WebYou can use them on the Unix command-line—or indeed on the command line of any OS where Perl is installed. There are many pages about Perl one-liners. This one is only … WebJan 17, 2015 · I tend to reach for perl one-liners when doing anything that involves manipulating line endings: perl -pe 'BEGIN {undef $/} s/\r\n//g' *.txt The key to making this work is the undef $/, which makes Perl read each file as one string, which you can then do a search-and-replace on. To strip bare \r as well, just tweak the regex:

Perl one-liners - Notes

WebNov 20, 2011 · The example above replaces any occurrence of the string “replace this” with the string “using that” on all text files inside the directory name given. So in summary, if you want to use the most powerful search and replace tools on the command line, and do it in the easiest form, use perl -p -i -e 'pattern' file and use it wisely. WebPerl one-liners cookbook In-place file editing In the examples presented so far, the output from perl was displayed on the terminal or redirected to another file. This chapter will discuss how to write back the changes to the input file (s) itself using the -i … how do rainbows occur

replace awk with a perl one liner (REGEXP and FS) - UNIX

WebPerl one-liners. Execute some Perl code from command line; Using double-quoted strings in Windows one-liners; Print lines matching a pattern (PCRE grep) Replace a substring with … .*?$SOMEVAR.*?li WebJun 27, 2012 · perl : replace multiline text between two marker points Hi there I just wondered if someone could give me some perl advice I have a bunch of text files used for a wiki that have common headings such as ---++ Title blah ---++ Summary blah ---++ Details Here is the multiline block of text I wish to 8. Shell Programming and Scripting how do rain work