script 命令怎么在Linux中使用？針對這個問題，這篇文章詳細介紹了相對應(yīng)的分析和解答，希望可以幫助更多想解決這個問題的小伙伴找到更簡單易行的方法。
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1、script命令描述
script命令會記錄所有的操作到文件同時在屏幕上輸出，直到終止登陸的會話，或使用CRTL+D，或使用exit退出則停止記錄。
這個命令對于數(shù)據(jù)庫的升級或是重要設(shè)置的情形下使用可以用于后續(xù)查詢操作成功或失敗。
用法: $ script [upgrade.log]
如果未指定日志文件名的情形，自動生成日志文件名為typescript。
如果需要輸出到已經(jīng)存在的日志文件，則使用 -a 參數(shù)，再接已經(jīng)存在日志文件名。
如果需要在輸出到日志文件的同時，也可以查看日志文件的內(nèi)容，可以使用 -f 參數(shù)。
# script 幫助描述
robin@SZDB:~> man script
NAME
script - make typescript of terminal session
SYNOPSIS
script [-a] [-c COMMAND] [-f] [-q] [-t] [file]
DESCRIPTION
Script makes a typescript of everything printed on your terminal. It is useful for students who need a hardcopy record of
an interactive session as proof of an assignment, as the typescript file can be printed out later with lpr(1).
If the argument file is given, script saves all dialogue in file. If no file name is given, the typescript is saved in the
file typescript.
Options:
-a Append the output to file or typescript, retaining the prior contents.
-c COMMAND
Run the COMMAND rather than an interactive shell. This makes it easy for a script to capture the output of a pro-
gram that behaves differently when its stdout is not a tty.
-f Flush output after each write. This is nice for telecooperation: One person does `mkfifo foo; script -f foo' and
another can supervise real-time what is being done using `cat foo'.
-q Be quiet.
-t Output timeing data to standard error. This data contains two fields, separated by a space. The first field indi-
cates how much time elapsed since the previous output. The second field indicates how many characters were output
this time. This information can be used to replay typescripts with realistic typing and output delays.
2、script命令用法示例
代碼如下:
a、script命令后接日志文件名
robin@SZDB:~> script test_logfile.log #啟用script
Script started, file is test_logfile.log
.................#中間操作省略
robin@SZDB:~> exit #停止script
exit
Script done, file is test_logfile.log
#查看剛剛生成的日志文件
robin@SZDB:~> more test_logfile.log
Script started on Fri 26 Apr 2013 05:45:23 PM CST
robin@SZDB:~> sid
bash: sid: command not found
robin@SZDB:~> . ~/.bash_profile
robin@SZDB:~> sid
ORA_CRS_HOME=/opt/oracle/product/10gR2/crs
ORACLE_PATH=.:/users/robin/dba_scripts/custom/sql
ORA_ASM_HOME=/opt/oracle/product/10gR2/asm
ORACLE_SID=SYBO2SZ
ORACLE_BASE=/users/oracle
ORACLE_HOME=/users/oracle/OraHome10g
robin@SZDB:~> sql
SQL*Plus: Release 10.2.0.3.0 - Production on Fri Apr 26 17:46:12 2013
Copyright (c) 1982, 2006, Oracle. All Rights Reserved.
Error accessing PRODUCT_USER_PROFILE
Warning: Product user profile information not loaded!
You may need to run PUPBLD.SQL as SYSTEM
Connected to:
Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
goex_admin@SYBO2SZ> alter session set current_schema=scott;
Session altered.
goex_admin@SYBO2SZ> select * from dept;
DEPTNO DNAME LOC
---------- -------------- -------------
10 ACCOUNTING NEW YORK
20 RESEARCH DALLAS
30 SALES CHICAGO
40 OPERATIONS BOSTON
goex_admin@SYBO2SZ> exit
Disconnected from Oracle Database 10g Release 10.2.0.3.0 - 64bit Production
robin@SZDB:~> exit
exit
Script done on Fri 26 Apr 2013 05:46:32 PM CST
b、script 命下直接跟腳本名的示例
robin@SZDB:~> script -c retval.sh
Script started, file is typescript
7788 SCOTT ANALYST 7566 19870419 00:00:00 3100 20
Script done, file is typescript
#被執(zhí)行的shell腳本的內(nèi)容
# Author : Robinson
# Blog : http://blog.csdn.ner/robinson_0612
robin@SZDB:~> more ~/dba_scripts/custom/bin/retval.sh
#!/bin/bash
RETVAL=`sqlplus -silent scott/tiger <
SELECT * FROM emp WHERE ename='SCOTT';
EXIT;
EOF`
if [ -z "$RETVAL" ]; then
echo "No rows returned from database"
exit 0
else
echo $RETVAL
fi
關(guān)于script 命令怎么在Linux中使用問題的解答就分享到這里了，希望以上內(nèi)容可以對大家有一定的幫助，如果你還有很多疑惑沒有解開，可以關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道了解更多相關(guān)知識。
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