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author | Tom Ryder <tom@sanctum.geek.nz> | 2016-08-09 17:15:40 +1200 |
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committer | Tom Ryder <tom@sanctum.geek.nz> | 2016-08-09 17:20:10 +1200 |
commit | 9fb350dc7c8cc5259ef24e0cb097031179fab1d6 (patch) | |
tree | 839dd0b8ee3f5323b1cd6aefa22b605b99437d62 /bin/rndi | |
parent | Mention nosls/sls flags in slsf(1) man page (diff) | |
download | dotfiles-9fb350dc7c8cc5259ef24e0cb097031179fab1d6.tar.gz dotfiles-9fb350dc7c8cc5259ef24e0cb097031179fab1d6.zip |
Improve commenting/exit handling in binscripts
Diffstat (limited to 'bin/rndi')
-rwxr-xr-x | bin/rndi | 9 |
1 files changed, 9 insertions, 0 deletions
@@ -2,13 +2,22 @@ # Get a low-quality random number between two integers. Depending on the awk # implementation, if you don't provide a third argument (a seed), you might get # very predictable random numbers based on the current epoch second. + BEGIN { + + # Seed with the third argument if given if (ARGV[3]) { srand(ARGV[3]) } + + # If not, just seed with what is probably a date/time-derived value else { srand() } + + # Print a random integer bounded by the first and second arguments print int(ARGV[1]+rand()*(ARGV[2]-ARGV[1]+1)) + + # Bail before processing any lines exit } |