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| author | Tom Ryder <tom@sanctum.geek.nz> | 2017-04-05 20:06:39 +1200 |
|---|---|---|
| committer | Tom Ryder <tom@sanctum.geek.nz> | 2017-04-05 20:46:47 +1200 |
| commit | c8ab406749124d2e762ad5cf53963070113afd0f (patch) | |
| tree | 54c9721a06957ebe7098a211eea803b0230c0f5d /bin/clrd.sh | |
| parent | Handle POSIX correctness in ~/.bash_profile (diff) | |
| download | dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.tar.gz dotfiles-c8ab406749124d2e762ad5cf53963070113afd0f.zip | |
Apply runtime shebanging to POSIX shell
Diffstat (limited to 'bin/clrd.sh')
| -rw-r--r-- | bin/clrd.sh | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/bin/clrd.sh b/bin/clrd.sh new file mode 100644 index 00000000..bf239033 --- /dev/null +++ b/bin/clrd.sh @@ -0,0 +1,15 @@ +# Clear the screen and read a file as it's written line-by-line +self=clrd + +# Check we have an input file and are writing to a terminal +if [ "$#" -ne 1 ] ; then + printf >&2 '%s: Need input file\n' "$self" + exit 2 +elif ! [ -t 1 ] ; then + printf >&2 '%s: stdout not a terminal\n' "$self" + exit 2 +fi + +# Clear the screen and start tailing out the file +clear +tail -f -- "$@" |