This is a diff of crontab.c providing a color change for comment lines for the `crontab -l` output. You can see a demo with the provided screenshot attached to this message too.
Note that the DEBIAN_HEADERS are not colorized. If you're interested, I can patch the code for this part too. I used space indentation only because the file mixes tabs and spaces indentation so I didn't know what was the right choice. I saw in the documentation that, in the future, cronie could be used instead of the vixie cron. Perhaps I should push such a feature in cronie instead? (Perhaps it's currently available in cronie, I didn't check.) -- Stéphane
--- crontab.c.orig 2016-02-18 01:12:36.253608497 +0100
+++ crontab.c 2016-02-18 01:18:31.655518325 +0100
@@ -33,6 +33,7 @@
#include <fcntl.h>
#include <libgen.h>
#include <signal.h>
+#include <stdio.h>
#include <sys/file.h>
#include <sys/stat.h>
#ifdef USE_UTIMES
@@ -48,6 +49,10 @@
#define NHEADER_LINES 3
+#define COMMENT_COLOR "\x1B[34m"
+#define RESET_COLOR "\033[0m"
+
+
enum opt_t { opt_unknown, opt_list, opt_delete, opt_edit, opt_replace };
#if DEBUGGING
@@ -302,6 +307,7 @@
char n[MAX_FNAME];
FILE *f;
int ch;
+ int new_line = 1;
#ifdef DEBIAN
int x;
char *ctnh;
@@ -345,8 +351,17 @@
}
}
#endif
- while (EOF != (ch = get_char(f)))
- putchar(ch);
+ while (EOF != (ch = get_char(f))){
+ if(new_line){
+ if(ch == '#'){
+ printf(COMMENT_COLOR);
+ }else{
+ printf(RESET_COLOR);
+ }
+ }
+ putchar(ch);
+ new_line = ch == '\n';
+ }
fclose(f);
}
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