Prepending text read from a file on the top of another file
132809
Variable in sed
100376
Using `\input` to insert a section of a document into another
150978
Outputting common lines from 2 files and uncommon lines from both the files in one output file
107685
Reading a file used by another process
24848
How to append text to an existing file in Java?
137678
Separating the preamble to another file
69177
Replace line M in file1 with line N in file2
41391
How to perform replacements defined in one file on another file
59846
Modify a file without creating another file
22590
How to insert text before the first line of a file?
26996
Concatenate two files and separate them with a newline
135626
Prepend text to beginning of string
144100
How to merge two files in corresponding row?
90242
How to insert the lines from a file into another file after a key word?
54155
Prepending a timestamp to each line of output from a command
158113
Move first N lines of output to end without using temporary file
102453
C function to insert text at particular location in file without over-writing the existing text