SHELL脚本读文件.doc

以下是sh文件内容*#！/bin/sh FILENAME=$1cat $FILENAME | while read LINE do echo $LINEdone*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=$1TIMEFILE=/tmp/loopfile.out$TIMEFILETHIS_SCRIPT=$（basename $0）#function usageecho /nUSAGE： $THIS_SCRIPT file_to_process/necho OR - To send the output to a file use： echo /n$THIS_SCRIPT file_to_process output_file_name 2&1 /nexit 1#function while_read_LINEcat $FILENAME | while read LINEdoecho $LINE：done#function while_read_LINE_bottomwhile read LINEdoecho $LINE：done $FILENAME#function while_line_LINE_bottomwhile line LINEdoecho $LINE：done $FILENAME#function cat_while_LINE_linecat $FILENAME | while LINE=linedoecho $LINE：done#function while_line_LINEcat $FILENAME | while line LINEdoecho $LINE：done#function while_LINE_line_bottomwhile LINE=linedoecho $LINE：done $FILENAME#function while_LINE_line_cmdsub2cat $FILENAME | while LINE=$（line）doecho $LINE：done#function while_LINE_line_bottom_cmdsub2while LINE=$（line）doecho $LINE：done $FILENAME#function while_read_LINE_FDexec 3&0exec 0 $FILENAMEwhile read LINEdoecho $LINE：doneexec 0&3#function while_LINE_line_FDexec 3&0exec 0 $FILENAMEwhile LINE=linedoecho $LINE：doneexec 0&3#function while_LINE_line_cmdsub2_FDexec 3&0exec 0 $FILENAMEwhile LINE=$（line）doprint $LINE：doneexec 0&3#function while_line_LINE_FDexec 3&0exec 0 $FILENAMEwhile line LINEdoecho $LINE：doneexec 0 $TIMEFILEecho function while_read_LINEtime while_read_LINE $TIMEFILEecho /nMethod 2：echo /nfunction while_read_LINE_bottom/n $TIMEFILEecho function while_read_LINE_bottomtime while_read_LINE_bottom $TIMEFILEecho /nMethod 3：echo /nfunction while_line_LINE_bottom/n $TIMEFILEecho function while_line_LINE_bottomtime while_line_LINE_bottom $TIMEFILEecho /nMethod 4：echo /nfunction cat_while_LINE_line/n $TIMEFILEecho function cat_while_LINE_linetime cat_while_LINE_line $TIMEFILEecho /nMethod 5：echo /nfunction while_line_LINE/n $TIMEFILEecho function while_line_LINEtime while_line_LINE $TIMEFILEecho /nMethod 6：echo /nfunction while_LINE_line_bottom/n $TIMEFILEecho function while_LINE_line_bottomtime while_LINE_line_bottom $TIMEFILEecho /nMethod 7：echo /nfunction while_LINE_line_cmdsub2/n $TIMEFILEecho function while_LINE_line_cmdsub2time while_LINE_line_cmdsub2 $TIMEFILEecho /nMethod 8：echo /nfunction while_LINE_line_bottom_cmdsub2/n $TIMEFILEecho function while_LINE_line_bottom_cmdsub2time while_LINE_line_bottom_cmdsub2 $TIMEFILEecho /nMethod 9：echo /nfunction while_read_LINE_FD/n $TIMEFILEecho function while_read_LINE_FDtime while_read_LINE_FD $TIMEFILEecho /nMethod 10：echo /nfunction while_LINE_line_FD/n $TIMEFILEecho function while_LINE_line_FDtime while_LINE_line_FD $TIMEFILEecho /nMethod 11：echo /nfunction while_LINE_line_cmdsub2_FD/n $TIMEFILEecho function while_LINE_line_cmdsub2_FDtime