lines of output to one line?
43994
How can I redirect matching lines to a file, and non-matching lines to a different file?
116185
Why there are line breaks when PutAppend a string to file?
29659
How do I print all lines of a file with duplicate values in a certain column
54089
sed append after a line containing multiple unordered strings
75813
How do I read the contents of a small text file into a scalar in Perl?
98668
Bash: append text to last line of file
94061
How to append the first line at the end of each line of a file with Sed?
124823
Inserting a file into another file after the 1st occurrence of a pattern