diff options
| -rwxr-xr-x | bin/try | 19 | ||||
| -rw-r--r-- | man/man1/try.1 | 9 |
2 files changed, 20 insertions, 8 deletions
@@ -6,8 +6,9 @@ # failed. Designed for running from systems like cron(8) where blips and # short-term failures can be ignored. # -# -h gives help, -n sets the number of attempts (defaults to 3), -v gives you -# diagnostics on stdout. +# -h gives help, -v gives you diagnostics on stdout, -i sets an optional number +# of seconds between each attempt, -n sets the number of attempts (defaults to +# 3). # # Author: Tom Ryder <tom@sanctum.geek.nz> # Copyright: 2016 @@ -17,7 +18,7 @@ self=try # Print usage information usage() { - printf '%s: usage: %s [-hv] [-n ATTEMPTS] [--] COMMAND...\n' \ + printf '%s: usage: %s [-hv] [-i INTERVAL] [-n ATTEMPTS] [--] COMMAND...\n' \ "$self" "$self" } @@ -25,12 +26,16 @@ usage() { declare -i verbose verbose=0 +# Number of seconds to wait between instances +declare -i interval +interval=0 + # Number of attempts declare -i attc attc=3 # Process options -while getopts 'hvn:' opt ; do +while getopts 'hvi:n:' opt ; do case $opt in # -h: Print help @@ -44,6 +49,11 @@ while getopts 'hvn:' opt ; do verbose=1 ;; + # -i: Set the number of seconds between attempts + i) + interval=$OPTARG + ;; + # -n: Set the number of attempts n) attc=$OPTARG @@ -89,6 +99,7 @@ for (( atti = 1 ; atti <= attc ; atti++ )) ; do ret=$? ((verbose)) && printf '%s: Failure!\n' \ "$self" + sleep "$interval" fi done diff --git a/man/man1/try.1 b/man/man1/try.1 index 482872fb..380c0a29 100644 --- a/man/man1/try.1 +++ b/man/man1/try.1 @@ -3,14 +3,15 @@ .B try \- attempt a command up to a certain number of times until it succeeds .SH USAGE -.B try [-hv] [-n ATTEMPTS] [--] COMMAND... +.B try [-hv] [-i INTERVAL] [-n ATTEMPTS] [--] COMMAND... .SH DESCRIPTION Runs the given command up to a fixed number of times until it exits zero. If all attempts fail, writes buffered error output from all attempts to stderr. .P -Option -h gives help, option -v turns on verbose output, option -n specifies -the number of attempts; defaults to 3. Options may be terminated with --. The -remaining arguments are the command to run. +Option -h gives help, option -v turns on verbose output, option -i specifies an +optional number of seconds between attempts, and option -n specifies the number +of attempts; defaults to 3. Options may be terminated with --. The remaining +arguments are the command to run. .P $ try getmails $ try -v -n3 maybe |