WebAdd a comment 4 Use sed with the -i option to edit the file in place. (A backup copy of the original will be saved as file.txt.bak ). sed -i.bak 's/^\ (HOST.*\)/#\1/g' file.txt To read the regular expression part: The ^ matches the beginning of the line. The () grabs the matching text into a temporary internal variable ( \1 ). WebComments in a Script Syntax A word or line beginning with # causes that word and all remaining characters on that line to be ignored. These lines aren't statements for the …
ruby on rails - Block commenting in Gedit? - Stack Overflow
WebJul 12, 2024 · 01:13 The Short Answer You can “uncomment a line” in a configuration file by removing the # at the start of the line. Or, to “comment out” a line, add a # character to the start of the line. (Note that some … WebMar 26, 2010 · By this syntax you are firing a sub-shell, a comment is suposed to improve redability without changing the code behavior at all, but the time to lauch/end this sub shell will make your code to be slower (to say the least), why not use only the colon in the start of a new line? – Rafareino May 26, 2014 at 14:13 4 frank synonym and antonym
Comment in Shell Scripts (How to include?) - Dispersed Net
WebThey also reduce the debugging effort of developers by commenting out the errors without deleting the whole source code. This post explains all the possible methods to comment out multiple lines at once in the vim editor. Method 1: Using the Line Number. Method 2: Using Highlight Block. Method 3: Using the Visual Mode. WebNov 12, 2004 · If you follow ZB's syntax exactly, you will sidestep most of the problems that arose from the : comment syntax. These were mostly unintended fd effects like this: : > /some/important/file. or unintended variable effects like this: : $ {variable:=garbage} But : is a command and it will succeed. WebThe first line tells Unix that the file is to be executed by /bin/sh. This is the standard location of the Bourne shell on just about every Unix system. If you're using GNU/Linux, /bin/sh is normally a symbolic link to bash (or, more recently, dash). The second line begins with a special symbol: #. This marks the line as a comment, and it is ... bleach odc 205