我想将流程的标准输出和标准错误重定向到单个文件。我在巴什怎么做?
当前回答
除了费南多·法布雷蒂所做的,我稍微改变了一下功能,去掉了&关闭,这对我来说很有用。
function saveStandardOutputs {
if [ "$OUTPUTS_REDIRECTED" == "false" ]; then
exec 3>&1
exec 4>&2
trap restoreStandardOutputs EXIT
else
echo "[ERROR]: ${FUNCNAME[0]}: Cannot save standard outputs because they have been redirected before"
exit 1;
fi
}
# Parameters: $1 => logfile to write to
function redirectOutputsToLogfile {
if [ "$OUTPUTS_REDIRECTED" == "false" ]; then
LOGFILE=$1
if [ -z "$LOGFILE" ]; then
echo "[ERROR]: ${FUNCNAME[0]}: logfile empty [$LOGFILE]"
fi
if [ ! -f $LOGFILE ]; then
touch $LOGFILE
fi
if [ ! -f $LOGFILE ]; then
echo "[ERROR]: ${FUNCNAME[0]}: creating logfile [$LOGFILE]"
exit 1
fi
saveStandardOutputs
exec 1>>${LOGFILE}
exec 2>&1
OUTPUTS_REDIRECTED="true"
else
echo "[ERROR]: ${FUNCNAME[0]}: Cannot redirect standard outputs because they have been redirected before"
exit 1;
fi
}
function restoreStandardOutputs {
if [ "$OUTPUTS_REDIRECTED" == "true" ]; then
exec 1>&3 #restore stdout
exec 2>&4 #restore stderr
OUTPUTS_REDIRECTED="false"
fi
}
LOGFILE_NAME="tmp/one.log"
OUTPUTS_REDIRECTED="false"
echo "this goes to standard output"
redirectOutputsToLogfile $LOGFILE_NAME
echo "this goes to logfile"
echo "${LOGFILE_NAME}"
restoreStandardOutputs
echo "After restore this goes to standard output"
其他回答
看看这里。应该是:
yourcommand &> filename
它将标准输出和标准错误重定向到文件名。
在考虑使用exec2>&1之类的情况下,如果可能的话,我发现使用如下Bash函数重写代码更容易阅读:
function myfunc(){
[...]
}
myfunc &>mylog.log
除了费南多·法布雷蒂所做的,我稍微改变了一下功能,去掉了&关闭,这对我来说很有用。
function saveStandardOutputs {
if [ "$OUTPUTS_REDIRECTED" == "false" ]; then
exec 3>&1
exec 4>&2
trap restoreStandardOutputs EXIT
else
echo "[ERROR]: ${FUNCNAME[0]}: Cannot save standard outputs because they have been redirected before"
exit 1;
fi
}
# Parameters: $1 => logfile to write to
function redirectOutputsToLogfile {
if [ "$OUTPUTS_REDIRECTED" == "false" ]; then
LOGFILE=$1
if [ -z "$LOGFILE" ]; then
echo "[ERROR]: ${FUNCNAME[0]}: logfile empty [$LOGFILE]"
fi
if [ ! -f $LOGFILE ]; then
touch $LOGFILE
fi
if [ ! -f $LOGFILE ]; then
echo "[ERROR]: ${FUNCNAME[0]}: creating logfile [$LOGFILE]"
exit 1
fi
saveStandardOutputs
exec 1>>${LOGFILE}
exec 2>&1
OUTPUTS_REDIRECTED="true"
else
echo "[ERROR]: ${FUNCNAME[0]}: Cannot redirect standard outputs because they have been redirected before"
exit 1;
fi
}
function restoreStandardOutputs {
if [ "$OUTPUTS_REDIRECTED" == "true" ]; then
exec 1>&3 #restore stdout
exec 2>&4 #restore stderr
OUTPUTS_REDIRECTED="false"
fi
}
LOGFILE_NAME="tmp/one.log"
OUTPUTS_REDIRECTED="false"
echo "this goes to standard output"
redirectOutputsToLogfile $LOGFILE_NAME
echo "this goes to logfile"
echo "${LOGFILE_NAME}"
restoreStandardOutputs
echo "After restore this goes to standard output"
对于tcsh,我必须使用以下命令:
command >& file
如果使用命令&>文件,它将给出“无效空命令”错误。
我想要一个解决方案,将stdout和stderr的输出写入日志文件,并且stderr仍在控制台上。所以我需要通过tee复制stderr输出。
这是我找到的解决方案:
command 3>&1 1>&2 2>&3 1>>logfile | tee -a logfile
第一次交换stderr和stdout然后将stdout附加到日志文件将stderr管道到tee,并将其附加到日志文件中