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delete first line from text file in Windows using sed

I am working on PHP file and want to delete the first line from a text file.

Here is my code:

shell_exec("C:\\cygwin64\\bin\\bash.exe --login -c \"sed '1d' $text_files_path/diffFile.txt\"");
shell_exec("C:\\cygwin64\\bin\\bash.exe --login -c 'sed '1d' $text_files_path/diffFile.txt'");
shell_exec("C:\\cygwin64\\bin\\bash.exe --login -c 'tail -n +2 $text_files_path/diffFile.txt'");
shell_exec("C:\\cygwin64\\bin\\bash.exe --login -c \"tail -n +2 '$text_files_path/diffFile.txt'\"");

But, nothing works!

Any idea please?

Solution

  • Your variable should be double-quoted to allow shell parameter expansion.

    Try this :

    shell_exec('C:\\cygwin64\\bin\\bash.exe --login -c "sed -i \"1d\" "$text_files_path"/diffFile.txt"');

    Note : I added the -i option that edit the file in place.