TA的每日心情 | 开心
2016-5-12 14:23 |
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签到天数: 2 天 [LV.1]初来乍到
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This topic is about the While Loop on Unix/Linux bash environment. Following is the sample:3 W) u- Y l, x% B. s4 w" y
q4 q# K3 y; qwhile [ condition ]+ _) T( @( Y4 u
do
% I4 s& u' X) P. k3 e: E$ ~( o command1/ L. u# f) T- g: y w, C8 I' w9 m
command2
% Q$ l3 {3 J+ d2 a5 B command3
7 A L. o8 x' v% ~# N- T if [ condition ]0 q' u* i" r$ O$ N0 t6 \
command1
" m$ m. v# J/ X& R fi
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8 \1 S6 `) u' T& d, Y( ~( ?9 Y5 Z. ?#!/bin/bash
$ Q* H W; t0 [: Y2 f* ix=1/ r- T Q& Q' J$ b6 p0 x- }4 M
while [ $x -le 5 ]
8 |9 y3 h2 q, o0 X" i6 P9 [do8 y# Z/ j7 x) ?' _7 ]* ` u' Z* ]0 a
echo "Welcome $x times"
' j! ]* f# T2 d. S5 R7 X: V x=$(( $x + 1 ))
F+ e: i$ q4 r* {3 m# kdone1 V6 k1 V# T. U
3 p* W# _7 }; @2 v& Q; d
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# s9 H8 Z$ f3 E q; x8 _$ presult will be like this:
2 e. o/ l% Y5 U+ G4 p: w% E+ _7 T" m7 N
Welcome 1 times' _& m) X" ~) I2 ]
Welcome 2 times
3 N/ j2 G% m( a% xWelcome 3 times! V* l& Z- V4 H- K P8 A
Welcome 4 times
! Y. P) P# ~1 j4 I# \9 LWelcome 5 times+ Z+ ?% b- q0 U5 u9 o. ?# N" B
* ?7 A3 x2 S" I& d0 s
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发表于 2014-4-17 11:48:24
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