我有一个文本文件,其中包含以下文本。
/* a comment line in a C program */
printf("It is /* NOT a comment line */\n");
x = 5; /* This is an assignment, not a comment line */
[TAB][SPACE] /* another empty comment line here */
/* another weird line, but not a comment line */ y = 0;
我希望删除以/*开头的行,以*/结尾的行仅使用linu
我正在尝试从linux终端备份数据库中的表。我正在使用下面的脚本来完成它,
GIT_MYSQL=/data/database/location to store
for T in `mysql -u [user] -h [Hostname] -p [database] -N -B -e 'show tables from database_name'`;
do
echo "Backing up $T"
mysqldump --skip-comments --compact -u [user] -p [password] [database] $T
我试图用bash脚本编写一个简单的Linux make命令。以下是我到目前为止所写的:
#!/usr/bin/env bash
function make_cmd()
{
read target colon sources
for src in $sources; do
if [ $src -nt $target ]; then
while read cmd && [[ $(echo "$cmd" | grep "$(printf '\t')"*) ]]; do
echo "e
我正在尝试在ansible playbook中执行命令docker-compose -f dev.yml build。但是得到了错误command 'gcc' failed with exit status 4。我已经在尝试安装python-dev和python3-dev库了。在攻略之外(来自shell)构建是成功的。
更多日志信息:
"Running setup.py install for psycopg2: started",
"
Running setup.py install for psycopg2: finished with statu
案文如下:
We will now present the Linux ls command
... here description of ls
We will now present the Linux cd command
... here description of cd
... more description
Done
下面的sed替换正则表达式应用于文本。
sed 's/.*Linux \(.*\) .*/\1:/' ex2.txt
,它提供以下输出
ls:
... here description of ls
cd:
...