Seq (Bash)
(Doorverwezen vanaf Seq)
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Use seq to generate a sequence of numbers. e.g., to be used in loops.
$ man seq
SEQ(1) User Commands SEQ(1)
NAME
seq - print a sequence of numbers
SYNOPSIS
seq [OPTION]... LAST
seq [OPTION]... FIRST LAST
seq [OPTION]... FIRST INCREMENT LAST
DESCRIPTION
Print numbers from FIRST to LAST, in steps of INCREMENT.
Mandatory arguments to long options are mandatory for short options too.
-f, --format=FORMAT
use printf style floating-point FORMAT
-s, --separator=STRING
use STRING to separate numbers (default: \n)
-w, --equal-width
equalize width by padding with leading zeroes
--help display this help and exit
--version
output version information and exit
If FIRST or INCREMENT is omitted, it defaults to 1. That is, an omitted INCREMENT defaults to 1 even when
LAST is smaller than FIRST. The sequence of numbers ends when the sum of the current number and INCREMENT
would become greater than LAST. FIRST, INCREMENT, and LAST are interpreted as floating point values. IN‐
CREMENT is usually positive if FIRST is smaller than LAST, and INCREMENT is usually negative if FIRST is
greater than LAST. INCREMENT must not be 0; none of FIRST, INCREMENT and LAST may be NaN. FORMAT must be
suitable for printing one argument of type 'double'; it defaults to %.PRECf if FIRST, INCREMENT, and LAST
are all fixed point decimal numbers with maximum precision PREC, and to %g otherwise.
AUTHOR
Written by Ulrich Drepper.
REPORTING BUGS
GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report seq translation bugs to <https://translationproject.org/team/>
COPYRIGHT
Copyright © 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later
<https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent per‐
mitted by law.
SEE ALSO
Full documentation at: <https://www.gnu.org/software/coreutils/seq>
or available locally via: info '(coreutils) seq invocation'
GNU coreutils 8.30 September 2019 SEQ(1)
Examples
$ seq 1 5 1 2 3 4 5
Distribute a task over multiple threads: START is 2. END is the length of the array, and STEP is 32, the number of threads:
for i in `seq 2 32 $((${#j[@]}-1))`
do
#
echo " Loop index: $i"
#
# Execute 32 threads
########################################
#
wp post update ${j[$i]} --post_name="" &
wp post update ${j[$i+1]} --post_name="" &
wp post update ${j[$i+2]} --post_name="" &
wp post update ${j[$i+3]} --post_name="" &
wp post update ${j[$i+4]} --post_name="" &
wp post update ${j[$i+5]} --post_name="" &
wp post update ${j[$i+6]} --post_name="" &
wp post update ${j[$i+7]} --post_name="" &
wp post update ${j[$i+8]} --post_name="" &
wp post update ${j[$i+9]} --post_name="" &
wp post update ${j[$i+10]} --post_name="" &
wp post update ${j[$i+11]} --post_name="" &
wp post update ${j[$i+12]} --post_name="" &
wp post update ${j[$i+13]} --post_name="" &
wp post update ${j[$i+14]} --post_name="" &
wp post update ${j[$i+15]} --post_name="" &
wp post update ${j[$i+16]} --post_name="" &
wp post update ${j[$i+17]} --post_name="" &
wp post update ${j[$i+18]} --post_name="" &
wp post update ${j[$i+19]} --post_name="" &
wp post update ${j[$i+20]} --post_name="" &
wp post update ${j[$i+21]} --post_name="" &
wp post update ${j[$i+22]} --post_name="" &
wp post update ${j[$i+23]} --post_name="" &
wp post update ${j[$i+24]} --post_name="" &
wp post update ${j[$i+25]} --post_name="" &
wp post update ${j[$i+26]} --post_name="" &
wp post update ${j[$i+27]} --post_name="" &
wp post update ${j[$i+28]} --post_name="" &
wp post update ${j[$i+29]} --post_name="" &
wp post update ${j[$i+30]} --post_name="" &
wp post update ${j[$i+31]} --post_name="" &
wait
#
done