使用GNU Parallel，你可以做到:

cat a.txt | parallel 'command1 {}; command2 {}; ...; '

出于安全原因，建议您使用包管理器 安装。但如果你做不到，你可以用这10秒 安装。

10秒安装会尝试做一个完整的安装;如果 失败了，个人安装;如果那失败了，一个最小值 安装。

$ (wget -O - pi.dk/3 || lynx -source pi.dk/3 || curl pi.dk/3/ || \
   fetch -o - http://pi.dk/3 ) > install.sh
$ sha1sum install.sh | grep 883c667e01eed62f975ad28b6d50e22a
12345678 883c667e 01eed62f 975ad28b 6d50e22a
$ md5sum install.sh | grep cc21b4c943fd03e93ae1ae49e28573c0
cc21b4c9 43fd03e9 3ae1ae49 e28573c0
$ sha512sum install.sh | grep da012ec113b49a54e705f86d51e784ebced224fdf
79945d9d 250b42a4 2067bb00 99da012e c113b49a 54e705f8 6d51e784 ebced224
fdff3f52 ca588d64 e75f6033 61bd543f d631f592 2f87ceb2 ab034149 6df84a35
$ bash install.sh

cat a.txt | xargs -d $'\n' sh -c 'for arg do command1 "$arg"; command2 "$arg"; ...; done' _

.．.或者，不用无用地使用cat:

<a.txt xargs -d $'\n' sh -c 'for arg do command1 "$arg"; command2 "$arg"; ...; done' _

来解释一些细节:

The use of "$arg" instead of % (and the absence of -I in the xargs command line) is for security reasons: Passing data on sh's command-line argument list instead of substituting it into code prevents content that data might contain (such as $(rm -rf ~), to take a particularly malicious example) from being executed as code. Similarly, the use of -d $'\n' is a GNU extension which causes xargs to treat each line of the input file as a separate data item. Either this or -0 (which expects NULs instead of newlines) is necessary to prevent xargs from trying to apply shell-like (but not quite shell-compatible) parsing to the stream it reads. (If you don't have GNU xargs, you can use tr '\n' '\0' <a.txt | xargs -0 ... to get line-oriented reading without -d). The _ is a placeholder for $0, such that other data values added by xargs become $1 and onward, which happens to be the default set of values a for loop iterates over.

我有一个解决这个问题的好办法。 只要写一个命令mcmd，就可以了

find . -type f | xargs -i mcmd echo {} @@ cat {} @pipe sed -n '1,3p'

mcmd的内容如下:

echo $* | sed -e 's/@@/\n/g' -e 's/@pipe/|/g' | csh

这是另一种没有xargs和cat的方法:

while read stuff; do
  command1 "$stuff"
  command2 "$stuff"
  ...
done < a.txt

我更喜欢允许试运行模式的样式(没有| sh):

cat a.txt | xargs -I % echo "command1; command2; ... " | sh

管道也适用:

cat a.txt | xargs -I % echo "echo % | cat " | sh

我做的一件事是添加到.bashrc/。配置此功能:

function each() {
    while read line; do
        for f in "$@"; do
            $f $line
        done
    done
}

然后你就可以做

... | each command1 command2 "command3 has spaces"

它比xargs或-exec更简洁。如果还需要这种行为，还可以修改该函数，将读取的值插入到每个命令中的任意位置。