14.1 shell\u7f16\u7a0b\uff1a\u811a\u672c\u7f16\u7a0b\u57fa\u7840<\/p>\n\n\n\n
\u7f16\u8bd1\u5668\uff0c\u89e3\u91ca\u5668\uff1a\u5c06\u6c47\u7f16\u8bed\u8a00\u6216\u8005\u662f\u9ad8\u7ea7\u8bed\u8a00\u8f6c\u6362\u4e3a\u673a\u5668\u8bed\u8a00\u7684\u7ffb\u8bd1\u8bbe\u5907\u6216\u8f6f\u4ef6<\/p>\n\n\n\n
\u7f16\u7a0b\u8bed\u8a00\uff1a\u673a\u5668\u8bed\u8a00\u3001\u6c47\u7f16\u8bed\u8a00\u3001\u9ad8\u7ea7\u8bed\u8a00\uff08\u7b26\u5408\u4eba\u7c7b\u7684\u601d\u8003\u6a21\u5f0f\uff0c\u800c\u4e14\u80fd\u901a\u8fc7\u7f16\u8bd1\u5668\u8f6c\u6362\u4e3a\u673a\u5668\u8bed\u8a00\uff09<\/p>\n\n\n\n
14.1.1 \u7f16\u7a0b\u8bed\u8a00\u5206\u7c7b<\/p>\n\n\n\n
1\u3001\u9ad8\u7ea7\u8bed\u8a00\u5206\u7c7b<\/p>\n\n\n\n
\uff081\uff09\u9759\u6001\u8bed\u8a00\uff1a\u7f16\u8bd1\u578b\u8bed\u8a00<\/p>\n\n\n\n
\u5f3a\u7c7b\u578b(\u53d8\u91cf\u7c7b\u578b)<\/p>\n\n\n\n
\u4e8b\u5148\u8f6c\u6362\u6210\u53ef\u6267\u884c\u683c\u5f0f\uff08\u4e0d\u9700\u8981\u89e3\u91ca\u5668\u5c31\u80fd\u6267\u884c\uff09<\/p>\n\n\n\n
C\u3001C++\u3001JAVA\u3001C#<\/p>\n\n\n\n
\uff082\uff09\u52a8\u6001\u8bed\u8a00\uff1a\u89e3\u91ca\u578b\u8bed\u8a00\uff0c on the fly<\/p>\n\n\n\n
\u5f31\u7c7b\u578b\u8bed\u8a00<\/p>\n\n\n\n
\u8fb9\u89e3\u91ca\u8fb9\u6267\u884c\uff08\u5fc5\u987b\u8981\u89e3\u91ca\u5668\u624d\u80fd\u6b63\u5e38\u6267\u884c\uff09<\/p>\n\n\n\n
PHP\u3001SHELL\u3001python\u3001perl<\/p>\n\n\n\n
2\u3001\u6839\u636e\u6267\u884c\u60c5\u51b5\u5206\u7c7b<\/p>\n\n\n\n
\u9762\u5411\u8fc7\u7a0b\uff08\u7740\u773c\u70b9\u518d\u89e3\u51b3\u95ee\u9898\u672c\u8eab\uff09\uff1aShell, C<\/p>\n\n\n\n
\u9762\u5411\u5bf9\u8c61\uff08\u7740\u773c\u70b9\u5728\u4e8e\u4e00\u4e2a\u4e00\u4e2a\u7684\u5bf9\u8c61\uff09: JAVA, Python, perl, C++<\/p>\n\n\n\n
\u53d8\u91cf\uff1a\u5185\u5b58\u7a7a\u95f4\uff0c\u547d\u540d\uff0c\u53ef\u4ee5\u4e0d\u65ad\u5730\u66f4\u65b0\u5185\u5bb9<\/p>\n\n\n\n
\u5185\u5b58\uff1a\u7f16\u5740\u7684\u5b58\u50a8\u5355\u5143<\/p>\n\n\n\n
\u8fdb\u7a0b\uff1a\u5c06\u6570\u636e\u4e34\u65f6\u653e\u4e8e\u5185\u5b58\u5f53\u4e2d<\/p>\n\n\n\n
1+100\uff1a<\/p>\n\n\n\n
1+1000000<\/p>\n\n\n\n
1<\/p>\n\n\n\n
14.1.2 bash: <\/p>\n\n\n\n
1\u3001\u4fdd\u5b58\u7c7b\u578b\uff1a<\/p>\n\n\n\n
\uff081\uff09\u5b57\u7b26<\/p>\n\n\n\n
\uff082\uff09\u6570\u503c<\/p>\n\n\n\n
\uff08a\uff09\u6574\u578b<\/p>\n\n\n\n
\uff08b\uff09\u6d6e\u70b9\u578b: 11.23\uff0c 1.123*10^1, 0.1123*10^2<\/p>\n\n\n\n
2013\/10\/10, \u5b58\u4e3a\u5b57\u7b26\u4e32\u683c\u5f0f\u9700\u898164bit<\/p>\n\n\n\n
99999: \u5b58\u4e3a\u6570\u5b57\u683c\u5f0f\u9700\u898124bit, <\/p>\n\n\n\n
\uff083\uff09\u771f\u3001\u5047<\/p>\n\n\n\n
\u6574\u578b\uff0c8bit\uff0c\u4fdd\u5b58256\u7684\u8bdd\u4f1a\u53d1\u751f\u6ea2\u51fa\uff0c\u5bfc\u81f4\u90e8\u5206\u7a0b\u5e8f\u8fd0\u884c\u4e0d\u6b63\u5e38\uff0c\u79f0\u4e4b\u4e3a\u662f\u7f13\u51b2\u533a\u6ea2\u51fa<\/p>\n\n\n\n
\u903b\u8f91\u8fd0\u7b97<\/p>\n\n\n\n
\u903b\u8f91\uff1a1+1>2<\/p>\n\n\n\n
\u903b\u8f91\u8fd0\u7b97\uff1a\u4e0e\u3001\u6216\u3001\u975e\u3001\u5f02\u6216<\/p>\n\n\n\n
1: \u771f<\/p>\n\n\n\n
0: \u5047<\/p>\n\n\n\n
\u4e0e<\/p>\n\n\n\n
1 & 0 = 0<\/p>\n\n\n\n
0 & 1 = 0<\/p>\n\n\n\n
0 & 0 = 0<\/p>\n\n\n\n
1 & 1 = 1<\/p>\n\n\n\n
\u6216\uff1a<\/p>\n\n\n\n
\u975e\uff1a<\/p>\n\n\n\n
! \u771f = \u5047<\/p>\n\n\n\n
! \u5047 = \u771f<\/p>\n\n\n\n
\u5f02\u6216<\/p>\n\n\n\n
\u64cd\u4f5c\u6570\u76f8\u540c\u4e3a\u5047\uff0c\u4e0d\u540c\u5219\u4e3a\u771f<\/p>\n\n\n\n
14.2 \u53d8\u91cf\u53ca\u53d8\u91cf\u64cd\u4f5c<\/p>\n\n\n\n
shell: \u5f31\u7c7b\u578b\u7f16\u7a0b\u8bed\u8a00<\/p>\n\n\n\n
14.2.1 \u53d8\u91cf\u7c7b\u578b\uff1a<\/p>\n\n\n\n
\u5f3a\uff1a\u53d8\u91cf\u5728\u4f7f\u7528\u524d\uff0c\u5fc5\u987b\u4e8b\u5148\u58f0\u660e\uff0c\u751a\u81f3\u8fd8\u9700\u8981\u521d\u59cb\u5316\uff1b<\/p>\n\n\n\n
\u5f31\uff1a\u53d8\u91cf\u7528\u65f6\u58f0\u660e\uff0c\u751a\u81f3\u4e0d\u533a\u5206\u7c7b\u578b\uff1b\uff08\u4e00\u822c\u9ed8\u8ba4\u4e3a\u5b57\u7b26\u4e32\uff09<\/p>\n\n\n\n
\u53d8\u91cf\u7c7b\u578b\uff1a\u4e8b\u5148\u786e\u5b9a\u6570\u636e\u7684\u5b58\u50a8\u683c\u5f0f\u548c\u957f\u5ea6<\/p>\n\n\n\n
\u53d8\u91cf\u8d4b\u503c\uff1aVAR_NAME=VALUE<\/p>\n\n\n\n
1\u3001bash\u53d8\u91cf\u7c7b\u578b\uff1a<\/p>\n\n\n\n
\u73af\u5883\u53d8\u91cf\uff1a\u4f5c\u7528\u57df\u4e3a\u5f53\u524dshell\u8fdb\u7a0b\u53ca\u5176\u5b50\u8fdb\u7a0b\uff1b<\/p>\n\n\n\n
export VARNAME=VALUE<\/p>\n\n\n\n
VARNAME=VALUE<\/p>\n\n\n\n
export VARNAME<\/p>\n\n\n\n
\u201c\u5bfc\u51fa\u201d<\/p>\n\n\n\n
\u672c\u5730\u53d8\u91cf(\u5c40\u90e8\u53d8\u91cf)\uff1aset VARNAME=VALUE: \u4f5c\u7528\u57df\u4e3a\u6574\u4e2abash\u8fdb\u7a0b\uff1b\uff08set\u53ef\u7701\u7565\uff09<\/p>\n\n\n\n
\u5f15\u7528\u53d8\u91cf\uff1a${VARNAME} (\u4f1a\u9020\u6210\u6df7\u6dc6\u65f6\u4f7f\u7528{})\uff0c{}\u6709\u65f6\u53ef\u7701\u7565<\/p>\n\n\n\n
\u5c40\u90e8\u53d8\u91cf\uff1alocal VARNAME=VALUE\uff1a\u4f5c\u7528\u57df\u4e3a\u5f53\u524d\u4ee3\u7801\u6bb5\uff1b<\/p>\n\n\n\n
\u4f4d\u7f6e\u53d8\u91cf\uff1a$1, $2, …<\/p>\n\n\n\n
\u7279\u6b8a\u53d8\u91cf\uff08\u7cfb\u7edf\u53d8\u91cf\uff09\uff1a\u7528\u4e8e\u4fdd\u5b58\u4e00\u4e9b\u7279\u6b8a\u6570\u636e<\/p>\n\n\n\n
$?: \u4e0a\u4e00\u4e2a\u547d\u4ee4\u7684\u6267\u884c\u72b6\u6001\u8fd4\u56de\u503c\uff1b<\/p>\n\n\n\n
\u7a0b\u5e8f\u6267\u884c\uff0c\u53ef\u80fd\u6709\u4e24\u7c7b\u8fd4\u56de\u503c\uff1a<\/p>\n\n\n\n
\uff081\uff09\u7a0b\u5e8f\u6267\u884c\u7ed3\u679c<\/p>\n\n\n\n
\uff082\uff09\u7a0b\u5e8f\u72b6\u6001\u8fd4\u56de\u4ee3\u7801\uff080-255\uff09<\/p>\n\n\n\n
0: \u6b63\u786e\u6267\u884c<\/p>\n\n\n\n
1-255\uff1a\u9519\u8bef\u6267\u884c\uff0c1\uff0c2\uff0c127\u7cfb\u7edf\u9884\u7559\uff1b\u5176\u4ed6\u7684\u8fd4\u56de\u503c\u53ef\u4ee5\u81ea\u5df1\u5b9a\u4e49<\/p>\n\n\n\n
[root@Daniel-R480 ~]# clear<\/p>\n\n\n\n
[root@Daniel-R480 ~]# echo $?<\/p>\n\n\n\n
0<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ll<\/p>\n\n\n\n
total 16<\/p>\n\n\n\n
-rw——- 1 root root 6921 Jan 29 2019 anaconda-ks.cfg<\/p>\n\n\n\n
-rw-r–r– 1 root root 0 Jun 7 10:55 cut<\/p>\n\n\n\n
-rw-r–r– 1 root root 0 Jun 7 09:47 hellosa<\/p>\n\n\n\n
-rwx—— 1 apache root 513 Jun 4 11:52 inittab<\/p>\n\n\n\n
-rw——- 1 root root 6577 Jan 29 2019 original-ks.cfg<\/p>\n\n\n\n
-rw-r–r– 1 root root 15 Jun 7 10:53 passwd.txt<\/p>\n\n\n\n
-rw-r–r– 1 root root 91 Jun 7 13:43 test2.txt<\/p>\n\n\n\n
-rw-r–r– 1 root root 12 Jun 7 14:43 test3.txt<\/p>\n\n\n\n
-rw-r–r– 1 root root 46 Jun 7 11:49 test.txt<\/p>\n\n\n\n
[root@Daniel-R480 ~]# echo $?<\/p>\n\n\n\n
0<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ld<\/p>\n\n\n\n
ld: no input files<\/p>\n\n\n\n
[root@Daniel-R480 ~]# echo $?<\/p>\n\n\n\n
1<\/p>\n\n\n\n
[root@Daniel-R480 ~]#<\/p>\n\n\n\n
[root@Daniel-R480 ~]# id student &> \/dev\/null<\/p>\n\n\n\n
[root@Daniel-R480 ~]# echo $?<\/p>\n\n\n\n
1<\/p>\n\n\n\n
dev\/null: \u8f6f\u4ef6\u8bbe\u5907\uff08\u6a21\u62df\u7684\u4e0d\u5b58\u5728\u7684\u8bbe\u5907\uff09\uff0c bit bucket\uff0c\u6570\u636e\u9ed1\u6d1e\uff08\u4f1a\u541e\u6389\u6240\u6709\u63a5\u53d7\u5230\u7684\u6570\u636e\uff09 <\/p>\n\n\n\n
echo $?\uff0c\u53ef\u7528\u6765\u5224\u65ad\u7528\u6237\u662f\u5426\u5b58\u5728<\/p>\n\n\n\n
\u8f93\u51fa\u91cd\u5b9a\u5411\uff1a<\/p>\n\n\n\n
>\uff0c>>\uff0c2>\uff0c2>>\uff0c&><\/p>\n\n\n\n
\u64a4\u6d88\u53d8\u91cf\uff1a<\/p>\n\n\n\n
unset VARNAME<\/p>\n\n\n\n
\u67e5\u770b\u5f53shell\u4e2d\u53d8\u91cf\uff1a<\/p>\n\n\n\n
set<\/p>\n\n\n\n
\u67e5\u770b\u5f53\u524dshell\u4e2d\u7684\u73af\u5883\u53d8\u91cf\uff1a<\/p>\n\n\n\n
printenv<\/p>\n\n\n\n
env<\/p>\n\n\n\n
export<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ANIMALS=PIG<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ANIMALS=$ANIMALS:GOAT<\/p>\n\n\n\n
[root@Daniel-R480 ~]# echo $ANIMALS<\/p>\n\n\n\n
PIG:GOAT<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ANIMALS=$ANIMALS:SHEEP<\/p>\n\n\n\n
[root@Daniel-R480 ~]# echo $ANIMALS<\/p>\n\n\n\n
PIG:GOAT:SHEEP<\/p>\n\n\n\n
shell\u9ed8\u8ba4\u4e0d\u8fdb\u884c\u6570\u636e\u7684\u8fd0\u7b97<\/p>\n\n\n\n
14.3 BASH\u811a\u672c<\/p>\n\n\n\n
\u811a\u672c\uff1a\u547d\u4ee4\u7684\u5806\u780c\uff0c\u6309\u5b9e\u9645\u9700\u8981\uff0c\u7ed3\u5408\u547d\u4ee4\u6d41\u7a0b\u63a7\u5236\u673a\u5236\u5b9e\u73b0\u7684\u6e90\u7a0b\u5e8f<\/p>\n\n\n\n
1\u3001shebang: \u9b54\u6570\uff08\u6bcf\u4e2a\u811a\u672c\u7684\u7b2c\u4e00\u884c\uff09<\/p>\n\n\n\n
#!\/bin\/bash\uff08#\uff01+\u811a\u672c\u7684\u89e3\u91ca\u8def\u5f84\uff09<\/p>\n\n\n\n
# \u6ce8\u91ca\u884c\uff0c\u4e0d\u6267\u884c\uff08\u6b63\u6587\u91cc\u9762\u7684#\u4f5c\u7528\uff09<\/p>\n\n\n\n
[root@Daniel-R480 ~]# vim first.sh<\/p>\n\n\n\n
[root@Daniel-R480 ~]#<\/p>\n\n\n\n
[root@Daniel-R480 ~]# file \/bin\/ls<\/p>\n\n\n\n
\/bin\/ls: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU\/Linux 2.6.32, BuildID[sha1]=ceaf496f3aec08afced234f4f36330d3d13a657b, stripped<\/p>\n\n\n\n
[root@Daniel-R480 ~]# file first.sh<\/p>\n\n\n\n
first.sh: ASCII text<\/p>\n\n\n\n
[root@Daniel-R480 ~]# vim first.sh<\/p>\n\n\n\n
[root@Daniel-R480 ~]# file first.sh<\/p>\n\n\n\n
first.sh: Bourne-Again shell script, ASCII text executable<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ll first.sh<\/p>\n\n\n\n
-rw-r–r– 1 root root 35 Jun 7 17:44 first.sh<\/p>\n\n\n\n
[root@Daniel-R480 ~]# chmod +x first.sh<\/p>\n\n\n\n
[root@Daniel-R480 ~]# .\/first.sh<\/p>\n\n\n\n
#<\/p>\n\n\n\n
# \/etc\/fstab<\/p>\n\n\n\n
# Created by anaconda on Mon Jan 28 20:51:49 2019<\/p>\n\n\n\n
#<\/p>\n\n\n\n
# Accessible filesystems, by reference, are maintained under ‘\/dev\/disk’<\/p>\n\n\n\n
# See man pages fstab(5), findfs(8), mount(8) and\/or blkid(8) for more info<\/p>\n\n\n\n
#<\/p>\n\n\n\n
UUID=f41e390f-835b-4223-a9bb-9b45984ddf8d \/ xfs defaults 0 0<\/p>\n\n\n\n
adm crash empty gopher lib lock mail opt run tmp yp<\/p>\n\n\n\n
cache db games kerberos local log nis preserve spool var.out<\/p>\n\n\n\n
[root@Daniel-R480 ~]#<\/p>\n\n\n\n
[root@Daniel-R480 ~]# chmod -x first.sh<\/p>\n\n\n\n
[root@Daniel-R480 ~]# ll<\/p>\n\n\n\n
total 16<\/p>\n\n\n\n
-rw——- 1 root root 6921 Jan 29 2019 anaconda-ks.cfg<\/p>\n\n\n\n
-rw-r–r– 1 root root 0 Jun 7 10:55 cut<\/p>\n\n\n\n
-rw-r–r– 1 root root 35 Jun 7 17:44 first.sh<\/p>\n\n\n\n
-rw-r–r– 1 root root 0 Jun 7 09:47 hellosa<\/p>\n\n\n\n
-rwx—— 1 apache root 513 Jun 4 11:52 inittab<\/p>\n\n\n\n
-rw——- 1 root root 6577 Jan 29 2019 original-ks.cfg<\/p>\n\n\n\n
-rw-r–r– 1 root root 15 Jun 7 10:53 passwd.txt<\/p>\n\n\n\n
-rw-r–r– 1 root root 91 Jun 7 13:43 test2.txt<\/p>\n\n\n\n
-rw-r–r– 1 root root 12 Jun 7 14:43 test3.txt<\/p>\n\n\n\n
-rw-r–r– 1 root root 46 Jun 7 11:49 test.txt<\/p>\n\n\n\n
[root@Daniel-R480 ~]# bash first.sh<\/p>\n\n\n\n
#<\/p>\n\n\n\n
# \/etc\/fstab<\/p>\n\n\n\n
# Created by anaconda on Mon Jan 28 20:51:49 2019<\/p>\n\n\n\n
#<\/p>\n\n\n\n
# Accessible filesystems, by reference, are maintained under ‘\/dev\/disk’<\/p>\n\n\n\n
# See man pages fstab(5), findfs(8), mount(8) and\/or blkid(8) for more info<\/p>\n\n\n\n
#<\/p>\n\n\n\n
UUID=f41e390f-835b-4223-a9bb-9b45984ddf8d \/ xfs defaults 0 0<\/p>\n\n\n\n
adm crash empty gopher lib lock mail opt run tmp yp<\/p>\n\n\n\n
cache db games kerberos local log nis preserve spool var.out<\/p>\n\n\n\n
[root@Daniel-R480 ~]#<\/p>\n\n\n\n
2\u3001\u811a\u672c\u548c\u73af\u5883\u5173\u7cfb<\/p>\n\n\n\n
\u811a\u672c\u5728\u6267\u884c\u65f6\u4f1a\u542f\u52a8\u4e00\u4e2a\u5b50shell\u8fdb\u7a0b\uff1b<\/p>\n\n\n\n
\u547d\u4ee4\u884c\u4e2d\u542f\u52a8\u7684\u811a\u672c\u4f1a\u7ee7\u627f\u5f53\u524dshell\u73af\u5883\u53d8\u91cf\uff1b<\/p>\n\n\n\n
\u7cfb\u7edf\u81ea\u52a8\u6267\u884c\u7684\u811a\u672c(\u975e\u547d\u4ee4\u884c\u542f\u52a8)\u5c31\u9700\u8981\u81ea\u6211\u5b9a\u4e49\u9700\u8981\u5404\u73af\u5883\u53d8\u91cf\uff1b<\/p>\n\n\n\n
\u7ec3\u4e60\uff1a<\/p>\n\n\n\n
\u5199\u4e00\u4e2a\u811a\u672c\uff0c\u5b8c\u6210\u4ee5\u4e0b\u4efb\u52a1<\/p>\n\n\n\n
1\u3001\u6dfb\u52a05\u4e2a\u7528\u6237, user1,…, user5<\/p>\n\n\n\n
2\u3001\u6bcf\u4e2a\u7528\u6237\u7684\u5bc6\u7801\u540c\u7528\u6237\u540d\uff0c\u800c\u4e14\u8981\u6c42\uff0c\u6dfb\u52a0\u5bc6\u7801\u5b8c\u6210\u540e\u4e0d\u663e\u793apasswd\u547d\u4ee4\u7684\u6267\u884c\u7ed3\u679c\u4fe1\u606f\uff1b<\/p>\n\n\n\n
3\u3001\u6bcf\u4e2a\u7528\u6237\u6dfb\u52a0\u5b8c\u6210\u540e\uff0c\u90fd\u8981\u663e\u793a\u7528\u6237\u67d0\u67d0\u5df2\u7ecf\u6210\u529f\u6dfb\u52a0\uff1b<\/p>\n\n\n\n
#!\/bin\/bash<\/p>\n\n\n\n
#<\/p>\n\n\n\n
useradd user1<\/p>\n\n\n\n
echo !$ | passwd –stdin &>\/dev\/null<\/p>\n\n\n\n
echo “Add user1 successfully!”<\/p>\n\n\n\n
useradd user2<\/p>\n\n\n\n
echo !$ | passwd –stdin &>\/dev\/null<\/p>\n\n\n\n
echo “Add user2 successfully!”<\/p>\n\n\n\n
useradd user3<\/p>\n\n\n\n
echo !$ | passwd –stdin &>\/dev\/null<\/p>\n\n\n\n
echo “Add user3 successfully!”<\/p>\n\n\n\n
useradd user4<\/p>\n\n\n\n
echo !$ | passwd –stdin &>\/dev\/null<\/p>\n\n\n\n
echo “Add user4 successfully!”<\/p>\n\n\n\n
useradd user5<\/p>\n\n\n\n
echo !$ | passwd –stdin &>\/dev\/null<\/p>\n\n\n\n
echo “Add user5 successfully!”<\/p>\n\n\n\n
[root@Daniel-R480 ~]# .\/aduser.sh<\/p>\n\n\n\n
Add user1 successfully!<\/p>\n\n\n\n
Add user2 successfully!<\/p>\n\n\n\n
Add user3 successfully!<\/p>\n\n\n\n
Add user4 successfully!<\/p>\n\n\n\n
Add user5 successfully!<\/p>\n\n\n\n
[root@Daniel-R480 ~]# tail -5 \/etc\/passwd<\/p>\n\n\n\n
user1:x:4008:4008::\/home\/user1:\/bin\/bash<\/p>\n\n\n\n
user2:x:4009:4009::\/home\/user2:\/bin\/bash<\/p>\n\n\n\n
user3:x:4010:4010::\/home\/user3:\/bin\/bash<\/p>\n\n\n\n
user4:x:4011:4011::\/home\/user4:\/bin\/bash<\/p>\n\n\n\n
user5:x:4012:4012::\/home\/user5:\/bin\/bash<\/p>\n\n\n\n
[root@Daniel-R480 ~]#<\/p>\n","protected":false},"excerpt":{"rendered":"
14.1 shell\u7f16\u7a0b\uff1a\u811a\u672c\u7f16\u7a0b\u57fa\u7840 \u7f16\u8bd1\u5668\uff0c\u89e3\u91ca […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-489","post","type-post","status-publish","format-standard","hentry","category-linux"],"aioseo_notices":[],"views":60,"_links":{"self":[{"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=\/wp\/v2\/posts\/489","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=489"}],"version-history":[{"count":1,"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=\/wp\/v2\/posts\/489\/revisions"}],"predecessor-version":[{"id":490,"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=\/wp\/v2\/posts\/489\/revisions\/490"}],"wp:attachment":[{"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=489"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=489"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.oceansource.cc\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=489"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}