SHELL脚本读文件

以下是 sh 文件内容 bin sh FILENAME 1 cat FILENAME while read LINE do echo LINE done 给你写了一个小例子 从一个文件读数据 设置环境变量 数据文件 data txt 包含三行 aaa bbb ccc test sh while read data do if data ccc then echo data export TTT data fi done output file name 2 1 The actaul timing data is sent to standard error file descriptor 2 and the function name header is sent to standard output file descriptor 1 set n Uncomment to check command syntax without any execution set x Uncomment to debug this script FILENAME 1 TIMEFILE tmp loopfile out TIMEFILE THIS SCRIPT basename 0 function usage echo nUSAGE THIS SCRIPT file to process n echo OR To send the output to a file use echo n THIS SCRIPT file to process output file name 2 1 n exit 1 function while read LINE cat FILENAME while read LINE do echo LINE done function while read LINE bottom while read LINE do echo LINE done FILENAME function while line LINE bottom while line LINE do echo LINE done FILENAME function cat while LINE line cat FILENAME while LINE line do echo LINE done function while line LINE cat FILENAME while line LINE do echo LINE done function while LINE line bottom while LINE line do echo LINE done FILENAME function while LINE line cmdsub2 cat FILENAME while LINE line do echo LINE done function while LINE line bottom cmdsub2 while LINE line do echo LINE done FILENAME function while read LINE FD exec 3 0 exec 0 FILENAME while read LINE do echo LINE done exec 0 3 function while LINE line FD exec 3 0 exec 0 FILENAME while LINE line do echo LINE done exec 0 3 function while LINE line cmdsub2 FD exec 3 0 exec 0 FILENAME while LINE line do print LINE done exec 0 3 function while line LINE FD exec 3 0 exec 0 FILENAME while line LINE do echo LINE done exec 0 TIMEFILE echo function while read LINE time while read LINE TIMEFILE echo nMethod 2 echo nfunction while read LINE bottom n TIMEFILE echo function while read LINE bottom time while read LINE bottom TIMEFILE echo nMethod 3 echo nfunction while line LINE bottom n TIMEFILE echo function while line LINE bottom time while line LINE bottom TIMEFILE echo nMethod 4 echo nfunction cat while LINE line n TIMEFILE echo function cat while LINE line time cat while LINE line TIMEFILE echo nMethod 5 echo nfunction while line LINE n TIMEFILE echo function while line LINE time while line LINE TIMEFILE echo nMethod 6 echo nfunction while LINE line bottom n TIMEFILE echo function while LINE line bottom time while LINE line bottom TIMEFILE echo nMethod 7 echo nfunction while LINE line cmdsub2 n TIMEFILE echo function while LINE line cmdsub2 time while LINE line cmdsub2 TIMEFILE echo nMethod 8 echo nfunction while LINE line bottom cmdsub2 n TIMEFILE echo function while LINE line bottom cmdsub2 time while LINE line bottom cmdsub2 TIMEFILE echo nMethod 9 echo nfunction while read LINE FD n TIMEFILE echo function while read LINE FD time while read LINE FD TIMEFILE echo nMethod 10 echo nfunction while LINE line FD n TIMEFILE echo function while LINE line FD time while LINE line FD TIMEFILE echo nMethod 11 echo nfunction while LINE line cmdsub2 FD n TIMEFILE echo function while LINE line cmdsub2 FD time