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| author | Tom Ryder <tom@sanctum.geek.nz> | 2016-08-03 11:43:13 +1200 |
|---|---|---|
| committer | Tom Ryder <tom@sanctum.geek.nz> | 2016-08-03 11:43:13 +1200 |
| commit | 3e1906b43550efdc4cd18226b03bbd5d11c83433 (patch) | |
| tree | 70ee9ead23528df6220e820ba0bce57fbaeec57a | |
| parent | Add mktd(1) (diff) | |
| download | dotfiles-3e1906b43550efdc4cd18226b03bbd5d11c83433.tar.gz dotfiles-3e1906b43550efdc4cd18226b03bbd5d11c83433.zip | |
Have rndl(1) use a tempfile
| -rwxr-xr-x | bin/rndl | 14 | ||||
| -rw-r--r-- | man/man1/rndl.1 | 5 |
2 files changed, 14 insertions, 5 deletions
@@ -1,8 +1,16 @@ #!/bin/sh -# Print a random line from argument files +# Print a random line from input +td= +cleanup() { + rm -fr -- "$td" +} +for sig in EXIT HUP INT TERM ; do + trap cleanup "$sig" +done if [ "$#" -eq 0 ] ; then - printf >&2 'rndl: Need at least one filename\n' - exit 1 + td=$(mktd rndl) || exit + set -- "$td"/stdin + cat >"$td"/stdin fi lc=$(sed -- '$=;d' "$@") || exit ri=$(rndi 1 "$lc") || exit diff --git a/man/man1/rndl.1 b/man/man1/rndl.1 index 33aa6c87..e9f697b3 100644 --- a/man/man1/rndl.1 +++ b/man/man1/rndl.1 @@ -9,10 +9,11 @@ file .B rndl file1 file2 file3 .br +command | +.B rndl .SH DESCRIPTION .B rndl -prints a random line from the files given as arguments, using rndi(1) to choose -it. +prints a random line from its input, using rndi(1) to choose it. .SH SEE ALSO rndi(1), rnda(1), rndf(1), rndn(6) .SH AUTHOR |